1
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Yang KC, Zheng SL, Wen Z, Zhang YS, Ni HL, Chen L. Dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones. Org Biomol Chem 2024; 22:3453-3458. [PMID: 38596838 DOI: 10.1039/d4ob00190g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A brand-new procedure for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones has been disclosed via a HOTf or Fe(OTf)3-catalyzed dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes. Aryl, alkenyl and alkyl terminal alkynes are suitable to couple with a broad range of 3-hydroxyisoindolinones to afford the desired products in moderate to good yields. This protocol features the use of an inexpensive catalyst, mild reaction conditions, broad substrate scope and easy elaboration of the products.
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Affiliation(s)
- Kai-Cheng Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P. R. China.
| | - Shi-Lu Zheng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P. R. China.
| | - Zhong Wen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P. R. China.
| | - Yu-Shan Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P. R. China.
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, 5 Jing An Road, Chengdu 610066, P. R. China
| | - Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P. R. China.
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2
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Sun T, Guo L, Li Q, Cao ZC. Nickel-Catalyzed Chemoselective Carbomagnesiation for Atroposelective Ring-Opening Difunctionalization. Angew Chem Int Ed Engl 2024:e202401756. [PMID: 38651647 DOI: 10.1002/anie.202401756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/15/2024] [Accepted: 04/23/2024] [Indexed: 04/25/2024]
Abstract
There is a pressing need for methods that can connect enantioenriched organic compounds with readily accessible building blocks via asymmetric functionalization of unreactive chemical bonds in organic synthesis and medicinal chemistry. Herein, the asymmetric chemoselective cleavage of two unactivated C(Ar)-O bonds in the same molecule is disclosed for the first time through an unusual nickel-catalyzed carbomagnesiation. This reaction facilitates the evolution of a novel atroposelective ring-opening difunctionalization. Utilizing readily available dibenzo bicyclic substrates, diverse valuable axially chiral biaryls are furnished with high efficiencies. Synthetic elaborations showcase the application potential of this method. The features of this method include good atom-economy, multiple roles of the nucleophile, and a simple catalytic system that enables the precise magnesiation of an α-C(Ar)-O bond and arylation of a β-C(Ar)-O bond.
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Affiliation(s)
- Tingting Sun
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, No. 130, Changjiangxilu, Hefei, Anhui, China, 230036
| | - Linchao Guo
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, No. 130, Changjiangxilu, Hefei, Anhui, China, 230036
| | - Qi Li
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, No. 130, Changjiangxilu, Hefei, Anhui, China, 230036
| | - Zhi-Chao Cao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, Anhui Agricultural University, No. 130, Changjiangxilu, Hefei, Anhui, China, 230036
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3
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Lin J, Jia M, Song X, Yu H, Ma S. Pd-Catalyzed Enantioselective Creation of All-Carbon Quaternary Center with 2,3-Allenylic Carbonates. Org Lett 2024. [PMID: 38489519 DOI: 10.1021/acs.orglett.2c02497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Enantioselective construction of all-carbon quaternary centers has been achieved via the palladium-catalyzed highly enantioselective allenylation of oxindoles with 2,3-allenylic carbonates to afford a variety of optically active allene products, which contain oxindole units with different functional groups, in high ee. The corresponding synthetic applications have also been demonstrated.
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Affiliation(s)
- Jie Lin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Minqiang Jia
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Xu Song
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Hao Yu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
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4
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Xu CH, Xiong ZQ, Qin JH, Xu XH, Li JH. Nickel-Catalyzed Reductive Cross-Coupling of Propargylic Acetates with Chloro(vinyl)silanes: Access to Silylallenes. J Org Chem 2024; 89:2885-2894. [PMID: 38355424 DOI: 10.1021/acs.joc.3c02228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Because of their various reactivities, propargyl acetates are refined chemical intermediates that are extensively applied in pharmaceutical synthesis. Currently, reactions between propargyl acetates and chlorosilanes may be the most effective method for synthesizing silylallenes. Nevertheless, owing to the adaptability and selectivity of substrates, transition metal catalysis is difficult to achieve. Herein, nickel-catalyzed reductive cross-coupling reactions between propargyl acetates and substituted vinyl chlorosilanes for the synthesis of tetrasubstituted silylallenes are described. Therein, metallic zinc is a crucial reductant that effectively enables two electrophilic reagents to selectively construct C(sp2)-Si bonds. Additionally, a Ni-catalyzed reductive mechanism involving a radical process is proposed on the basis of deuteration-labeled experiments.
