1
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Suzuki H, Moro R, Matsuda T. Palladium-Catalyzed anti-Michael-Type (Hetero)arylation of Acrylamides. J Am Chem Soc 2024; 146:13697-13702. [PMID: 38742920 DOI: 10.1021/jacs.4c00841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
This paper reports a direct α-(hetero)arylation of acrylamides through an inverse electron-demand nucleophilic addition, specifically an anti-Michael-type addition. The introduction of a quinolyl directing group facilitates the nucleophilic addition of (hetero)arenes to the α-position of acrylamides. The quinolyl directing group effectively suppresses undesired β-hydrogen elimination and is removable for subsequent derivatization. The presented method provides an atom economical synthesis of α-(hetero)arylamide with a high degree of functional group tolerance.
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Affiliation(s)
- Hirotsugu Suzuki
- Tenure-Track Program for Innovative Research, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Ryota Moro
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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2
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Zeng L, Xu CH, Zou XY, Sun Q, Hu M, Ouyang XH, He DL, Li JH. Iodoarene-directed photoredox β-C(sp 3)-H arylation of 1-( o-iodoaryl)alkan-1-ones with cyanoarenes via halogen atom transfer and hydrogen atom transfer. Chem Sci 2024; 15:6522-6529. [PMID: 38699280 PMCID: PMC11062093 DOI: 10.1039/d3sc06637a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 03/25/2024] [Indexed: 05/05/2024] Open
Abstract
Site selective functionalization of inert remote C(sp3)-H bonds to increase molecular complexity offers vital potential for chemical synthesis and new drug development, thus it has been attracting ongoing research interest. In particular, typical β-C(sp3)-H arylation methods using chelation-assisted metal catalysis or metal-catalyzed oxidative/photochemical in situ generated allyl C(sp3)-H bond processes have been well developed. However, radical-mediated direct β-C(sp3)-H arylation of carbonyls remains elusive. Herein, we describe an iodoarene-directed photoredox β-C(sp3)-H arylation of 1-(o-iodoaryl)alkan-1-ones with cyanoarenes via halogen atom transfer (XAT) and hydrogen atom transfer (HAT). The method involves diethylaminoethyl radical-mediated generation of an aryl radical intermediate via XAT, then directed 1,5-HAT to form the remote alkyl radical intermediate and radical-radical coupling with cyanoarenes, and is applicable to a broad scope of unactivated remote C(sp3)-H bonds like β-C(sp3)-H bonds of o-iodoaryl-substituted alkanones and α-C(sp3)-H bonds of o-iodoarylamides. Experimental findings are supported by computational studies (DFT calculations), revealing that this method operates via a radical-relay stepwise mechanism involving multiple SET, XAT, 1,5-HAT and radical-radical coupling processes.
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Affiliation(s)
- Liang Zeng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Chong-Hui Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha 410082 China
| | - Xiu-Yuan Zou
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Ming Hu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha 410082 China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang 330063 China
| | - De-Liang He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha 410082 China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha 410082 China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology Qingdao 266042 China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 China
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 475004 China
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3
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Hossain MM, Shaikh AC, Kaur R, Gianetti TL. Red Light-Blue Light Chromoselective C(sp 2)-X Bond Activation by Organic Helicenium-Based Photocatalysis. J Am Chem Soc 2024; 146:7922-7930. [PMID: 38498938 DOI: 10.1021/jacs.3c13380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Chromoselective bond activation has been achieved in organic helicenium (nPr-DMQA+)-based photoredox catalysis. Consequently, control over chromoselective C(sp2)-X bond activation in multihalogenated aromatics has been demonstrated. nPr-DMQA+ can only initiate the halogen atom transfer (XAT) pathway under red light irradiation to activate low-energy-accessible C(sp2)-I bonds. In contrast, blue light irradiation initiates consecutive photoinduced electron transfer (conPET) to activate more challenging C(sp2)-Br bonds. Comparative reaction outcomes have been demonstrated in the α-arylation of cyclic ketones with red and blue lights. Furthermore, red-light-mediated selective C(sp2)-I bonds have been activated in iodobromoarenes to keep the bromo functional handle untouched. Finally, the strength of the chromoselective catalysis has been highlighted with two-fold functionalization using both photo-to-transition metal and photo-to-photocatalyzed transformations.
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Affiliation(s)
- Md Mubarak Hossain
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
| | - Aslam C Shaikh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Ramandeep Kaur
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
| | - Thomas L Gianetti
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
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4
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Liang P, Yang H, Wang Y. Elucidating the mechanism and origin of stereoselectivity in the activation/transformation of an acetic ester catalyzed by an N-heterocyclic carbene. Phys Chem Chem Phys 2024; 26:4320-4328. [PMID: 38234281 DOI: 10.1039/d3cp05581g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The activation of an ester by N-heterocyclic carbene (NHC) organocatalysis is an efficient and important approach for generating an NHC-bound enolate intermediate, an important active intermediate in the transformation of carbonyl compounds. Herein, we perform a theoretical study on the NHC-catalyzed activation and transformation reaction of an acetic ester in which the NHC-bound enolate intermediate is a key intermediate. Multiple activation and transformation pathways are proposed and analyzed to identify an energetically favorable pathway. The use of different substrates for the reaction is considered. When a chalcone substrate is used, [4+2] cycloaddition between the enolate intermediate and the chalcone is identified to be both the rate- and stereoselectivity-determining step for the reaction, with the R-configured product being generated as the major isomer. Noncovalent interaction (NCI) and atoms-in-molecules (AIM) analyses are performed to identify the origin of the stereoselectivity of the reaction, and a local reactivity analysis is conducted to explore substrate and catalyst effects on the reaction.
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Affiliation(s)
- Pingxin Liang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou, Henan Province, 450001, P. R. China.
| | - Haoran Yang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou, Henan Province, 450001, P. R. China.
| | - Yang Wang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou, Henan Province, 450001, P. R. China.
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5
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Lu M, Chen K, Wu T, Cai H. Electrochemical Decarboxylative Alkoxy-alkoxycarbonylation of Alkenes. Org Lett 2024; 26:188-192. [PMID: 38127651 DOI: 10.1021/acs.orglett.3c03816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A method is presented for decarboxylative alkoxy-alkoxycarbonylation of various alkenes with alcohols by electrochemical anodic oxidation of monopotassium ethyloxalate salts with good functional group compatibility. The reaction involves anodic oxidation to form an acyl radical, followed by addition to an olefin to yield a new alkyl radical, which is anodically oxidized to a carbon cation and captured by alcohols to afford β-alkoxyalkanoates. Adding catalytic amounts of ammonium iodide enhanced the efficiency of the reactions.
