1
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Guo SM, Xu P, Studer A. Meta-Selective Copper-Catalyzed C-H Arylation of Pyridines and Isoquinolines through Dearomatized Intermediates. Angew Chem Int Ed Engl 2024; 63:e202405385. [PMID: 38634294 DOI: 10.1002/anie.202405385] [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: 03/19/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/19/2024]
Abstract
C(sp2)-H functionalization offers an efficient strategy for the synthesis of various elaborated N-containing heteroarenes. Along these lines, oxazino pyridines that can be readily prepared from pyridines, have been introduced as powerful substrates in radical- and ionic-mediated meta-C-H functionalization. However, the regioselective meta-C-H arylation of pyridines remains a great challenge. Herein, a copper-catalyzed meta-selective C-H arylation of pyridines and isoquinolines through bench-stable dearomatized intermediates is reported. Electrophilic aryl-Cu(III) species, generated from readily accessible aryl I(III) reagents, enable the efficient meta-arylation of a broad range of pyridines and isoquinolines. The method also allows the meta-selective alkenylation of these heteroarenes using the corresponding alkenyl I(III)-reagents. Late-stage arylation of drug-derived pyridines and larger-scale experiments demonstrate the potential of this synthetic methodology.
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Affiliation(s)
- Shu-Min Guo
- Organisch-Chemisches Institut, Universität Münster, 48149, Münster, Germany
| | - Pengwei Xu
- Organisch-Chemisches Institut, Universität Münster, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Universität Münster, 48149, Münster, Germany
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2
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Lei X, Wang Y, Ma S, Jiao P. Purple Light-Promoted Coupling of Bromopyridines with Grignard Reagents via SET. J Org Chem 2024; 89:7148-7155. [PMID: 38718346 DOI: 10.1021/acs.joc.4c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Alkyl- and arylpyridines and 2,2'-bipyridines are conventionally prepared by Minisci reactions of pyridines and transition metal-catalyzed coupling reactions of halopyridines. Herein, purple light-promoted radical coupling reactions of 2- or 4-bromopyridines with Grignard reagents in Et2O or a mixture of Et2O and tetrahydrofuran in regular glassware without the need for a transition metal catalyst were disclosed for the first time. Methyl, primary and secondary alkyl, cycloalkyl, aryl, heteroaryl, pyridyl, and alkynyl Grignard reagents were compatible with the protocol. As a result, alkyl- and arylpyridines and 2,2'-bipyridines were easily prepared. Single electron transfer from the Grignard reagent to bromopyridine was stimulated by purple light. An electron extruded from the dimerization of the Grignard reagent worked as the catalyst. Light on/off experiments indicated that constant irradiation was required for product formation. Studies of radical clock substrates verified the involvement of a pyridyl radical from bromopyridine and the noninvolvement of an alkyl or aryl radical from the Grignard reagent. The available proof supports a photoinduced SRN mechanism for the new coupling reactions.
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Affiliation(s)
- Xingyu Lei
- College of Chemistry, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Yihan Wang
- College of Chemistry, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Shanshan Ma
- Institute of Rural Revitalization (Institute of Medicine and Health Care), Dezhou University, No. 566 West University Road, Dezhou 253023, China
| | - Peng Jiao
- College of Chemistry, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
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3
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Cao H, Cheng Q, Studer A. meta-Selective C-H Functionalization of Pyridines. Angew Chem Int Ed Engl 2023; 62:e202302941. [PMID: 37013613 DOI: 10.1002/anie.202302941] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 04/05/2023]
Abstract
The pyridine moiety is an important core structure for a variety of drugs, agrochemicals, catalysts, and functional materials. Direct functionalization of C-H bonds in pyridines is a straightforward approach to access valuable substituted pyridines. Compared to the direct ortho- and para-functionalization, meta-selective pyridine C-H functionalization is far more challenging due to the inherent electronic properties of the pyridine entity. This review summarizes currently available methods for pyridine meta-C-H functionalization using a directing group, non-directed metalation, and temporary dearomatization strategies. Recent advances in ligand control and temporary dearomatization are highlighted. We analyze the advantages as well as limitations of current techniques and hope to inspire further developments in this important area.
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Affiliation(s)
- Hui Cao
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Qiang Cheng
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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4
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Das A, Maji B. Direct C(3)5-H Polyfluoroarylation of 2-Amino/alkoxy Pyridines Enabled by a Transient and Electron-deficient Palladium Intermediate. Chemistry 2023; 29:e202301436. [PMID: 37154162 DOI: 10.1002/chem.202301436] [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: 05/05/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023]
Abstract
Herein, we present an unprecedented azine-limited C5-H polyfluoroarylation of 2-aminopyridines enabled by a transient and electron-deficient perfluoroaryl-Pd species via C-H/C-H coupling. The protocol further allows C3(5)-H polyfluoroarylation of 2-alkoxypyridines guided by sterics and electronics for the first time. The late-stage C-H functionalization of drugs, drug derivatives, and natural product derivatives and synthesis of C5-aryl drug derivatives further demonstrated the method's utility. The preliminary mechanistic studies reveal that the synergistic combination of the bulky yet electrophilic perfluoroaryl-Pd species and the partial nucleophilicity of the C5-position of 2-amino/alkoxy-pyridines is the origin of reactivity and selectivity. Importantly, the first experimental evidence for the role of diisopropyl sulfide is provided.
