51
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Wu Q, Gao P, Yuan Y. Rhodium‐Catalyzed Selective C−H Alkenylation of Indole at C4 Position. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Qingyi Wu
- College of Chemistry and Chemical Engineering Yangzhou University 88 Daxue South Road Yangzhou City Jiangsu Province P. R. China
| | - Pan Gao
- College of Chemistry and Chemical Engineering Yangzhou University 88 Daxue South Road Yangzhou City Jiangsu Province P. R. China
| | - Yu Yuan
- College of Chemistry and Chemical Engineering Yangzhou University 88 Daxue South Road Yangzhou City Jiangsu Province P. R. China
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52
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Wang D, Li M, Chen X, Wang M, Liang Y, Zhao Y, Houk KN, Shi Z. Palladium-Catalyzed Silacyclization of (Hetero)Arenes with a Tetrasilane Reagent through Twofold C-H Activation. Angew Chem Int Ed Engl 2021; 60:7066-7071. [PMID: 33377224 DOI: 10.1002/anie.202015117] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/12/2020] [Indexed: 01/17/2023]
Abstract
The use of an operationally convenient and stable silicon reagent (octamethyl-1,4-dioxacyclohexasilane, ODCS) for the selective silacyclization of (hetero)arenes via twofold C-H activation is reported. This method is compatible with N-containing heteroarenes such as indoles and carbazoles of varying complexity. The ODCS reagent can also be utilized for silacyclization of other types of substrates, including tertiary phosphines and aryl halides. A series of mechanistic experiments and density functional theory (DFT) calculations were used to investigate the preferred pathway for this twofold C-H activation process.
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Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Mingjie Li
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
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53
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Wang D, Li M, Chen X, Wang M, Liang Y, Zhao Y, Houk KN, Shi Z. Palladium‐Catalyzed Silacyclization of (Hetero)Arenes with a Tetrasilane Reagent through Twofold C−H Activation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Mingjie Li
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
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54
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Peng W, Liu Q, Yin F, Shi C, Ji L, Qu L, Wang C, Luo H, Kong L, Wang X. Rhodium(iii) catalyzed olefination and deuteration of tetrahydrocarbazole. RSC Adv 2021; 11:8356-8361. [PMID: 35423333 PMCID: PMC8698316 DOI: 10.1039/d1ra00236h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 01/25/2021] [Indexed: 01/24/2023] Open
Abstract
The rhodium-catalyzed olefination and deuteration of tetrahydrocarbazoles in water with the aid of an N,N-dimethylcarbamoyl-protected group is presented. This olefination method features a broad substrate scope, good functional-group tolerance, and high efficiency in water. Practical applications of the protocol are illustrated by the synthesis of various evodiamine derivatives. As such, this environmentally friendly approach to directly modify natural products will attract much attention in academic and industrial research.
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Affiliation(s)
- Wan Peng
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Qiaohong Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Fucheng Yin
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Cunjian Shi
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Limei Ji
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Lailiang Qu
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Cheng Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Heng Luo
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Lingyi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
| | - Xiaobing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University 24 Tong Jia Xiang Nanjing 210009 People's Republic of China +86-25-83271405 +86-25-83271405
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55
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Zhao K, Du Y, Peng Q, Yu WH, Wang BQ, Feng C, Xiang SK. Regiodivergent C-H Arylation of Triphenylene Derivatives Controlled by Electronic Effects of Diaryliodonium Salts. J Org Chem 2021; 86:2986-2997. [PMID: 33481590 DOI: 10.1021/acs.joc.0c02900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A regiodivergent C-H arylation of triphenylene derivatives with diaryliodonium salts was developed. The regiodivergence was controlled by electronic effects of diaryliodonium salts. When the aryl(mesityl)iodonium salts bearing strong electron-donating groups at the para-position of aryl groups were used, the arylation reactions occurred ortho to amide groups. However, if the aryl(mesityl)iodonium salts bearing electron-withdrawing groups or weak electron-donating groups at the para-position of aryl groups were utilized, the arylation reactions occurred meta to amide groups.
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Affiliation(s)
- Ke Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Yu Du
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Qiong Peng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Wen-Hao Yu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Chun Feng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Shi-Kai Xiang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
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56
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Wang Z, Wang C. Manganese/NaOPh co-catalyzed C2-selective C–H conjugate addition of indoles to α,β-unsaturated carbonyls. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.01.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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57
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Wang D, Chen X, Wong JJ, Jin L, Li M, Zhao Y, Houk KN, Shi Z. Phosphorus(III)-assisted regioselective C-H silylation of heteroarenes. Nat Commun 2021; 12:524. [PMID: 33483484 PMCID: PMC7822902 DOI: 10.1038/s41467-020-20531-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 11/24/2020] [Indexed: 01/19/2023] Open
Abstract
Heteroarenes containing carbon-silicon (C-Si) bonds are important building blocks that play an important role in the construction of natural products, pharmaceuticals, and organic materials. In this context, the C-H silylation of heteroarenes is a topic of intense interest. Indole C-H silylation can preferentially occur at the nucleophilic C3 and C2 position (pyrrole core), while accessing the C4-C7 positions (benzene core) of the indole remains highly challenging. Here, we show a general strategy for the regioselective C7-H silylation of indole derivatives. Mainly, the regioselectivity is determined by strong coordination of the palladium catalyst with phosphorus (III) directing group. Using this expedient synthetic strategy, the diverse C7-silylated indoles are synthesized effectively which exhibits the broad functional group compatibility. Moreover, this protocol also been extended to other heteroarenes such as carbazoles. The obtained silylated indoles have been employed in various transformations to enable the corresponding differently functionalized indole derivatives. Significantly, a cyclopalladated intermediate is successfully synthesized to test the hypothesis about the P(III)-directed C-H metalation event. A series of mechanistic experiments and density functional theory (M06-2X) calculations has shown the preferred pathway of this directed C-H silylation process.