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Affiliation(s)
- Meiqun Lu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Kailun Chen
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Tao Wu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Hu Cai
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
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6
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Binayeva M, Ma X, Ghaemimohammadi P, Biscoe MR. A general approach to stereospecific Pd-catalyzed cross-coupling reactions of benzylic stereocenters. Chem Sci 2023; 14:14124-14130. [PMID: 38098708 PMCID: PMC10717501 DOI: 10.1039/d3sc04519f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 11/15/2023] [Indexed: 12/17/2023] Open
Abstract
We have developed a general process for the formation of enantioenriched benzylic stereocenters via stereospecific Pd-catalyzed cross-coupling reactions of enantioenriched benzylic tricyclohexyltin nucleophiles. This process proceeds with excellent stereospecificity for a remarkably broad scope of electrophilic coupling partners including aryl and heteroaryl halides and triflates, acid chlorides, thioesters, chloroformates, and carbamoyl chlorides. Thus, enantioenriched 1,1-diarylalkanes as well as formal products of asymmetric enolate arylation are readily accessed using this approach. We additionally provide the first demonstration of a Sn-selective cross-coupling reaction using a vicinal alkylborylstannane nucleophile. In these reactions, the presence of cyclohexyl spectator ligands on tin is essential to ensure selective transfer of the secondary benzylic unit from tin to palladium.
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Affiliation(s)
- Meruyert Binayeva
- Department of Chemistry and Biochemistry, The City College of New York (CCNY) New York NY 10031 USA
- The Graduate Center of the City University of New York (CUNY) 365 Fifth Avenue New York NY 10016 USA
| | - Xinghua Ma
- Department of Chemistry and Biochemistry, The City College of New York (CCNY) New York NY 10031 USA
- The Graduate Center of the City University of New York (CUNY) 365 Fifth Avenue New York NY 10016 USA
| | - Pejman Ghaemimohammadi
- Department of Chemistry and Biochemistry, The City College of New York (CCNY) New York NY 10031 USA
- The Graduate Center of the City University of New York (CUNY) 365 Fifth Avenue New York NY 10016 USA
| | - Mark R Biscoe
- Department of Chemistry and Biochemistry, The City College of New York (CCNY) New York NY 10031 USA
- The Graduate Center of the City University of New York (CUNY) 365 Fifth Avenue New York NY 10016 USA
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7
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Pan G, Pu M, Wang H, Ying M, Li Y, Dong S, Feng X, Liu X. Catalytic Enantioselective Nucleophilic Addition to Arynes by a New Quaternary Guanidinium Salt-Based Phase-Transfer Catalyst. J Am Chem Soc 2023; 145:26318-26327. [PMID: 37962558 DOI: 10.1021/jacs.3c09594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Owing to the mild generation methods, arynes have been widely used in synthetic chemistry. However, achieving asymmetric organocatalytic reactions with arynes remains a formidable and infrequent challenge, primarily because these neutral and transient species tend to spontaneously quench. To address this issue, a solid-liquid phase-transfer strategy is devised in which the generation speed of arynes could be controlled by the in situ generated fluoride-based chiral phase-transfer catalyst. In this study, we present a catalytic enantioselective nucleophilic addition reaction involving arynes, utilizing an amino amide-based guanidinium salt QG•X. Furthermore, we demonstrate the broad compatibility of this reaction with various arynes and cyclic/acyclic β-keto amides, leading to the creation of diverse α-aryl quaternary stereocenters with good stereoselectivity. Mechanistic investigations have uncovered the potential involvement of a chiral intramolecular cationic-anionic pair and HF during the ion exchange between QG•X and CsF for nucleophile activation and aryne generation. Additionally, DFT calculations suggested that the observed high levels of enantioselectivity can be attributed to steric repulsion and the cumulative noncovalent interactions between the catalysts and substrates.
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Affiliation(s)
- Guihua Pan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Maoping Pu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongyu Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Meijia Ying
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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8
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Zhou X, Huang Q, Guo J, Dai L, Lu Y. Enantioselective De Novo Synthesis of α,α-Diaryl Ketones from Alkynes. Angew Chem Int Ed Engl 2023; 62:e202310078. [PMID: 37724448 DOI: 10.1002/anie.202310078] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/20/2023]
Abstract
Chiral α,α-diaryl ketones are structural motifs commonly present in bioactive molecules, and they are also valuable building blocks in synthetic organic chemistry. However, catalytic asymmetric synthesis of α,α-diaryl ketones bearing a tertiary stereogenic center remains largely unsolved. Herein, we report a catalytic de novo enantioselective synthesis of α,α-diaryl ketones from simple alkynes via chiral phosphoric acid (CPA) catalysis. A broad range of enolizable α,α-diaryl ketones are prepared in good yields and with excellent enantioselectivities. The described protocol also serves as an efficient deuteration method for the preparation of enantiomerically enriched deuterated α,α-diaryl ketones. Using the methodology reported, bioactive molecules, including one of the best-selling anti-breast cancer drugs, tamoxifen, are readily synthesized.
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Affiliation(s)
- Xueting Zhou
- Joint School of National University of Singapore, Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Qingqin Huang
- Joint School of National University of Singapore, Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Jiami Guo
- Joint School of National University of Singapore, Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Lei Dai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Yixin Lu
- Joint School of National University of Singapore, Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
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9
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Xu CH, Zeng L, Lv GF, Qin JH, Xu XH, Li JH. Palladium-Catalyzed β-C(sp 3)-H Arylation of Silyl Prop-1-en-1-ol Ethers with Aryl Halides: Entry to α,β-Unsaturated Ketones. Org Lett 2023; 25:7645-7649. [PMID: 37843412 DOI: 10.1021/acs.orglett.3c02961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
A palladium(0)-catalyzed β-C(sp3)-H arylation of silyl prop-1-en-1-ol ethers with aryl halides for the synthesis of α,β-unsaturated ketones is presented. In contrast to the reported β-C(sp3)-H arylation of ketones, the chemoselectivity of this current method relies on the Pd(0) catalytic systems and reaction temperatures: While using the Pd(dba)2/DavePhos/KF system at 80 °C resulted in β-C(sp3)-H monoarylation to produce β-monoarylated α,β-unsaturated ketones, harnessing the Pd(OAc)2/t-Bu XPhos/K2HPO4 system at 110 °C induced β-C(sp3)-H diarylation to afford β,β-diarylated α,β-unsaturated ketones. The method provides a versatile route that uses readily available ketone-derivatized α-nonsubstituted silyl prop-1-en-1-ol ethers as the alkene sources and is characterized by a good functional group compatibility, a broad substrate scope, and an excellent selectivity.