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Affiliation(s)
- Animesh Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
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5
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Zhou C, Liu Y, Luo Q, Zhang Y, Zhou J, Zhang H, Liu J. Microwave-accelerated cross-dehydrogenative-coupling (CDC) of N-(quinolin-8-yl)amides with acetone/acetonitrile under metal-free conditions. RSC Adv 2023; 13:21231-21235. [PMID: 37456538 PMCID: PMC10340454 DOI: 10.1039/d3ra03651k] [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: 05/31/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
A highly selective remote C(sp3)-H acetonation of N-(quinolin-8-yl)amide scaffolds at the C5-position under microwave irradiation has been developed. In the absence of a transition-metal-catalyst, benzoyl peroxide (BPO)-promoted cross-dehydrogenation coupling (CDC) of N-(quinolin-8-yl)amides with acetone/acetonitrile occurred smoothly to generate the corresponding 5-acetonated/acetonitriled N-(quinolin-8-yl)amides in good yields. The transformation is operationally simple, rapid, easily scaled-up to the gram scale, and shows a broad substrate scope.
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Affiliation(s)
- Chao Zhou
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Yunwei Liu
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Qi Luo
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Yicheng Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Jingwen Zhou
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Haoyu Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Jie Liu
- Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
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6
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Ravindra MP, Lee M, Dimova S, Steven CF, Bluntzer MTJ, Brunton VG, Hulme AN. Stretching the Bisalkyne Raman Spectral Palette Reveals a New Electrophilic Covalent Motif. Chemistry 2023; 29:e202300953. [PMID: 37014262 PMCID: PMC10946950 DOI: 10.1002/chem.202300953] [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: 03/26/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 04/05/2023]
Abstract
Small heteroaryl-diyne (Het-DY) tags with distinct vibrational frequencies, and physiologically relevant cLog P were designed for multiplexed bioorthogonal Raman imaging. Pd-Cu catalyzed coupling, combined with the use of Lei ligand, was shown to improve overall yields of the desired heterocoupled Het-DY tags, minimizing the production of homocoupled side-products. Spectral data were in agreement with the trends predicted by DFT calculations and systematic introduction of electron- rich/poor rings stretched the frequency limit of aryl-capped diynes (2209-2243 cm-1 ). The improved Log P of these Het-DY tags was evident from their diffuse distribution in cellular uptake studies and functionalizing tags with organelle markers allowed the acquisition of location-specific biological images. LC-MS- and NMR-based assays showed that some heteroaryl-capped internal alkynes are potential nucleophile traps with structure-dependent reactivity. These biocompatible Het-DY tags, equipped with covalent reactivity, open up new avenues for Raman bioorthogonal imaging.
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Affiliation(s)
- Manasa Punaha Ravindra
- School of ChemistryUniversity of EdinburghJoseph Black Building, David Brewster RoadEdinburghEH9 3FJUK
| | - Martin Lee
- Edinburgh Cancer ResearchInstitute of Genetics & CancerUniversity of EdinburghCrewe Road SouthEdinburghEH4 2XRUK
| | - Silviya Dimova
- Edinburgh Cancer ResearchInstitute of Genetics & CancerUniversity of EdinburghCrewe Road SouthEdinburghEH4 2XRUK
| | - Craig F. Steven
- School of ChemistryUniversity of EdinburghJoseph Black Building, David Brewster RoadEdinburghEH9 3FJUK
- Edinburgh Cancer ResearchInstitute of Genetics & CancerUniversity of EdinburghCrewe Road SouthEdinburghEH4 2XRUK
| | - Marie T. J. Bluntzer
- School of ChemistryUniversity of EdinburghJoseph Black Building, David Brewster RoadEdinburghEH9 3FJUK
| | - Valerie G. Brunton
- Edinburgh Cancer ResearchInstitute of Genetics & CancerUniversity of EdinburghCrewe Road SouthEdinburghEH4 2XRUK
| | - Alison N. Hulme
- School of ChemistryUniversity of EdinburghJoseph Black Building, David Brewster RoadEdinburghEH9 3FJUK
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7
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Sindhe H, Reddy MM, Rajkumar K, Kamble A, Singh A, Kumar A, Sharma S. Pyridine C(sp 2)-H bond functionalization under transition-metal and rare earth metal catalysis. Beilstein J Org Chem 2023; 19:820-863. [PMID: 37346497 PMCID: PMC10280098 DOI: 10.3762/bjoc.19.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Pyridine is a crucial heterocyclic scaffold that is widely found in organic chemistry, medicines, natural products, and functional materials. In spite of the discovery of several methods for the synthesis of functionalized pyridines or their integration into an organic molecule, new methodologies for the direct functionalization of pyridine scaffolds have been developed during the past two decades. In addition, transition-metal-catalyzed C-H functionalization and rare earth metal-catalyzed reactions have flourished over the past two decades in the development of functionalized organic molecules of concern. In this review, we discuss recent achievements in the transition-metal and rare earth metal-catalyzed C-H bond functionalization of pyridine and look into the mechanisms involved.
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Affiliation(s)
- Haritha Sindhe
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Malladi Mounika Reddy
- Department of Natural Products, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Karthikeyan Rajkumar
- Department of Natural Products, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Akshay Kamble
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Amardeep Singh
- Department of Natural Products, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Anand Kumar
- Department of Natural Products, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
| | - Satyasheel Sharma
- Department of Natural Products, National Institute of Pharmaceutical Education and Research - Ahmedabad, Gandhinagar, Gujarat, 382355, India
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8
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Chakraborty S, Biju AT. Directing Group-Free Regioselective meta-C-H Functionalization of Pyridines. Angew Chem Int Ed Engl 2023; 62:e202300049. [PMID: 36829265 DOI: 10.1002/anie.202300049] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 02/26/2023]
Abstract
The pyridine core is among the most common motifs found in pharmaceuticals and agrochemicals. Consequently, the C-H functionalization of pyridine is a prized reaction, as it can help access a broad spectrum of valuable chemicals. However, the intrinsic electronic properties of pyridines hinder their meta-C-H functionalization, requiring drastic conditions affecting functional group compatibility. A synthetic manoeuvre to overcome this challenge involves the temporary conversion of pyridines into electron-rich intermediates and subsequent regioselective electrophilic functionalization. This was recently accomplished by a ring-opening ring-closing sequence via Zincke imine intermediates by McNally and co-workers, and a dearomatization-rearomatization sequence via oxazino-pyridine intermediates by the Studer group. The mildness and simplicity of these protocols enable them to work with complex molecular setups for synthesizing natural products and bioactive molecules.