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Affiliation(s)
- Chong-Hui Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Zhi-Qiang Xiong
- 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 of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 475004, Henan, China
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5
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Rosales-Amezcua SC, Ballinas-Indili R, López-Reyes ME, Guevara-Vela JM, Rocha-Rinza T, Toscano RA, Álvarez-Toledano C. Synthesis of Functionalized Tetrasubstituted Allenes by the Addition of Bis(trimethylsilyl)ketene Acetals to Ynones Catalyzed by Gold(I). J Org Chem 2024; 89:3092-3101. [PMID: 38359145 DOI: 10.1021/acs.joc.3c02550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
We have developed a straightforward and rapid methodology for the synthesis of tetrasubstituted allenes bearing carboxylic acids in the 1,3-position through the gold(I)-catalyzed nucleophilic addition of bis(trimethylsilyl)ketene acetals to ynones. The reaction was evaluated with several substrates, and 21 allenes were obtained in moderate to good yields. Using DFT calculations, we studied the mechanism of the reaction, which suggested a nucleophilic 1,4-addition pathway. The potential of allenes to act as a source of highly functionalized lactones was also explored.
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Affiliation(s)
- Saulo C Rosales-Amezcua
- Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Cd. de México 04510, Mexico
| | - Ricardo Ballinas-Indili
- Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Cd. de México 04510, Mexico
| | - Morelia E López-Reyes
- Departamento de Química, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Mexico
| | - José Manuel Guevara-Vela
- Departamento de Química Física Aplicada, Universidad Autónoma de Madrid, Francisco Tomás y Valiente, 7, Madrid 28049, Spain
| | - Tomás Rocha-Rinza
- Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Cd. de México 04510, Mexico
| | - Rúben A Toscano
- Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Cd. de México 04510, Mexico
| | - Cecilio Álvarez-Toledano
- Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Cd. de México 04510, Mexico
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6
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Zhang X, Song X, Ni Q. Organocatalytic regio- and enantioselective C1-arylation of β,γ-alkynyl-α-imino esters with pyrrolo[2,1- a]isoquinolines. Chem Commun (Camb) 2024; 60:831-834. [PMID: 38131183 DOI: 10.1039/d3cc04946a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
We herein report regio- and enantioselective arylation of β,γ-alkynyl-α-imino esters with pyrroloisoquinolines. Using chiral phosphoric acid catalysts, a wide range of novel axially chiral tetrasubstituted α-amino allenoates were accessed in good yields with excellent enantioselectivities. Notably, this transformation occurred preferentially at the sterically more hindered C1-position of pyrroloisoquinolines. The potential scalability and late-stage functionalization demonstrated the utility of the current protocol.
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Affiliation(s)
- Xuan Zhang
- College of Chemistry and Materials Science, Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.
| | - Xiaoxiao Song
- College of Chemistry and Materials Science, Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.
| | - Qijian Ni
- College of Chemistry and Materials Science, Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.
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7
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Qin JH, Xiong ZQ, Cheng C, Hu M, Li JH. Electroreductive Carboxylation of Propargylic Acetates with CO 2: Access to Tetrasubstituted 2,3-Allenoates. Org Lett 2023; 25:9176-9180. [PMID: 38113454 DOI: 10.1021/acs.orglett.3c03735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
An electroreductive carboxylation of propargylic alcohols with CO2 and then workup with TMSCHN2 to construct tetrasubstituted 2,3-allenoates is developed. This method allows the incorporation of an external ester group into the resulting allene system through electroreduction, carboxylation, and deacetoxylation cascades. Mechanistically, electricity on/off experiments and cyclic voltammetry analysis support the preferential generation of the CO2 radical anion or the 3-aryl propargylic acetate radical anion based on the electron nature of the aryl rings.