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Affiliation(s)
- Chong-Hui Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Liang Zeng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Gui-Fen Lv
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jing-Hao Qin
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Xin-Hua Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China
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10
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Yus M, Nájera C, Foubelo F, Sansano JM. Metal-Catalyzed Enantioconvergent Transformations. Chem Rev 2023; 123:11817-11893. [PMID: 37793021 PMCID: PMC10603790 DOI: 10.1021/acs.chemrev.3c00059] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Indexed: 10/06/2023]
Abstract
Enantioconvergent catalysis has expanded asymmetric synthesis to new methodologies able to convert racemic compounds into a single enantiomer. This review covers recent advances in transition-metal-catalyzed transformations, such as radical-based cross-coupling of racemic alkyl electrophiles with nucleophiles or racemic alkylmetals with electrophiles and reductive cross-coupling of two electrophiles mainly under Ni/bis(oxazoline) catalysis. C-H functionalization of racemic electrophiles or nucleophiles can be performed in an enantioconvergent manner. Hydroalkylation of alkenes, allenes, and acetylenes is an alternative to cross-coupling reactions. Hydrogen autotransfer has been applied to amination of racemic alcohols and C-C bond forming reactions (Guerbet reaction). Other metal-catalyzed reactions involve addition of racemic allylic systems to carbonyl compounds, propargylation of alcohols and phenols, amination of racemic 3-bromooxindoles, allenylation of carbonyl compounds with racemic allenolates or propargyl bromides, and hydroxylation of racemic 1,3-dicarbonyl compounds.
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Affiliation(s)
- Miguel Yus
- Centro
de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Carmen Nájera
- Centro
de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Francisco Foubelo
- Centro
de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Departamento
de Química Orgánica and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - José M. Sansano
- Centro
de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Departamento
de Química Orgánica and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
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11
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Wang X, Bai G, Liu R, Zhu X, Ye X, Zhang T, Zhang K, Bonne D, Rodriguez J, Wang H, Bao X. Enantioselective Nucleophilic Vinylic Substitution (S NV) toward 3-Alkenyl-bisoxindoles Facilitated by C6' Steric Bulk of Cinchona Alkaloid. Org Lett 2023; 25:5941-5945. [PMID: 37535818 DOI: 10.1021/acs.orglett.3c01964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A C6' bulky substituted quinine-catalyzed SNV reaction between 3-substituted oxindole and (E)-3-(nitromethylene)-oxindole was developed. This enantioselective C(sp3)-C(sp2) coupling furnished bisoxindole scaffolds featuring a vinyl-substituted all-carbon quaternary stereocenter with high stereoselectivities. In addition, the gram-scale synthesis and synthetic post-transformations were conducted to demonstrate the potential synthetic usefulness.
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Affiliation(s)
- Xingyue Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Guishun Bai
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ruoqi Liu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiaoli Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xinyi Ye
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Tao Zhang
- Shaoxing Minsheng Pharmaceutical Co., Ltd, Shaoxing 312071, China
| | - Kui Zhang
- Shaoxing Minsheng Pharmaceutical Co., Ltd, Shaoxing 312071, China
| | - Damien Bonne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Jean Rodriguez
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiaoze Bao
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
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12
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Liu HF, Long L, Zhu ZQ, Wu TF, Zhang YR, Pan HP, Ma AJ, Peng JB, Wang YH, Gao H, Zhang XZ. Enantioselective synthesis of α,α-diarylketones by sequential visible light photoactivation and phosphoric acid catalysis. SCIENCE ADVANCES 2023; 9:eadg7754. [PMID: 37327329 DOI: 10.1126/sciadv.adg7754] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/12/2023] [Indexed: 06/18/2023]
Abstract
Chiral ketones and their derivatives are useful synthetic intermediates for the synthesis of biologically active natural products and medicinally relevant molecules. Nevertheless, general and broadly applicable methods for enantioenriched acyclic α,α-disubstituted ketones, especially α,α-diarylketones, remain largely underdeveloped, owing to the easy racemization. Here, we report a visible light photoactivation and phosphoric acid-catalyzed alkyne-carbonyl metathesis/transfer hydrogenation one-pot reaction using arylalkyne, benzoquinone, and Hantzsch ester for the expeditious synthesis of α,α-diarylketones with excellent yields and enantioselectivities. In the reaction, three chemical bonds, including C═O, C─C, and C─H, are formed, providing a de novo synthesis reaction for chiral α,α-diarylketones. Moreover, this protocol provides a convenient and practical method to synthesize or modify complex bioactive molecules, including efficient routes to florylpicoxamid and BRL-15572 analogs. Computational mechanistic studies revealed that C-H/π interactions, π-π interaction, and the substituents of Hantzsch ester all play crucial roles in the stereocontrol of the reaction.
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Affiliation(s)
- Hong-Fu Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Liang Long
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education of China (MOE), Jinan University, Guangzhou 510632, China
| | - Zhi-Qiang Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Teng-Fei Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Yi-Rui Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Han-Peng Pan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Yong-Heng Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education of China (MOE), Jinan University, Guangzhou 510632, China
| | - Hao Gao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education of China (MOE), Jinan University, Guangzhou 510632, China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
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13
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Shen HR, Li CX, Jiang X, Lin Y, Liu JH, Zhu F, Wu ZL, Cai T, Wen W, He RX, Guo QX. Chiral aldehyde catalysis enables direct asymmetric α-substitution reaction of N-unprotected amino acids with halohydrocarbons. Chem Sci 2023; 14:5665-5671. [PMID: 37265737 PMCID: PMC10231321 DOI: 10.1039/d3sc01294h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/02/2023] [Indexed: 06/03/2023] Open
Abstract
The direct catalytic α-hydrocarbylation of readily available amino acids with halohydrocarbons is one of the most straightforward methods leading to α,α-disubstituted non-proteinogenic α-amino acid compounds. However, all the reported methodologies depend on N-protected amino acids as starting materials. Herein, we report on three highly efficient aldehyde-catalyzed direct α-hydrocarbylations of N-unprotected amino acid esters with aryl-, allyl-, and benzyl halides. By promoting a simple chiral BINOL-aldehyde catalyst or combining catalysts of a chiral aldehyde and Lewis acid ZnCl2, the asymmetric α-arylation, α-allylation, and α-benzylation of amino acid esters with the corresponding halohydrocarbons proceed smoothly, producing α,α-disubstituted α-amino acids in moderate-to-high yields and good-to-excellent enantioselectivities. The asymmetric α-arylation reaction can be applied in the formal synthesis of the clinical candidate compound (+)-AG-041R. Based on the results given by control experiments, three reaction models are proposed to illustrate the stereoselective-control outcomes.