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Affiliation(s)
- Sukriyo Chakraborty
- Department of Organic Chemistry, Indian Institute of Science Bangalore, C.V. Raman Avenue, Bengaluru, 560 012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science Bangalore, C.V. Raman Avenue, Bengaluru, 560 012, India
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9
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De Novo Synthesis of Polysubstituted 3-Hydroxypyridines Via “Anti-Wacker”-Type Cyclization. Catalysts 2023. [DOI: 10.3390/catal13020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We report an efficient method to prepare polysubstituted 3-hydroxypyridines from amino acids, propargyl alcohols, and arylboronic acids. The process involves Pd(0)-catalyzed anti-selective arylative cyclizations of N-propargyl-N-tosyl-aminoaldehydes with arylboronic acids (“anti-Wacker”-type cyclization), oxidation of the resulting 5-substituted-3-hydroxy-1,2,3,6-tetrahydropyridines to 3-oxo derivatives, and elimination of p-toluenesulfinic acid. This method provides diverse polysubstituted 3-hydroxypyridines, whose hydroxy group can be further substituted by a cross-coupling reaction via a triflate.
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10
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Luo L, Tang J, Sun R, Li W, Zheng X, Yuan M, Li R, Chen H, Fu H. Direct C-H Sulfonylimination of Pyridinium Salts. Org Lett 2022; 24:2821-2825. [PMID: 35405076 DOI: 10.1021/acs.orglett.2c00725] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct pyridinium C-H sulfonylimination has been developed for the synthesis of sulfonyl iminopyridine derivatives with high efficiency. This transformation features the direct and efficient formation of a C═N bond with a high functional group tolerance under metal-free conditions. The spectroscopic properties potentially enable these sulfonyl iminopyridine compounds to be useful new emitting materials.
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Affiliation(s)
- Lihua Luo
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Juan Tang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Rui Sun
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Wenjing Li
- Xi'an Medical University, Xi'an, Shaanxi 710021, P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Maoling Yuan
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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11
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Zhang LY, Wang NX, Wu YH, Yan Z, Gao XW, Feng K, Xu BC, Xing Y, Wang PJ, Zhang Y, Gao LL. Copper-Catalyzed Aldehyde Exchanged Amidation. Org Lett 2021; 24:658-662. [PMID: 34968066 DOI: 10.1021/acs.orglett.1c04107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of bioactive amides has been the pursuit of chemists. Herein secondary amides incorporated with an aldehyde group were first generated using aldehydes and secondary amines. Various (hetero)aryl aldehydes and even aliphatic aldehydes (>40 examples) were converted into the desired products in moderate to excellent yields (up to 89%). A plausible mechanism involving a Cu(I/II/III) catalytic cycle combined with radical rearrangement was proposed and confirmed with four key intermediates detected by high-resolution mass spectrometry.
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Affiliation(s)
- Lei-Yang Zhang
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Nai-Xing Wang
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Yue-Hua Wu
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhan Yan
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Xue-Wang Gao
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Ke Feng
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Bao-Cai Xu
- School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Yalan Xing
- Department of Chemistry, William Paterson University of New Jersey,Wayne, New Jersey 07470, United States
| | - Pei-Jia Wang
- Baotou Rare Earth Research and Development Center, Chinese Academy of Sciences, Baotou 014010, China
| | - Yao Zhang
- Baotou Rare Earth Research and Development Center, Chinese Academy of Sciences, Baotou 014010, China
| | - Le-Le Gao
- Baotou Rare Earth Research and Development Center, Chinese Academy of Sciences, Baotou 014010, China
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12
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He L, Zhu Y, Xu Y. Copper‐Catalyzed Ligand‐Free Remote C−H Bond Amidation of 8‐Amidoquinolines with
N
‐Fluorobenzenesulfonimide. ChemistrySelect 2021. [DOI: 10.1002/slct.202102981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Li He
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Yihang Zhu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Yongjun Xu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
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13
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Sinha SK, Guin S, Maiti S, Biswas JP, Porey S, Maiti D. Toolbox for Distal C-H Bond Functionalizations in Organic Molecules. Chem Rev 2021; 122:5682-5841. [PMID: 34662117 DOI: 10.1021/acs.chemrev.1c00220] [Citation(s) in RCA: 154] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition metal catalyzed C-H activation has developed a contemporary approach to the omnipresent area of retrosynthetic disconnection. Scientific researchers have been tempted to take the help of this methodology to plan their synthetic discourses. This paradigm shift has helped in the development of industrial units as well, making the synthesis of natural products and pharmaceutical drugs step-economical. In the vast zone of C-H bond activation, the functionalization of proximal C-H bonds has gained utmost popularity. Unlike the activation of proximal C-H bonds, the distal C-H functionalization is more strenuous and requires distinctly specialized techniques. In this review, we have compiled various methods adopted to functionalize distal C-H bonds, mechanistic insights within each of these procedures, and the scope of the methodology. With this review, we give a complete overview of the expeditious progress the distal C-H activation has made in the field of synthetic organic chemistry while also highlighting its pitfalls, thus leaving the field open for further synthetic modifications.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sudip Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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14
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Corio A, Gravier-Pelletier C, Busca P. Regioselective Functionalization of Quinolines through C-H Activation: A Comprehensive Review. Molecules 2021; 26:5467. [PMID: 34576936 PMCID: PMC8466797 DOI: 10.3390/molecules26185467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Quinoline is a versatile heterocycle that is part of numerous natural products and countless drugs. During the last decades, this scaffold also became widely used as ligand in organometallic catalysis. Therefore, access to functionalized quinolines is of great importance and continuous efforts have been made to develop efficient and regioselective synthetic methods. In this regard, C-H functionalization through transition metal catalysis, which is nowadays the Graal of organic green chemistry, represents the most attractive strategy. We aim herein at providing a comprehensive review of methods that allow site-selective metal-catalyzed C-H functionalization of quinolines, or their quinoline N-oxides counterparts, with a specific focus on their scope and limitations, as well as mechanistic aspects if that accounts for the selectivity.