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Affiliation(s)
- Jing-Hao Qin
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhi-Qiang Xiong
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Chaozhihui Cheng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Ming Hu
- 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
| | - 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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8
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Xu CH, Xiong ZQ, Qin JH, Xu XH, Li JH. Cobalt-Promoted Electroreductive Cross-Coupling of Prop-2-yn-1-yl Acetates with Chloro(vinyl)silanes. Org Lett 2023; 25:7263-7267. [PMID: 37756013 DOI: 10.1021/acs.orglett.3c02989] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
An electroreductive cross-coupling of prop-2-yn-1-yl acetates with chloro(vinyl)silanes for producing tetrasubstituted silylallenes is developed. The method enables the formation of a new C─Si bond through the cathodic reduction formation of the silyl radical, radical addition across the C≡C bond, the alkenyl anion intermediate formation, and deacetoxylation and represents a mild, practical route to the synthesis of silylallenes. Mechanistic studies reveal that CoCl2 acts as the mediator to promote the formation of the alkenyl anion intermediate via electron transfer.
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Affiliation(s)
- Chong-Hui Xu
- 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
| | - Zhi-Qiang Xiong
- 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
- 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
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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9
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Zhang D, Fan J, Shi Y, Huang Y, Fu C, Wu X, Ma S. Copper-catalyzed propargylic C-H functionalization for allene syntheses. Chem Sci 2023; 14:9191-9196. [PMID: 37655026 PMCID: PMC10466309 DOI: 10.1039/d3sc01501g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/08/2023] [Indexed: 09/02/2023] Open
Abstract
Allenenitriles bearing different synthetically versatile functional groups have been prepared smoothly from 5-alkynyl fluorosulfonamides in decent yields with an excellent chemo- and regio-selectivity under redox neutral conditions. The resulting allenenitriles can be readily converted to useful functionalized heterocycles. Based on mechanistic study, it is confirmed that this is the first example of radical-based non-activated propargylic C-H functionalization for allene syntheses.
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Affiliation(s)
- Dongjie Zhang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Junjie Fan
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Yaqi Shi
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Yankai Huang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Xiaoyan Wu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 P. R. China
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10
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Unexpected Decarbonylation of Acylethynylpyrroles under the Action of Cyanomethyl Carbanion: A Robust Access to Ethynylpyrroles. Molecules 2023; 28:molecules28031389. [PMID: 36771055 PMCID: PMC9919934 DOI: 10.3390/molecules28031389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
It has been found that the addition of CH2CN- anion to the carbonyl group of acylethynylpyrroles, generated from acetonitrile and t-BuOK, results in the formation of acetylenic alcohols, which undergo unexpectedly easy (room temperature) decomposition to ethynylpyrroles and cyanomethylphenylketones (retro-Favorsky reaction). This finding allows a robust synthesis of ethynylpyrroles in up to 95% yields to be developed. Since acylethynylpyrroles became available, the strategy thus found makes ethynylpyrroles more accessible than earlier. The quantum-chemical calculations (B2PLYP/6-311G**//B3LYP/6-311G**+C-PCM/acetonitrile) confirm the thermodynamic preference of the decomposition of the intermediate acetylenic alcohols to free ethynylpyrroles rather than their potassium derivatives.
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11
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Wang G, Li L, Jiang Y, Zhao X, Ban X, Shao T, Yin Y, Jiang Z. Kinetic Resolution of Azaarylethynyl Tertiary Alcohols by Chiral Brønsted Acid Catalysed Phosphine-Mediated Deoxygenation. Angew Chem Int Ed Engl 2023; 62:e202214838. [PMID: 36412539 DOI: 10.1002/anie.202214838] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/07/2022] [Accepted: 11/22/2022] [Indexed: 11/23/2022]
Abstract
A chiral Brønsted acid catalysed phosphine-mediated deoxygenation protocol is reported. This metal-free method provides a precise kinetic resolution platform for azaarylethynyl tertiary alcohols, which are a broad category of biologically and synthetically important azaarene derivatives. In addition to providing an efficient method for the first asymmetric preparation of these tertiary alcohols, the strategy facilitates the construction of azaaryl-functionalized allenes with good to excellent enantioselectivities. The high selectivity factors (s up to 235), broad substrate scope, and ability to convert azaaryl compounds into both chiral tertiary alcohols and allenes robustly underscore the efficiency and promising utility of this method. The practicability is further validated by the successful synthesis of deuterated allenes with high ee values and substantial incorporation of deuterium using inexpensive D2 O as the deuterium source.