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Affiliation(s)
- Hao-Ran Shen
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Chao-Xing Li
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Xin Jiang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Yao Lin
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Jian-Hua Liu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Fang Zhu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Zhu-Lian Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Tian Cai
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Wei Wen
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Rong-Xing He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
| | - Qi-Xiang Guo
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University Chongqing 400715 China
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14
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Williams CG, Nistanaki SK, Wells CW, Nelson HM. α-Vinylation of Ester Equivalents via Main Group Catalysis for the Construction of Quaternary Centers. Org Lett 2023; 25:3591-3595. [PMID: 37192420 DOI: 10.1021/acs.orglett.3c00535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A methodology for the construction of sterically congested quaternary centers via the trapping of vinyl carbocations with silyl ketene acetals is disclosed. This main group-catalyzed α-vinylation reaction is advantageous as methods to access these congested motifs are limited. Moreover, β,γ-unsaturated carbonyl moieties and tetrasubstituted alkenes are present in various bioactive natural products and pharmaceuticals, and this catalytic platform offers a means of accessing them using simple and inexpensive materials.
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Affiliation(s)
- Chloe G Williams
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Sepand K Nistanaki
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Conner W Wells
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Hosea M Nelson
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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15
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Kamikawa K. Asymmetric reactions involving aryne intermediates. Nat Rev Chem 2023:10.1038/s41570-023-00485-y. [PMID: 37117814 DOI: 10.1038/s41570-023-00485-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2023] [Indexed: 04/03/2023]
Abstract
Although arynes are usually considered fleeting intermediates, they are highly valuable synthons because they enable the introduction of aromatic rings and the simultaneous formation of new bonds at two sites. Although catalytic reactions using transition metals are excellent method for constructing complex polycyclic aromatic molecules in a single step, the use of asymmetric catalysis for the capture of arynes remains a crucial goal for the progress of aryne chemistry. Catalytic asymmetric reactions of arenes are challenging, requiring sufficient interactions between the neutral and highly reactive short-lived aryne intermediates in a stereo-controlled fashion. In addition, spontaneous decomposition, as well as side reactions, has hindered their development and, until recently, highly enantioselective reactions using arynes had remained elusive. This Review highlights asymmetric reactions using arynes, featuring diastereoselective, enantioselective and catalytic enantioselective reactions.
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16
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Liu JH, Lv XJ, Liu YK. Asymmetric Retro-Claisen Reaction Catalyzed by Chiral Aza-Bisoxazoline-Zn(II) Complex: Enantioselective Synthesis of α-Arylated Ketones. Org Lett 2023; 25:1706-1710. [PMID: 36881495 DOI: 10.1021/acs.orglett.3c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
An asymmetric retro-Claisen reaction of α-monosubstituted β-diketones and quinones (or quinone imine) has been developed under the catalysis of a chiral aza-bisoxazoline-Zn(II) complex. The reaction proceeds via a sequence of conjugate addition, arylation, hemiketal anion-initiated C-C bond cleavage, and enantioselective protonation of enolate to provide various functionalized α-arylated ketones bearing a tertiary stereogenic center with high enantioselectivities. Notably, biologically important benzofuran and γ-butyrolactone derivatives could be synthesized by application of the developed protocol.
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Affiliation(s)
- Jia-Hui Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xue-Jiao Lv
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Yan-Kai Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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17
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Roh B, Farah AO, Kim B, Feoktistova T, Moeller F, Kim KD, Cheong PHY, Lee HG. Stereospecific Acylative Suzuki–Miyaura Cross-Coupling: General Access to Optically Active α-Aryl Carbonyl Compounds. J Am Chem Soc 2023; 145:7075-7083. [PMID: 37016901 DOI: 10.1021/jacs.3c00637] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A novel strategy for the stereospecific Pd-catalyzed acylative cross-coupling of enantiomerically enriched alkylboron compounds has been developed. The protocol features an extremely high level of enantiospecificity to allow facile access to synthetically challenging and valuable chiral ketones and carboxylic acid derivatives. The use of a sterically encumbered and electron-rich phosphine ligand proved to be crucial for the success of the reaction. Furthermore, on the basis of experimental and computational studies, a unique mechanism for the transmetalation, assisted by the noncovalent interactions of the C(sp3)-based organoboron reagent, has been identified.
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Affiliation(s)
- Byeongdo Roh
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Abdikani Omar Farah
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Beomsu Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Taisiia Feoktistova
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Finn Moeller
- Department of Chemistry, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Kyeong Do Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Hong Geun Lee
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
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18
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Xie JH, Hou YM, Feng Z, You SL. Stereodivergent Construction of 1,3-Chiral Centers via Tandem Asymmetric Conjugate Addition and Allylic Substitution Reaction. Angew Chem Int Ed Engl 2023; 62:e202216396. [PMID: 36597878 DOI: 10.1002/anie.202216396] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
Herein, we report a synthesis of cyclohexanones bearing multi-continuous stereocenters by combining copper-catalyzed asymmetric conjugate addition of dialkylzinc reagents to cyclic enones with iridium-catalyzed asymmetric allylic substitution reaction. Good to excellent yields, diastereoselectivity and enantioselectivity can be obtained. Unlike the stereodivergent construction of adjacent stereocenters (1,2-position) reported in the literature, the current reaction can achieve the stereodivergent construction of nonadjacent stereocenters (1,3-position) by a proper combination of two chiral catalysts with different enantiomers.
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Affiliation(s)
- Jia-Hao Xie
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Yi-Ming Hou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Zuolijun Feng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
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19
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Ma C, Sun Y, Yang J, Guo H, Zhang J. Catalytic Asymmetric Synthesis of Tröger's Base Analogues with Nitrogen Stereocenter. ACS CENTRAL SCIENCE 2023; 9:64-71. [PMID: 36712492 PMCID: PMC9881208 DOI: 10.1021/acscentsci.2c01121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Indexed: 06/18/2023]
Abstract
Nitrogen stereocenters are common chiral units in natural products, pharmaceuticals, and chiral catalysts. However, their research has lagged largely behind, compared with carbon stereocenters and other heteroatom stereocenters. Herein, we report an efficient method for the catalytic asymmetric synthesis of Tröger's base analogues with nitrogen stereocenters via palladium catalysis and home-developed GF-Phos. It allows rapid construction of a new rigid cleft-like structure with both a C- and a N-stereogenic center in high efficiency and selectivity. A variety of applications as a chiral organocatalyst and metallic catalyst precursors were demonstrated. Furthermore, DFT calculations suggest that the NH···O hydrogen bonding and weak interaction between the substrate and ligand are crucial for the excellent enantioselectivity control.