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Affiliation(s)
| | | | - Patricia Busca
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France; (A.C.); (C.G.-P.)
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15
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Nale SD, Aslam M, Lee YR. Installation of Diverse Succinimides at C‐8 Position of Quinoline
N
‐Oxides via Rhodium(III)‐Catalyzed C−H Functionalization. ChemistrySelect 2021. [DOI: 10.1002/slct.202102832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sagar D. Nale
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Mohammad Aslam
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
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16
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Shi Y, Ma H, Shao J, Deng C. Theoretical studies on the mechanism of Pd 2+-catalyzed regioselective C-H alkylation of indole with MesICH 2CF 3OTf. J Mol Model 2021; 27:150. [PMID: 33945013 DOI: 10.1007/s00894-021-04773-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/21/2021] [Indexed: 11/26/2022]
Abstract
The reaction mechanism of Pd2+-catalyzed regioselective C-H alkylation of indole with MesICH2CF3OTf has been investigated by the density functional theory calculations. The reaction mechanism mainly contains four steps: C-H activation, oxidative addition, reductive elimination, and ligands substitution. From our calculations, we find that the C-H activation step was realized by the acetate anion (-OAc) assisted concerted metalation deprotonation (CMD) process and the transition state of C-H activation process is a square planar configuration. Moreover, the calculation results suggest that the regioselectivity of C-H bond alkylation of indole with MesICH2CF3OTf can be ascribed to the different stability of the CMD transition states in C-H activation step and the relative stabilities of deprotonated intermediates.
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Affiliation(s)
- Yao Shi
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Hongsheng Ma
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jiaxuan Shao
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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17
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Niu PP, Liu PY, Meng YN, Yu F, He YP. MIA-Directed 2-Pyridione-Enabled Selective Ortho-C–H Arylation of Phenylalanine: A Mechanistic Study. J Org Chem 2021; 86:3096-3106. [PMID: 33442983 DOI: 10.1021/acs.joc.0c02872] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Peng-Peng Niu
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Dandong Road West 1, Fushun 113001, China
| | - Peng-Yu Liu
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Dandong Road West 1, Fushun 113001, China
| | - Yue-Ning Meng
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Dandong Road West 1, Fushun 113001, China
| | - Fang Yu
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Dandong Road West 1, Fushun 113001, China
| | - Yu-Peng He
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Dandong Road West 1, Fushun 113001, China
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18
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Doraghi F, Kianmehr E, Foroumadi A. Metal-free regioselective C5-cyanoalkylation of the 8-aminoquinolineamides/sulfonamides via oxidative cross-dehydrogenative coupling with alkylnitriles. Org Chem Front 2021. [DOI: 10.1039/d1qo00570g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A practical, versatile and Metal-free regioselective C5-cyanoalkylation of the 8-aminoquinolineamides/sulfonamides with acetonitrile has been described.
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Affiliation(s)
- Fatemeh Doraghi
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran
| | - Ebrahim Kianmehr
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran
| | - Alireza Foroumadi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
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19
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Haines BE, Musaev DG. Hydrogen‐Bonding as a Factor to Determine the Regioselectivity for Pd‐mediated C−H Activation of Pyridine. ChemCatChem 2020. [DOI: 10.1002/cctc.202001658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Djamaladdin G. Musaev
- Ch. L. Emerson Center for Scientific Computation Department of Chemistry Emory University Atlanta GA 30322 USA
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20
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Varun BV, Vaithegi K, Yi S, Park SB. Nature-inspired remodeling of (aza)indoles to meta-aminoaryl nicotinates for late-stage conjugation of vitamin B 3 to (hetero)arylamines. Nat Commun 2020; 11:6308. [PMID: 33298909 PMCID: PMC7726565 DOI: 10.1038/s41467-020-19610-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/14/2020] [Indexed: 12/16/2022] Open
Abstract
Despite the availability of numerous routes to substituted nicotinates based on the Bohlmann–Rahtz pyridine synthesis, the existing methods have several limitations, such as the inevitable ortho-substitutions and the inability to conjugate vitamin B3 to other pharmaceutical agents. Inspired by the biosynthesis of nicotinic acid (a form of vitamin B3) from tryptophan, we herein report the development of a strategy for the synthesis of meta-aminoaryl nicotinates from 3-formyl(aza)indoles. Our strategy is mechanistically different from the reported routes and involves the transformation of (aza)indole scaffolds into substituted meta-aminobiaryl scaffolds via Aldol-type addition and intramolecular cyclization followed by C–N bond cleavage and re-aromatization. Unlike previous synthetic routes, this biomimetic method utilizes propiolates as enamine precursors and thus allows access to ortho-unsubstituted nicotinates. In addition, the synthetic feasibility toward the halo-/boronic ester-substituted aminobiaryls clearly differentiates the present strategy from other cross-coupling strategies. Most importantly, our method enables the late-stage conjugation of bioactive (hetero)arylamines with nicotinates and nicotinamides and allows access to the previously unexplored chemical space for biomedical research. Vitamin B3 derivatives display a range of biological activities. Here, the authors report the synthesis of meta-aminoaryl nicotinates, derivatives of vitamin B3, and their late-stage conjugation with (hetero)arylamines, ultimately expanding the chemical space for biomedical research.