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Affiliation(s)
- Guanghui Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Lulu Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yifeng Jiang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Xiaowei Zhao
- International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Xu Ban
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Tianju Shao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yanli Yin
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China.,College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou, Henan, 450001, P. R. China
| | - Zhiyong Jiang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China.,International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan, 475004, P. R. China
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12
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Zou FF, Luo Z, Yang YT, Zhuang X, Hong CM, Liu ZQ, Li WF, Li QH, Liu TL. Sulfonylation of Propargyl Alcohols with Sulfinamides for the Synthesis of Allenyl Sulfones. J Org Chem 2022; 87:15061-15070. [DOI: 10.1021/acs.joc.2c01495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Fei-Fei Zou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Zhen Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yu-Ting Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Xin Zhuang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Chuan-Ming Hong
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Zheng-Qiang Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Wan-Fang Li
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Qing-Hua Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Tang-Lin Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
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13
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Geissler AGA, Breit B. Synthesis of β-Allenylamines by Addition of Chloroprene Grignards to N-Boc Imines. Org Lett 2022; 24:7967-7971. [DOI: 10.1021/acs.orglett.2c03105] [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)
- Arne G. A. Geissler
- Institute of Organic Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Bernhard Breit
- Institute of Organic Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104 Freiburg, Germany
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14
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Copper-catalyzed reaction of alkyl trifluoromethyl diazoalkane for the synthesis of trifluoromethyl allenes. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110050] [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]
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15
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Bai JF, Tang J, Gao X, Jiang ZJ, Tang B, Chen J, Gao Z. Regioselective Cycloaddition and Substitution Reaction of Tertiary Propargylic Alcohols and Heteroareneboronic Acids via Acid Catalysis. Org Lett 2022; 24:4507-4512. [PMID: 35708270 DOI: 10.1021/acs.orglett.2c01403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report an acid-catalyzed formal cycloaddition and dehydrative substitution reaction of tertiary propargylic alcohols and heteroareneboronic acids. The properties of the substituents on the alkynyl moiety determines the regioselectivity of the reaction, which could selectively construct fused heterocycles, tetrasubstituted allenes, or 1,3-dienes. This reaction proceeds efficiently with a wide array of substrate scope in up to 89% yield. A significant advantage of this protocol is the transition-metal-free and mild conditions needed.
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Affiliation(s)
- Jian-Fei Bai
- School of Biological and Chemical Engineering, NingboTech University, 315100 Ningbo, P. R. China
| | - Jianbo Tang
- School of Biological and Chemical Engineering, NingboTech University, 315100 Ningbo, P. R. China
| | - Xiaolong Gao
- Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, 730000 Lanzhou, P. R. China
| | - Zhi-Jiang Jiang
- School of Biological and Chemical Engineering, NingboTech University, 315100 Ningbo, P. R. China
| | - Bencan Tang
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, 315100 Ningbo, PR China
| | - Jia Chen
- School of Biological and Chemical Engineering, NingboTech University, 315100 Ningbo, P. R. China
| | - Zhanghua Gao
- School of Biological and Chemical Engineering, NingboTech University, 315100 Ningbo, P. R. China
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16
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Mishra S, Nair SR, Baire B. Recent approaches for the synthesis of pyridines and (iso)quinolines using propargylic Alcohols. Org Biomol Chem 2022; 20:6037-6056. [PMID: 35678139 DOI: 10.1039/d2ob00587e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Propargylic alcohols are one of the readily available and highly explored building blocks in organic synthesis. They show distinct reactivities compared to simple alcohols and/or alkynes, and hence provide diverse possibilities to develop novel synthetic strategies for the construction of polycyclic systems, including heterocycles. The six-membered heterocycles, pyridines, quinolines, and isoquinolines, are very important privileged structures in medicinal chemistry and drug discovery due to their broad spectrum of biological activities. They are also part of vitamins, nucleic acids, pharmaceuticals, antibiotics, dyes, and agrochemicals. Many synthetic strategies have been developed for the rapid and efficient generation of these cyclic systems. One such strategy is employing the propargylic alcohols as reactants in the form of either a 3-carbon component or 2-carbon unit. Thus, in this review article, we aimed to summarize various approaches to pyridines, quinolines, and isoquinolines from propargylic alcohols. To the best of our knowledge, so far, no focused reviews have appeared on this topic in the literature. Due to the many reports available, we also restricted ourselves to the developments during the past 17 years, i.e., 2005-2021. We strongly believe that this review article provides comprehensive coverage of research articles on the title topic, and will be of great value for the organic synthetic community for further developments in this area of research.