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Affiliation(s)
- Chun Ma
- Department
of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Yue Sun
- Department
of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Junfeng Yang
- Department
of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
- Fudan
Zhangjiang Institute, Shanghai 201203, P. R. China
| | - Hao Guo
- Department
of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
- Zhuhai
Fudan Innovation Institute, Zhuhai, 519000, P. R. China
| | - Junliang Zhang
- Department
of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
- School
of Chemistry and Chemical Engineering, Henan
Normal University, Xinxiang, Henan 453007, P. R. China
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20
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Liu D, Liu ZR, Wang ZH, Ma C, Herbert S, Schirok H, Mei TS. Paired electrolysis-enabled nickel-catalyzed enantioselective reductive cross-coupling between α-chloroesters and aryl bromides. Nat Commun 2022; 13:7318. [PMID: 36443306 PMCID: PMC9705544 DOI: 10.1038/s41467-022-35073-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/17/2022] [Indexed: 11/29/2022] Open
Abstract
Electrochemical asymmetric catalysis has emerged as a sustainable and promising approach to the production of chiral compounds and the utilization of both the anode and cathode as working electrodes would provide a unique approach for organic synthesis. However, precise matching of the rate and electric potential of anodic oxidation and cathodic reduction make such idealized electrolysis difficult to achieve. Herein, asymmetric cross-coupling between α-chloroesters and aryl bromides is probed as a model reaction, wherein alkyl radicals are generated from the α-chloroesters through a sequential oxidative electron transfer process at the anode, while the nickel catalyst is reduced to a lower oxidation state at the cathode. Radical clock studies, cyclic voltammetry analysis, and electron paramagnetic resonance experiments support the synergistic involvement of anodic and cathodic redox events. This electrolytic method provides an alternative avenue for asymmetric catalysis that could find significant utility in organic synthesis.
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Affiliation(s)
- Dong Liu
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Zhao-Ran Liu
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Zhen-Hua Wang
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Cong Ma
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Simon Herbert
- grid.420044.60000 0004 0374 4101Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Hartmut Schirok
- grid.420044.60000 0004 0374 4101Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Tian-Sheng Mei
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
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21
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Shandu MP, Lamola JL, Holzapfel CW, Maumela MC, Moshapo PT. Application of
P
‐Bridged Biaryl Phosphines in Pd‐Catalyzed
α
‐Arylation Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202203712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Malibongwe P. Shandu
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Jairus L. Lamola
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Cedric W. Holzapfel
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Munaka Christopher Maumela
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
- Research and Technology (R&T) Sasol (Pty) Ltd 1 Klasie Havenga Road Sasolburg 1947 South Africa
| | - Paseka T. Moshapo
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
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22
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Zhou M, Lu H, Wang Z, Kato T, Liu Y, Maruoka K. Synthesis of 1,3‑dicarbonyl compounds bearing hetero-substituted α-quaternary carbon via Fe(II)-catalyzed alkylation with alkylsilyl peroxides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Dimakos V, Canterbury DP, Monfette S, Roosen PC, Newman SG. A Morita–Baylis–Hillman Inspired Cross-Coupling Strategy for the Direct α-Arylation of Cyclic Enones. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victoria Dimakos
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Daniel P. Canterbury
- Pfizer Medicine Design, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Sebastien Monfette
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Philipp C. Roosen
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Stephen G. Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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24
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Xiang Y, Du R, Wang S, Wu X, Tang J, Yang F, Xing D. KOtBu-catalysed α-homoallylic alkylation of acyclic amides with 1-aryl-1,3-dienes. Mol Divers 2022:10.1007/s11030-022-10503-8. [PMID: 36001226 DOI: 10.1007/s11030-022-10503-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/19/2022] [Indexed: 11/28/2022]
Abstract
Herein, we report a KOtBu-catalysed α-homoallylic alkylation of acyclic amides with 1-aryl-1,3-dienes. With this transition metal-free and atom-economic protocol, a series of α-homoallylic alkylated acyclic amides were synthesized in good to excellent yields. This transformation is proposed to proceed through a cation-π interaction-based C-C bond formation from the in situ-generated potassium enolate with the diene unit.
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Affiliation(s)
- Yunfei Xiang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Ruisheng Du
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Shang Wang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Xiang Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Jie Tang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Fan Yang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China.
| | - Dong Xing
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China.
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25
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Li H, Luo H, Ban Y, Wang Y, Li D, Yang J. Thioamide‐Directed Transition‐metal‐catalyzed C(sp2) –H bond vinylation and arylation of Ferrocenes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hao Li
- Ningxia University State Key Laboratory of High Efficiency Utilization of Coal and Green Chemical Engineering CHINA
| | - Hui Luo
- Ningxia University State Key Laboratory of High Efficiency Utilization of Coal and Green Chemical Engineering CHINA
| | - Yan Ban
- Ningxia University State Key Laboratory of High Efficiency Utilization of Coal and Green Chemical Engineering CHINA
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26
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Green light to a green arylation. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Li S, Chen Q, Yang J, Zhang J. Palladium‐Catalyzed Enantioselective γ‐Arylation of β,γ‐Unsaturated Butenolides. Angew Chem Int Ed Engl 2022; 61:e202202046. [DOI: 10.1002/anie.202202046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Indexed: 12/19/2022]
Affiliation(s)
- Sanliang Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qiaoyu Chen
- Academy for Engineering and Technology Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junfeng Yang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China
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28
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Li S, Davies PW, Shu W. Modular synthesis of α-arylated carboxylic acids, esters and amides via photocatalyzed triple C-F bond cleavage of methyltrifluorides. Chem Sci 2022; 13:6636-6641. [PMID: 35756515 PMCID: PMC9172449 DOI: 10.1039/d2sc01905a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/12/2022] [Indexed: 11/30/2022] Open
Abstract
α-Arylated carboxylic acids, esters and amides are widespread motifs in bioactive molecules and important building blocks in chemical synthesis. Thus, straightforward and rapid access to such structures is highly desirable. Here we report an organophotocatalytic multicomponent synthesis of α-arylated carboxylic acids, esters and amides from exhaustive defluorination of α-trifluoromethyl alkenes in the presence of alkyltrifluoroborates, water and nitrogen/oxygen nucleophiles. This operationally simple strategy features a unified access to functionally diverse α-arylated carboxylic acids, esters, and primary, secondary, and tertiary amides through backbone assembly from simple starting materials enabled by consecutive C–F bond functionalization at room temperature. Preliminary mechanistic investigations reveal that the reaction operates through a radical-triggered three-step cascade process, which involves distinct mechanisms for each defluorinative functionalization of the C–F bond. Here we report an organophotocatalytic synthesis of α-arylated carboxylic acids, esters and amides from exhaustive defluorination of α-trifluoromethyl alkenes in the presence of alkyltrifluoroborates, water and nitrogen/oxygen nucleophiles.![]()
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Affiliation(s)
- Sifan Li
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 Guangdong China .,School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Paul W Davies
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Wei Shu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 Guangdong China
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29
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Wales SM, Saunthwal RK, Clayden J. C(sp 3)-Arylation by Conformationally Accelerated Intramolecular Nucleophilic Aromatic Substitution (S NAr). Acc Chem Res 2022; 55:1731-1747. [PMID: 35620846 PMCID: PMC9219115 DOI: 10.1021/acs.accounts.2c00184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
The asymmetric synthesis of heavily substituted benzylic stereogenic
centers, prevalent in natural products, therapeutics, agrochemicals,
and catalysts, is an ongoing challenge. In this Account, we outline
our contribution to this endeavor, describing our discovery of a series
of new reactions that not only have synthetic applicability but also
present significant mechanistic intrigue. The story originated from
our longstanding interest in the stereochemistry and reactivity of
functionalized organolithiums. While investigating the lithiation
chemistry of ureas (a “Cinderella” sister of the more
established amides and carbamates), we noted an unexpected Truce–Smiles
(T-S) rearrangement involving the 1,4-N → C transposition of
a urea N′-aryl group to the α-carbanion
of an adjacent N-benzyl group. Despite this reaction
formally constituting an SNAr substitution, we found it
to be remarkably tolerant of the electronic properties of the migrating
aryl substituent and the degree of substitution at the carbanion.