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Affiliation(s)
- Begur Vasanthkumar Varun
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kannan Vaithegi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sihyeong Yi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
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21
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Che YY, Yue Y, Lin LZ, Pei B, Deng X, Feng C. Palladium-Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts. Angew Chem Int Ed Engl 2020; 59:16414-16419. [PMID: 32533596 DOI: 10.1002/anie.202006724] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/30/2020] [Indexed: 12/11/2022]
Abstract
Herein, we report a highly efficient and practical method for pyridine-derived heterobiaryl synthesis through palladium-catalyzed electrophilic functionalization of easily available pyridine-derived quaternary phosphonium salts. The nice generality of this reaction was goes beyond arylation, enabling facile incorporation of diverse carbon-based fragments, including alkenyl, alkynyl, and also allyl fragments, onto the pyridine core. Notably, the silver salt additive is revealed to be of vital importance for the success of this transformation and its pivotal role as transmetallation mediator, which guarantees a smooth transfer of pyridyl group to palladium intermediate, is also described.
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Affiliation(s)
- Yuan-Yuan Che
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Yanni Yue
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Ling-Zhi Lin
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Bingbing Pei
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Xuezu Deng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
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22
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Che Y, Yue Y, Lin L, Pei B, Deng X, Feng C. Palladium‐Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006724] [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)
- Yuan‐Yuan Che
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Yanni Yue
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Ling‐Zhi Lin
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Bingbing Pei
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xuezu Deng
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF)Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
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23
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Shaughnessy KH. Monodentate Trialkylphosphines: Privileged Ligands in Metal-catalyzed Crosscoupling Reactions. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200211114540] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phosphines are widely used ligands in transition metal-catalyzed reactions.
Arylphosphines, such as triphenylphosphine, were among the first phosphines to show
broad utility in catalysis. Beginning in the late 1990s, sterically demanding and electronrich
trialkylphosphines began to receive attention as supporting ligands. These ligands
were found to be particularly effective at promoting oxidative addition in cross-coupling
of aryl halides. With electron-rich, sterically demanding ligands, such as tri-tertbutylphosphine,
coupling of aryl bromides could be achieved at room temperature. More
importantly, the less reactive, but more broadly available, aryl chlorides became accessible
substrates. Tri-tert-butylphosphine has become a privileged ligand that has found application
in a wide range of late transition-metal catalyzed coupling reactions. This success
has led to the use of numerous monodentate trialkylphosphines in cross-coupling reactions. This review
will discuss the general properties and features of monodentate trialkylphosphines and their application in
cross-coupling reactions of C–X and C–H bonds.
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Affiliation(s)
- Kevin H. Shaughnessy
- Department of Chemistry & Biochemistry, The University of Alabama, Box 870336, Tuscaloosa, AL, 35487-0336, United States
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24
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Zhu L, Sheng X, Li Y, Lu D, Qiu R, Kambe N. Nickel-Catalyzed Remote C4–H Arylation of 8-Aminoquinolines. Org Lett 2019; 21:6785-6789. [DOI: 10.1021/acs.orglett.9b02403] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Longzhi Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Xinghao Sheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - You Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Dong Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Nobuaki Kambe
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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25
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Dong Y, Zhang X, Chen J, Zou W, Lin S, Xu H. Switching the site-selectivity of C-H activation in aryl sulfonamides containing strongly coordinating N-heterocycles. Chem Sci 2019; 10:8744-8751. [PMID: 31762973 PMCID: PMC6857669 DOI: 10.1039/c9sc03691a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 08/12/2019] [Indexed: 11/21/2022] Open
Abstract
The limitations of arene C-H functionalization of aryl sulfonamides containing strongly coordinating N-heterocycles were overcome using a Rh(iii) catalyst. The site-selectivity of C-H carbenoid functionalization at the ortho position relative to either the sulfonamide or N-heterocycle directing groups was elegantly switched using solvents of different polarities and different additive concentrations. Importantly, sulfonamide-group-directed ortho-C-H carbenoid functionalization tolerated strongly coordinating N-heterocycles, including pyridine, pyrrole, thiazole, pyrimidine, and pyrazine. Density functional theory (DFT) calculations were performed to rationalize the reaction mechanisms and the influence of reaction polarity.
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Affiliation(s)
- Yi Dong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - XuePeng Zhang
- Lab of Computational and Drug Design , Peking University Shenzhen Graduate School , Shenzhen 518055 , China
| | - Jiajing Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Wenxing Zou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Songwen Lin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Heng Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
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26
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Ma B, Lu F, Yang H, Gu X, Li Z, Li R, Pei H, Luo D, Zhang H, Lei A. Visible Light Mediated External Oxidant Free Selective C5 Bromination of 8‐Aminoquinoline Amides under Ambient Conditions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900293] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bin Ma
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Fangling Lu
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Hongmei Yang
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Xin Gu
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Zhen Li
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Ru Li
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Hongqiao Pei
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Dan Luo
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
| | - Heng Zhang
- College of Chemistry and Molecular Sciences, the Institute forAdvanced Studies (IAS)Wuhan University Wuhan, Hubei 430072 P. R. China
| | - Aiwen Lei
- National Research Center for Carbohydrate SynthesisJiangxiNormal University Nanchang 330022, Jiangxi P. R. China
- College of Chemistry and Molecular Sciences, the Institute forAdvanced Studies (IAS)Wuhan University Wuhan, Hubei 430072 P. R. China
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27
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Xu F, Li W, Shuai W, Yang L, Bi Y, Ma C, Yao H, Xu S, Zhu Z, Xu J. Design, synthesis and biological evaluation of pyridine-chalcone derivatives as novel microtubule-destabilizing agents. Eur J Med Chem 2019; 173:1-14. [DOI: 10.1016/j.ejmech.2019.04.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/10/2019] [Accepted: 04/02/2019] [Indexed: 01/01/2023]
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28
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Yang L, Uemura N, Nakao Y. meta-Selective C–H Borylation of Benzamides and Pyridines by an Iridium–Lewis Acid Bifunctional Catalyst. J Am Chem Soc 2019; 141:7972-7979. [DOI: 10.1021/jacs.9b03138] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Lichen Yang
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Nao Uemura
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yoshiaki Nakao
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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29
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Shen Z, Huang H, Zhu C, Warratz S, Ackermann L. MnCl 2-Catalyzed C-H Alkylation on Azine Heterocycles. Org Lett 2019; 21:571-574. [PMID: 30604972 DOI: 10.1021/acs.orglett.8b03924] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Low-valent manganese-catalyzed C-H alkylation of pyridine derivatives with both primary and challenging secondary alkyl halides was established by amide assistance. The strategy provided expedient access to alkylated pyridines with wide functional group tolerance and ample scope through weak chelation. Mechanistic studies provided strong support for a rate-determining C-H activation and a SET-type C-X scission.