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Affiliation(s)
- Surabhi Mishra
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Sindoori R Nair
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Beeraiah Baire
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
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17
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Loui HJ, Schneider C. Cooperative Palladium/Brønsted Acid Catalysis toward the Highly Enantioselective Allenylation of β-Keto Esters. Org Lett 2022; 24:1496-1501. [PMID: 35171616 DOI: 10.1021/acs.orglett.2c00179] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report the first enantioselective allenylation of Pd enolates enabled by cooperative Pd/Brønsted acid catalysis employing β-keto esters and propargyl alcohols. The enantioselectivity originates solely from an in-situ-generated chiral metal enolate in an open transition state with no additional binding of the propargyl component to the catalyst. Thus a broad substrate scope was established, furnishing hitherto inaccessible products in very good yields with excellent enantioselectivities (up to >99:1 e.r.).
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Affiliation(s)
- Henning J Loui
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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18
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Qian C, Liu M, Sun J, Li P. Chiral phosphoric acid-catalyzed regio- and enantioselective reactions of functionalized propargylic alcohols. Org Chem Front 2022. [DOI: 10.1039/d1qo01864g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Chiral phosphoric acid has been utilized for covalent activation of propargylic alcohols to act as pre-catalyst. With this activation mode, a range of highly regio- and enantioenriched heterocyclic products could be generated efficiently from racemic propargylic alcohols.
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Affiliation(s)
- Chenxiao Qian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Meiwen Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Pengfei Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
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19
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Xiao W, Wu J. Recent advances in the metal-catalyzed asymmetric synthesis of chiral allenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00994c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Recent advances in the metal-catalyzed asymmetric synthesis of chiral allenes are summarized. This review is categorized based on the starting material, including alkynes, racemic allenes, and conjugated dienes.
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Affiliation(s)
- Wei Xiao
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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20
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Liu T, Liu Y, Guo W. Alkynyl-induced construction of stereodefined polysubstituted conjugated enynes via Pd-catalyzed allylic arylations. Org Chem Front 2022. [DOI: 10.1039/d2qo00511e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The alkynyl-induced construction of polysubstituted conjugated enynes with exclusive (Z)-configurations via Pd-catalyzed allylic arylations is described.
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Affiliation(s)
- Teng Liu
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Yin Liu
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Wusheng Guo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
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21
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Liu C, Li H, Wang B, Guo Z, Wang Y, Zhang J, Xie M. Temperature Controlled Di- and Monosulfonylation of Propargyl Alcohols with Sodium Sulfinates: Switchable Access to (E)-Allyl, Vinyldisulfones and Propargyl Sulfones. Org Chem Front 2022. [DOI: 10.1039/d1qo01906f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A switchable di- and monosulfonylation of propargyl alcohols with sodium sulfinates is developed, which successfully affords (E)-allyl, vinyldisulfones and propargyl sulfones in good to excellent yields, respectively. The salient features...
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22
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Jiang S, Ma H, Yang R, Song XR, Xiao Q. Recent advances in the cascade reactions of enynols/diynols for the synthesis of carbo- and heterocycles. Org Chem Front 2022. [DOI: 10.1039/d2qo01154a] [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
This review summaries a view of the advances in the cascade reactions of enynols/diynols for the construction of carbo- and heterocycles.
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Affiliation(s)
- Shimin Jiang
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Haojie Ma
- Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Ruchun Yang
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Xian-Rong Song
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Qiang Xiao
- Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
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