Moreover, in contrast to classical SNAr reactions, the
rearrangement was sufficiently rapid that it took place under conditions
compatible with configurational stability in an organolithium intermediate,
enabling enantiospecific arylation at benzylic stereogenic centers.
Experimental and computational studies confirmed a low kinetic barrier
to the aryl migration arising from the strong preference for a trans arrangement of the urea N′-aryl
and carbonyl groups, populating a reactive conformer in which spatial
proximity was enforced between the carbanion and N′-aryl group, hugely accelerating ipso-substitution. This discovery led us to uncover a whole series of conformationally
accelerated intramolecular N → C aryl transfers using different
anilide-based functional groups, including a diverse range of urea,
carbamate, and thiocarbamate-substituted anions. Products included
enantioenriched α-tertiary amines (including α-arylated
N-heterocycles) and alcohols, as well as rare α-tertiary thiols.
Synthetically challenging diarylated centers with differentiated aryl
groups featured heavily in all product sets. The absolute enantiospecificity
(retention versus inversion) of the reaction was dependent on the
heteroatom α to the lithiation site: the origin of this stereodivergence
was probed both experimentally and computationally. Asymmetric variants
of the rearrangement were realized by enantioselective deprotonation,
and connective strategies were developed in which an intermolecular
C–C bond-forming event preceded the anionic rearrangement.
Substrates where the N′-nucleofuge (at the
aryl ipso position) was tethered to the migrating
arene allowed us to use the rearrangement as a ring expansion method
to generate 8- to 12-membered medium-ring N-heterocycles from very
simple precursors. Stabilized carbon nucleophiles such as alkali metal
enolates also readily promoted intramolecular N → C aryl transfer
in N′-arylureas, opening up access to biologically
relevant hydantoins, and enabling a “chiral memory”
approach for the (hetero)arylation of chiral α-amino acids with
programmable retention or inversion of configuration. Collectively,
our studies of electronically versatile T-S rearrangements in anilide-based
systems have culminated in a practical and general strategy for transition
metal-free C(sp3)-arylation. More broadly, our results
highlight the power of conformational activation to achieve unprecedented
reactivity in the construction of challenging C–C bonds.
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Affiliation(s)
- Steven M. Wales
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Rakesh K. Saunthwal
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Jonathan Clayden
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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30
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Xu Q, Zhang H, Ge FB, Wang XM, Zhang P, Lu CJ, Liu RR. Cu(I)-Catalyzed Asymmetric Arylation of Pyrroles with Diaryliodonium Salts toward the Synthesis of N-N Atropisomers. Org Lett 2022; 24:3138-3143. [PMID: 35452582 DOI: 10.1021/acs.orglett.2c00812] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report herein that copper(I) catalysis using a bis(phosphine) dioxide ligand can catalyze the desymmetric C-H arylation of prochiral bipyrroles. More than 50 nitrogen-nitrogen atropisomers were achieved in good to excellent yields with excellent enantioselectivities (≤97% yield, ≤98% ee). The reaction proceeds under mild conditions with good functional group compatibility on arenes and diaryliodonium salts. Moreover, this principle enables iterative arylation of the bipyrroles to enantioselectively arylate different positions during the catalysis of copper.
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Affiliation(s)
- Qi Xu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Huan Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Fang-Bei Ge
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Xiao-Mei Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Peng Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
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31
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Li S, Chen Q, Yang J, Zhang J. Palladium‐Catalyzed Enantioselective γ‐Arylation of β,γ‐Unsaturated Butenolides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sanliang Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Qiaoyu Chen
- Academy for Engineering and Technology Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junfeng Yang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China
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32
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Li LP, Han JQ, Liu YT, Yang F, Wu X, Xie JH, Zhou QL. A Three-Step Process to Facilitate the Enantioselective Assembly of Cis-Fused Octahydrophenanthrenes with a Quaternary Stereocenter. Org Lett 2022; 24:2590-2595. [PMID: 35357843 DOI: 10.1021/acs.orglett.2c00451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A three-step process for the enantioselective assembly of cis-fused octahydrophenanthrenes with a quaternary stereocenter is reported. This synthetic strategy relies on a regioselective γ-alkylation, a one-pot sequence of asymmetric hydrogenation and oxidation, and an intramolecular enolate arylation to facilitate the rapid and enantioselective construction of cis-fused octahydrophenanthrene scaffolds with an arylated all-carbon quaternary stereocenter concisely and efficiently.
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Affiliation(s)
- Lin-Ping Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jia-Qi Han
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yun-Ting Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Fan Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiong Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300070, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300070, China
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33
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Chen Y, Zhu S. Modular construction of α-furanyl ketones via semi-pinacol rearrangement-mediated ring expansion. Org Chem Front 2022. [DOI: 10.1039/d2qo01324j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient semi-pinacol rearrangement strategy of enynals involving a metal carbene intermediate has been developed, which allows the practical synthesis of various functionalized α-furanyl ketones in moderate to good yields under mild reaction conditions.
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Affiliation(s)
- Yang Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Youmei Institute of Intelligent Biomanufacturing, Foshan 528225, PR China
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34
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Lu Y, He N, Miao X, Wang D. Asymmetric cross Rauhut–Currier reactions of vinyl ketones with carbonyl para-quinone methides via phosphine catalysis. Org Chem Front 2022. [DOI: 10.1039/d2qo00866a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel cross Rauhut–Currier reactions, involving chiral phosphine catalysis, between vinyl ketones and terminal-carbonyl-substituted para-quinone methides are presented.