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Affiliation(s)
- Zhigao Shen
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Huawen Huang
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Cuiju Zhu
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität , Tammannstraße 2 , 37077 Göttingen , Germany
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30
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Song Z, Wang G, Li W, Li S. Innate pharmacophore assisted selective C–H functionalization to therapeutically important nicotinamides. Org Chem Front 2019. [DOI: 10.1039/c9qo00170k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tunable and regioselective C–H functionalization of nicotinamides was accomplished assisted by the innate pharmacophore NHOxa.
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Affiliation(s)
- Zehua Song
- Department of Pesticide Science
- College of Plant Protection
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Guotong Wang
- Department of Pesticide Science
- College of Plant Protection
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Wei Li
- Department of Pesticide Science
- College of Plant Protection
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Shengkun Li
- Department of Pesticide Science
- College of Plant Protection
- Nanjing Agricultural University
- Nanjing 210095
- China
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31
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Hemavathi B, Kesavan AV, Chandrashekara G, Ramamurthy PC, Pai RK, Ahipa T, Geetha Balakrishna R. Polycondensation of thiophene-flanked cyanopyridine and carbazole via direct arylation polymerization for solar cell application. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Fu J, Gao Y, Qi X, Jiang C. Synthesis of Polysubstituted Pyridines and Indoles by a Palladium-Catalyzed Catellani-type Alkylation-Alkenylation Sequence. ChemistrySelect 2018. [DOI: 10.1002/slct.201801890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jingjing Fu
- School of Chemical Engineering; Nanjing University of Science and Technology Nanjing; Jiangsu 210094 China
| | - Yadong Gao
- School of Chemical Engineering; Nanjing University of Science and Technology Nanjing; Jiangsu 210094 China
- National Institute of Biological Sciences; Beijing No. 7 Science Park Road, Zhongguancun Life Science Park Beijing 102206 China
| | - Xiangbing Qi
- National Institute of Biological Sciences; Beijing No. 7 Science Park Road, Zhongguancun Life Science Park Beijing 102206 China
| | - Chao Jiang
- School of Chemical Engineering; Nanjing University of Science and Technology Nanjing; Jiangsu 210094 China
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33
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Yang QL, Wang XY, Lu JY, Zhang LP, Fang P, Mei TS. Copper-Catalyzed Electrochemical C-H Amination of Arenes with Secondary Amines. J Am Chem Soc 2018; 140:11487-11494. [PMID: 30165030 DOI: 10.1021/jacs.8b07380] [Citation(s) in RCA: 223] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electrochemical oxidation represents an environmentally friendly solution to conventional methods that require caustic stoichiometric chemical oxidants. However, C-H functionalizations merging transition-metal catalysis and electrochemical techniques are, to date, largely confined to the use of precious metals and divided cells. Herein, we report the first examples of copper-catalyzed electrochemical C-H aminations of arenes at room temperature using undivided electrochemical cells, thereby providing a practical solution for the construction of arylamines. The use of n-Bu4NI as a redox mediator is crucial for this transformation. On the basis of mechanistic studies including kinetic profiles, isotope effects, cyclic voltammetric analyses, and radical inhibition experiments, the reaction appears to proceed via a single-electron-transfer (SET) process, and a high valent Cu(III) species is likely involved. These findings provide a new avenue for transition-metal-catalyzed electrochemical C-H functionalization reactions using redox mediators.
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Affiliation(s)
- Qi-Liang Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China.,Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Xiang-Yang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Jia-Yan Lu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Li-Pu Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Ping Fang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Tian-Sheng Mei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
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34
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Bentley KW, Dummit KA, Van Humbeck JF. A highly site-selective radical sp 3 C-H amination of azaheterocycles. Chem Sci 2018; 9:6440-6445. [PMID: 30310574 PMCID: PMC6115697 DOI: 10.1039/c8sc00590g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 06/20/2018] [Indexed: 12/14/2022] Open
Abstract
This report describes the development of a novel C-H amination strategy using both a Cu(ii) Lewis acid and an organic hydrogen atom transfer catalyst to activate benzylic C-H bonds adjacent to aromatic N-heterocycles. This simple methodology demonstrates very high selectivity towards azaheterocycles without using exogenous directing groups and affords excellent site selectivity in substrates with more than one reactive position. A wide range of heterocyclic structures not compatible with previously reported catalytic systems have proven to be amenable to this approach. Mechanistic investigations strongly support a radical-mediated H-atom abstraction, which explains the observed contrast to known closed-shell Lewis acid catalyzed processes.