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Affiliation(s)
- Yue Lu
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Ocean University of China, Qingdao 266100, China
| | - Ningtao He
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Ocean University of China, Qingdao 266100, China
| | - Xiaohe Miao
- Instrumentation and Service Center for Physical Sciences, Westlake University, Hangzhou 310024, China
| | - De Wang
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
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35
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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36
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Shekhar S, Ahmed TS, Ickes AR, Haibach MC. Recent Advances in Nonprecious Metal Catalysis. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shashank Shekhar
- Process Research and Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Tonia S. Ahmed
- Process Research and Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Andrew R. Ickes
- Process Research and Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Michael C. Haibach
- Process Research and Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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37
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Bächle F, Link A, Amgoune A, Tlili A. From Academia to the Market - Air-stable Ni( ii)/Josiphos Catalysts. Chimia (Aarau) 2021; 75:943-947. [PMID: 34798916 DOI: 10.2533/chimia.2021.943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The design, synthesis, commercialization and application of air-stable Ni(II)/Josiphos complexes has been realized in a collaboration between Solvias and ICBMS (University Lyon 1). The Ni-complexes are utilized as versatile precatalysts for diverse cross-coupling reactions. Apart from being active in established C-C and C-N couplings at low catalyst loadings, the novel Ni-precatalysts enabled the development of the challenging monoarylation of ammonia, ammonia surrogates and even alkylammonium chlorides with aryl carbamates. Finally, the α-arylation of acetone with aryl chlorides, carbamates and pivalates was demonstrated using the Ni(II)/Josiphos precatalysts.
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Affiliation(s)
- Florian Bächle
- Solvias AG, Römerpark 2, CH-4303 Kaiseraugst, Switzerland
| | - Achim Link
- Solvias AG, Römerpark 2, CH-4303 Kaiseraugst, Switzerland;,
| | - Abderrahmane Amgoune
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France;,
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38
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Lin YC, Yen KW, Lin HJ, Yang YC, Wu YK. Haloarene-guided cascade arylation of cyclic vinylogous esters under palladium catalysis. Chem Commun (Camb) 2021; 57:12119-12122. [PMID: 34719697 DOI: 10.1039/d1cc05006k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method is presented for the synthesis of diaryl cyclic vinylogous esters. The sequence of C(sp3)-H arylation events is programed under the differentiated reactivity of the aryl halides, and the optimized reaction system is effectively diverted from producing dihomo-arylated products. The site selectivity of the second arylation is notably modulated by the substitution pattern of the substrates.
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Affiliation(s)
- Yi-Ching Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Ko-Wang Yen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Hsuan-Jen Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yi-Chi Yang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
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39
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Zhou C, Lv J, Xu W, Lu H, Kato T, Liu Y, Maruoka K. Highly Selective Monoalkylation of Active Methylene and Related Derivatives using Alkylsilyl Peroxides by a Catalytic CuI‐DMAP System. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Canhua Zhou
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jiamin Lv
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Weiping Xu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Hanbin Lu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Terumasa Kato
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
| | - Yan Liu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
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40
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Cheng S, Jing Y, Cao L, Li W, Zhang X. Tandem Reaction of Phenyl
α
‐Cyano‐
α
‐arylacetates with Quinone Monoimines. ChemistrySelect 2021. [DOI: 10.1002/slct.202102187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shao‐Bing Cheng
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yi Jing
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lian‐Yi Cao
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen‐Zhe Li
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiao‐Mei Zhang
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
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41
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Kalkman ED, Hartwig JF. Direct Observation of Diastereomeric α-C-Bound Enolates during Enantioselective α-Arylations: Synthesis, Characterization, and Reactivity of Arylpalladium Fluorooxindole Complexes. J Am Chem Soc 2021; 143:11741-11750. [PMID: 34308646 DOI: 10.1021/jacs.1c05346] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Pd-catalyzed asymmetric α-arylation of carbonyl compounds is a valuable strategy to form benzylic stereocenters. However, the origin of the stereoselectivity of these reactions is poorly understood, and little is known about the reactivity of the putative diastereomeric arylpalladium enolate intermediates. To this end, we report the synthesis and characterization of a series of diphosphine-ligated arylpalladium fluoroenolate complexes, including complexes bearing a metal-bound, stereogenic carbon and an enantioenriched chiral diphosphine ligand. These complexes reductively eliminate to form chiral α-aryl-α-fluorooxindoles with enantioselectivities and rates that are relevant to those of the catalytic process with SEGPHOS as the ancillary ligand. Kinetic studies showed that the rate of reductive elimination is slightly slower than the rate of epimerization of the intermediate, causing the reductive elimination step to impart the greatest influence on the enantioselectivity. DFT calculations of these processes are consistent with these experimental rates and suggest that the minor diastereomer forms the major enantiomer of the product. The rates of reductive elimination from complexes containing a variety of electronically varied aryl ligands revealed the unusual trend that complexes bearing more electron-rich aryl ligands react faster than those bearing more electron-poor aryl ligands. Noncovalent Interaction (NCI) and Natural Bond Orbital (NBO) analyses of the transition-state structures for reductive elimination from the SEGPHOS-ligated complexes revealed key donor-acceptor interactions between the Pd center and the fluoroenolate fragment. These interactions stabilize the pathway to the major product enantiomer more strongly than they stabilize that to the minor enantiomer.
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Affiliation(s)
- Eric D Kalkman
- Department of Chemistry, University of California, Berkeley, California 94702, United States
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, California 94702, United States
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42
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Jud W, Sommer F, Kappe CO, Cantillo D. Electrochemical α-Arylation of Ketones via Anodic Oxidation of In Situ Generated Silyl Enol Ethers. J Org Chem 2021; 86:16026-16034. [PMID: 34343004 DOI: 10.1021/acs.joc.1c01224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An electrochemical procedure for the α-arylation of ketones has been developed. The method is based on the generation and one-pot anodic oxidation of silyl enol ethers in the presence of the arene. This strategy avoids isolation of the silyl enol intermediate and the utilization of external supporting electrolytes. Intermolecular arylations, which had not been reported so far, are possible when electron-rich arenes are utilized as coupling partners. The method has been demonstrated for a wide variety of aryl ketones and activated arenes, with moderate to good yields (up to 69%) obtained. Mechanistic insights and a theoretical rationale that explains the ketone α-arylation versus dimerization selectivity are also presented.
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Affiliation(s)
- Wolfgang Jud
- Institute of Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
| | - Florian Sommer
- Institute of Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
| | - David Cantillo
- Institute of Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
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43
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Wang M, Wang W, Li D, Wang WJ, Zhan R, Shao LD. α-C(sp 3)-H Arylation of Cyclic Carbonyl Compounds. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:379-404. [PMID: 34097248 PMCID: PMC8275813 DOI: 10.1007/s13659-021-00312-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/24/2021] [Indexed: 05/05/2023]
Abstract
α-C(sp3)-H arylation is an important type of C-H functionalization. Various biologically significant natural products, chemical intermediates, and drugs have been effectively prepared via C-H functionalization. Cyclic carbonyl compounds comprise of cyclic ketones, enones, lactones, and lactams. The α-C(sp3)-H arylation of these compounds have been exhibited high efficiency in forming C(sp3)-C(sp2) bonds, played a crucial role in organic synthesis, and attracted majority of interests from organic and medicinal communities. This review focused on the most significant advances including methods, mechanism, and applications in total synthesis of natural products in the field of α-C(sp3)-H arylations of cyclic carbonyl compounds in recent years.
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Affiliation(s)
- Mei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Dashan Li
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wen-Jing Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Rui Zhan
- School of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650050, China.
| | - Li-Dong Shao
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China.
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44
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Ostrowska S, Scattolin T, Nolan SP. N-Heterocyclic carbene complexes enabling the α-arylation of carbonyl compounds. Chem Commun (Camb) 2021; 57:4354-4375. [PMID: 33949497 DOI: 10.1039/d1cc00913c] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The considerable importance of α-arylated carbonyl compounds, which are widely used as final products or as key intermediates in the pharmaceutical industry, has prompted numerous research groups to develop efficient synthetic strategies for their preparation in recent decades. In this context, the α-arylation of carbonyl compounds catalyzed by transition-metal complexes have been particularly helpful in constructing this motif. As illustrated in this contribution, tremendous advances have taken place using palladium- and nickel-NHC (NHC = N-heterocyclic carbene) complexes as pre-catalysts for the arylation of a wide range of ketones, aldehydes, esters and amides with electron-rich, electron-neutral, electron-poor, and sterically hindered aryl halides or pseudo-halides. Despite significant progress, especially in asymmetric α-arylations promoted by chiral NHC ligands, there are numerous challenges which have and continue to encourage further studies on this topic. Some of these are presented in this report.
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Affiliation(s)
- Sylwia Ostrowska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium.
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium.
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45
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Song Y, Xu S, Zhang S, Fu J, Lin G, Feng C. Palladium‐Catalyzed Tandem γ‐Arylation/Aromatization of Cyclohex‐2‐En‐1‐One Derivatives: A Route to 3,4‐Dihydroanthracen‐1(2
H
)‐Ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yi‐Kang Song
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
| | - Si‐Yu Xu
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
| | - Shu‐Sheng Zhang
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
| | - Jian‐Guo Fu
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
| | - Guo‐Qiang Lin
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Science 345 Lingling Road Shanghai 200032 People's Republic of China
| | - Chen‐Guo Feng
- The Research Center of Chiral Drugs Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Science 345 Lingling Road Shanghai 200032 People's Republic of China
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 People's Republic of China
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46
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Wu T, Zhou Q, Tang W. Enantioselective α-Carbonylative Arylation for Facile Construction of Chiral Spirocyclic β,β'-Diketones. Angew Chem Int Ed Engl 2021; 60:9978-9983. [PMID: 33599064 DOI: 10.1002/anie.202101668] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Indexed: 01/03/2023]
Abstract
We herein describe the first enantioselective α-carbonylative arylation, providing a diverse set of chiral spiro β,β'-diketones bearing various ring sizes and functionalities in high yields and good to excellent enantioselectivities. Calculations suggest the transformation proceeds through reductive elimination instead of nucleophilic addition pathway.
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Affiliation(s)
- Ting Wu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai, 200032, China
| | - Qinghai Zhou
- College of Chemistry and Materials Science, Shanghai Normal University, 106 Guilin Road, Shanghai, 200233, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai, 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
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47
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Wu T, Zhou Q, Tang W. Enantioselective α‐Carbonylative Arylation for Facile Construction of Chiral Spirocyclic β,β′‐Diketones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ting Wu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences 345 Ling Ling Rd Shanghai 200032 China
| | - Qinghai Zhou
- College of Chemistry and Materials Science Shanghai Normal University 106 Guilin Road Shanghai 200233 China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences 345 Ling Ling Rd Shanghai 200032 China
- School of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China
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48
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DeLano TJ, Dibrell SE, Lacker CR, Pancoast AR, Poremba KE, Cleary L, Sigman MS, Reisman SE. Nickel-catalyzed asymmetric reductive cross-coupling of α-chloroesters with (hetero)aryl iodides. Chem Sci 2021; 12:7758-7762. [PMID: 34168828 PMCID: PMC8188512 DOI: 10.1039/d1sc00822f] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An asymmetric reductive cross-coupling of α-chloroesters and (hetero)aryl iodides is reported. This nickel-catalyzed reaction proceeds with a chiral BiOX ligand under mild conditions, affording α-arylesters in good yields and enantioselectivities. The reaction is tolerant of a variety of functional groups, and the resulting products can be converted to pharmaceutically-relevant chiral building blocks. A multivariate linear regression model was developed to quantitatively relate the influence of the α-chloroester substrate and ligand on enantioselectivity. A Ni-catalyzed enantioselective reductive cross-coupling of α-chloroesters and (hetero)aryl iodides is reported. A MLR model was developed to quantitatively relate the influence of the α-chloroester substrate and ligand on enantioselectivity.![]()
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Affiliation(s)
- Travis J DeLano
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - Sara E Dibrell
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - Caitlin R Lacker
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - Adam R Pancoast
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
| | - Kelsey E Poremba
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - Leah Cleary
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - Matthew S Sigman
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
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49
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Cheng S, Liu H, Jing Y, Cao L, Zhang X. Tandem Conjugate Addition/Aromatization/Acyl Transfer Reaction between 3‐Aryl‐2‐nitropropanoates and Quinone Monoimines. ChemistrySelect 2021. [DOI: 10.1002/slct.202100557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shao‐Bing Cheng
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hui Liu
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yi Jing
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lian‐Yi Cao
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiao‐Mei Zhang
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
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50
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Lv J, Xu W, Lu H, Kato T, Liu Y, Maruoka K. The copper-catalyzed selective monoalkylation of active methylene compounds with alkylsilyl peroxides. Org Biomol Chem 2021; 19:2658-2662. [PMID: 33687416 DOI: 10.1039/d1ob00075f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel method for a mild copper-catalyzed selective monoalkylation of active methylene compounds with various alkylsilyl peroxides has been developed. The reaction has a broad substrate scope and our mechanistic studies suggest the participation of radical species in this alkylation reaction.
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Affiliation(s)
- Jiamin Lv
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
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