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Affiliation(s)
- Keith W Bentley
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge MA 02139 , USA
| | - Krysta A Dummit
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge MA 02139 , USA
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35
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Affiliation(s)
- Bhuttu Khan
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Himangsu Sekhar Dutta
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Dipankar Koley
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
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36
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Zhu C, Oliveira JCA, Shen Z, Huang H, Ackermann L. Manganese(II/III/I)-Catalyzed C–H Arylations in Continuous Flow. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00166] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Cuiju Zhu
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - João C. A. Oliveira
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Zhigao Shen
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Huawen Huang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
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37
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Yin DW, Liu G. Palladium-Catalyzed Regioselective C–H Functionalization of Arenes Substituted by Two N-Heterocycles and Application in Late-Stage Functionalization. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00322] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Da-Wei Yin
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Handian District, Beijing 100084, P.R. China
| | - Gang Liu
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Handian District, Beijing 100084, P.R. China
- School of Pharmaceutical Sciences, Tsinghua University, Handian District, Beijing 100084, P.R. China
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38
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Deng C, Zhang JX, Lin Z. Theoretical Studies on Pd(II)-Catalyzed meta-Selective C–H Bond Arylation of Arenes. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03588] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chao Deng
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
- Jiangsu
Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People’s Republic of China
| | - Jing-Xuan Zhang
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Zhenyang Lin
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
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39
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Swamy T, Subba Reddy BV, Grée R, Ravinder V. Substrate-Directed C-H Functionalization of 2-Aryl Pyridines by Transition Metal Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201702349] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tallapally Swamy
- Department of Chemistry; Kakatiya University; Warangal- 506009 India
| | - Basi V. Subba Reddy
- Centre for Semio Chemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
| | - René Grée
- University of Rennes 1; Institute for Chemical Sciences in Renees, CNRS UMR 6226; Avenue du General Leclerc 35042 Rennes-Cedex France
| | - Vadde Ravinder
- Department of Chemistry; Kakatiya University; Warangal- 506009 India
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40
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Zhao L, Li P, Xie X, Wang L. Selective remote C–H trifluoromethylation of aminoquinolines with CF3SO2Na under visible light irradiation in the absence of an external photocatalyst. Org Chem Front 2018. [DOI: 10.1039/c8qo00229k] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A selective remote C–H trifluoromethylation of aminoquinolines with sodium trifluoromethanesulfinate (CF3SO2Na) under visible-light irradiation without an external photocatalyst was developed.
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Affiliation(s)
- Lulu Zhao
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Pinhua Li
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Xiaoyu Xie
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Lei Wang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P. R. China
- State Key Laboratory of Organometallic Chemistry
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41
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Dutta HS, Khan B, Khan AA, Raziullah, Ahmad A, Kant R, Koley D. Metal-Free, Oxidant-Free, Site-Selective C−H Halogenations to Aminoquinolines at Room Temperature using N
-Halosaccharins. ChemistrySelect 2017. [DOI: 10.1002/slct.201701649] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Himangsu Sekhar Dutta
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Bhuttu Khan
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Afsar Ali Khan
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Raziullah
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Ashfaq Ahmad
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Ruchir Kant
- Molecular and structural Biology Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Dipankar Koley
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
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42
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Kuzman P, Požgan F, Meden A, Svete J, Štefane B. Synthesis and Reactivity of 2-Arylquinazoline Halidoruthenacycles in Arylation Reactions. ChemCatChem 2017. [DOI: 10.1002/cctc.201700494] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Petra Kuzman
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113, SI- 1000 Ljubljana Slovenia
| | - Franc Požgan
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113, SI- 1000 Ljubljana Slovenia
| | - Anton Meden
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113, SI- 1000 Ljubljana Slovenia
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113, SI- 1000 Ljubljana Slovenia
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113, SI- 1000 Ljubljana Slovenia
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43
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Peng Z, Yu Z, Li T, Li N, Wang Y, Song L, Jiang C. Catalytic Regioselective C–H Acetoxylation of Arenes Using 4,6-Dimethoxy-1,3,5-triazin-2-yloxy as a Removable/Modifiable Directing Group. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00314] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Zhihua Peng
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Zhi Yu
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Tian Li
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Na Li
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Yilei Wang
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Linhua Song
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
| | - Cuiyu Jiang
- Department of Chemistry, China University of Petroleum, Qingdao 266580, People’s Republic of China
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44
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Li Y, Zhu L, Cao X, Au CT, Qiu R, Yin SF. Metal-free C5-H Bromination of Quinolines for One-pot C−X (X=C, O, S) Bond Formations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700391] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- You Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 People's Republic of China
| | - Longzhi Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 People's Republic of China
| | - Xin Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 People's Republic of China
| | - Chak-Tong Au
- College of Chemistry and Chemical Engineering; Hunan Institute of Engineering; Xiangtan 411104 People's Republic of China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 People's Republic of China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410082 People's Republic of China
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45
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Shang M, Wang MM, Saint-Denis TG, Li MH, Dai HX, Yu JQ. Copper-Mediated Late-Stage Functionalization of Heterocycle-Containing Molecules. Angew Chem Int Ed Engl 2017; 56:5317-5321. [PMID: 28393446 DOI: 10.1002/anie.201611287] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/23/2017] [Indexed: 12/27/2022]
Abstract
One long-standing issue in directed C-H functionalization is that either nitrogen or sulfur atoms present in heterocyclic substrates may bind preferentially to a transition-metal catalyst rather than to the desired directing group. This competitive binding has largely hindered the application of C-H functionalization in late-stage heterocycle drug discovery. Reported here is the use of an oxazoline-based directing group capable of overriding the poisoning effect of a wide range of heterocycle substrates. The potential use of this directing group in pharmaceutical drug discovery is illustrated by diversification of Telmisartan (an antagonist for the angiotensin II receptor) through copper-mediated C-H amination, hydroxylation, thiolation, arylation, and trifluoromethylation.
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Affiliation(s)
- Ming Shang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 LingLing Road, Shanghai, 200032, China
| | - Ming-Ming Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 LingLing Road, Shanghai, 200032, China
| | - Tyler G Saint-Denis
- The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Ming-Hong Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 LingLing Road, Shanghai, 200032, China
| | - Hui-Xiong Dai
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 LingLing Road, Shanghai, 200032, China
| | - Jin-Quan Yu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 LingLing Road, Shanghai, 200032, China.,The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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46
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Shang M, Wang M, Saint‐Denis TG, Li M, Dai H, Yu J. Copper‐Mediated Late‐Stage Functionalization of Heterocycle‐Containing Molecules. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611287] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Ming Shang
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 LingLing Road Shanghai 200032 China
| | - Ming‐Ming Wang
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 LingLing Road Shanghai 200032 China
| | - Tyler G. Saint‐Denis
- The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Ming‐Hong Li
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 LingLing Road Shanghai 200032 China
| | - Hui‐Xiong Dai
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 LingLing Road Shanghai 200032 China
| | - Jin‐Quan Yu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 LingLing Road Shanghai 200032 China
- The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
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47
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Zeng Y, Zhang C, Yin C, Sun M, Fu H, Zheng X, Yuan M, Li R, Chen H. Direct C–H Functionalization of Pyridine via a Transient Activator Strategy: Synthesis of 2,6-Diarylpyridines. Org Lett 2017; 19:1970-1973. [DOI: 10.1021/acs.orglett.7b00498] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Chunchun Zhang
- Analytical
and Testing Center, Sichuan University, Chengdu 610064, P. R. China
| | - Changzhen Yin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Maoshen Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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48
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Wang G, Cao J, Gao L, Chen W, Huang W, Cheng X, Li S. Metal-Free Synthesis of C-4 Substituted Pyridine Derivatives Using Pyridine-boryl Radicals via a Radical Addition/Coupling Mechanism: A Combined Computational and Experimental Study. J Am Chem Soc 2017; 139:3904-3910. [PMID: 28212014 DOI: 10.1021/jacs.7b00823] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Density functional theory investigations revealed that the pyridine-boryl radical generated in situ using 4-cyanopyridine and bis(pinacolato)diboron could be used as a bifunctional "reagent", which serves as not only a pyridine precursor but also a boryl radical. With the unique reactivity of such radicals, 4-substituted pyridine derivatives could be synthesized using α,β-unsaturated ketones and 4-cyanopyridine via a novel radical addition/C-C coupling mechanism. Several controlled experiments were conducted to provide supportive evidence for the proposed mechanism. In addition to enones, the scope could be extended to a wide range of boryl radical acceptors, including various aldehydes and ketones, aryl imines and alkynones. Lastly, this transformation was applied in the late-stage modification of a complicated pharmaceutical molecule.
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Affiliation(s)
- Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
| | - Jia Cao
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China.,College of Chemistry and Chemical engineering, Yan'an University , Yan'an 716000, P. R. China
| | - Liuzhou Gao
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
| | - Wenxin Chen
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Material, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
| | - Wenhao Huang
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Material, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
| | - Xu Cheng
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Material, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University , Nankai P. R. China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
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49
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MacLeod KC, Lewis RA, DeRosha DE, Mercado BQ, Holland PL. C-H and C-N Activation at Redox-Active Pyridine Complexes of Iron. Angew Chem Int Ed Engl 2017; 56:1069-1072. [PMID: 28000416 PMCID: PMC5266524 DOI: 10.1002/anie.201610679] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Indexed: 11/06/2022]
Abstract
Pyridine activation by inexpensive iron catalysts has great utility, but the steps through which iron species can break the strong (105-111 kcal mol-1 ) C-H bonds of pyridine substrates are unknown. In this work, we report the rapid room-temperature cleavage of C-H bonds in pyridine, 4-tert-butylpyridine, and 2-phenylpyridine by an iron(I) species, to give well-characterized iron(II) products. In addition, 4-dimethylaminopyridine (DMAP) undergoes room-temperature C-N bond cleavage, which forms a dimethylamidoiron(II) complex and a pyridyl-bridged tetrairon(II) square. These facile bond-cleaving reactions are proposed to occur through intermediates having a two-electron reduced pyridine that bridges two iron centers. Thus, the redox non-innocence of the pyridine can play a key role in enabling high regioselectivity for difficult reactions.
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Affiliation(s)
- K Cory MacLeod
- Department of Chemistry, Yale University, New Haven, CT, 06520, USA
| | - Richard A Lewis
- Department of Chemistry, Yale University, New Haven, CT, 06520, USA
| | - Daniel E DeRosha
- Department of Chemistry, Yale University, New Haven, CT, 06520, USA
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50
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Ruiz S, Carrera C, Villuendas P, Urriolabeitia EP. Ru-Catalysed synthesis of fused heterocycle-pyridinones and -pyrones. Org Biomol Chem 2017; 15:8904-8913. [DOI: 10.1039/c7ob01497j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Heterocycle-pyridinones and heterocycle-pyranones have been prepared by Ru-catalysed oxidative coupling of N-unprotected primary heterocycle-amides and heterocycle-carboxylic acids with internal alkynes.
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Affiliation(s)
- S. Ruiz
- Instituto de Síntesis Química y Catálisis Homogénea
- CSIC-Universidad de Zaragoza
- E-50009 Zaragoza
- Spain
| | - C. Carrera
- Instituto de Síntesis Química y Catálisis Homogénea
- CSIC-Universidad de Zaragoza
- E-50009 Zaragoza
- Spain
| | - P. Villuendas
- Instituto de Síntesis Química y Catálisis Homogénea
- CSIC-Universidad de Zaragoza
- E-50009 Zaragoza
- Spain
| | - E. P. Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea
- CSIC-Universidad de Zaragoza
- E-50009 Zaragoza
- Spain
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