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Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jonathan J Wong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Mingjie Li
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
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58
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Deng Y, You S, Ruan M, Wang Y, Chen Z, Yang G, Gao M. Electrochemical Regioselective Phosphorylation of Nitrogen‐Containing Heterocycles and Related Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202000997] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yong Deng
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Shiqi You
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Mengyao Ruan
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Ying Wang
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Zuxing Chen
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Guichun Yang
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
| | - Meng Gao
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering Hubei University Wuhan 430062 People's Republic of China
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59
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Cheng Y, Yu S, He Y, An G, Li G, Yang Z. C4-arylation and domino C4-arylation/3,2-carbonyl migration of indoles by tuning Pd catalytic modes: Pd(i)-Pd(ii) catalysis vs. Pd(ii) catalysis. Chem Sci 2021; 12:3216-3225. [PMID: 34164090 PMCID: PMC8179361 DOI: 10.1039/d0sc05409g] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/07/2021] [Indexed: 12/14/2022] Open
Abstract
Efficient C4-arylation and domino C4-arylation/3,2-carbonyl migration of indoles have been developed. The former route enables C4-arylation in a highly efficient and mild manner and the latter route provides an alternative straightforward protocol for synthesis of C2/C4 disubstituted indoles. The mechanism studies imply that the different reaction pathways were tuned by the distinct acid additives, which led to either the Pd(i)-Pd(ii) pathway or Pd(ii) catalysis.
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Affiliation(s)
- Yaohang Cheng
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 People's Republic of China
| | - Shijie Yu
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 People's Republic of China
| | - Yuhang He
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 People's Republic of China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 People's Republic of China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 People's Republic of China
| | - Zhenyu Yang
- School of Pharmaceutical and Materials Engineering, Taizhou University 1139 Shifu Avenue Taizhou 318000 China
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60
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Xie G, Zhao Y, Cai C, Deng GJ, Gong H. Palladium-Catalyzed Direct and Specific C-7 Acylation of Indolines with 1,2-Diketones. Org Lett 2021; 23:410-415. [PMID: 33400544 DOI: 10.1021/acs.orglett.0c03922] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The indole scaffold is a ubiquitous and useful substructure, and extensive investigations have been conducted to construct the indole framework and/or realize indole modification. Nevertheless, the direct selective functionalization on the benzenoid core must overcome the high activity of the C-3 position and still remains highly challenging. Herein, a palladium-catalyzed direct and specific C-7 acylation of indolines in the presence of an easily removed directing group was developed. This strategy usually is considered as a practical strategy for the preparation of acylated indoles because indoline can be easily converted to indole under oxidation conditions. In particular, our strategy greatly improved the alkacylation yield of indolines for which only an unsatisfactory yield could be achieved in the previous studies. Furthermore, the reaction can be scaled up to gram level in the standard reaction conditions with a much lower palladium loading (1 mol %).
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Affiliation(s)
- Guilin Xie
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University; The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Yuhan Zhao
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University; The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Changqun Cai
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University; The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University; The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Hang Gong
- Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University; The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
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61
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Bhattacharjee P, Bora U. Organocatalytic dimensions to the C–H functionalization of the carbocyclic core in indoles: a review update. Org Chem Front 2021. [DOI: 10.1039/d0qo01466d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A review highlighting important research findings in remote C–H activation processes using effectual organocatalytic perspectives. The challenging indole carbocyclic ring positions were successfully accessed with proper regio- and stereocontrols.
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Affiliation(s)
| | - Utpal Bora
- Department of Chemical Sciences
- Tezpur University
- Tezpur
- India
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62
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Kumar P, Nagtilak PJ, Kapur M. Transition metal-catalyzed C–H functionalizations of indoles. NEW J CHEM 2021. [DOI: 10.1039/d1nj01696b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review summarises a wide range of transformations on the indole skeleton, including arylation, alkenylation, alkynylation, acylation, nitration, borylation, and amidation, using transition-metal catalyzed C–H functionalization as the key step.
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Affiliation(s)
- Pravin Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Prajyot Jayadev Nagtilak
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
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63
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Tang J, Tang Y, Wang X, Wang Y, Huang X, Xu S, Li Y. Regioselective cascade annulation of indoles with alkynediones for construction of functionalized tetrahydrocarbazoles triggered by Cp*Rh III-catalyzed C–H activation. Org Chem Front 2021. [DOI: 10.1039/d1qo00616a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An efficient regioselective and stereoselective cascade annulation of indoles with alkynediones has been developed for construction of free (NH) tetrahydrocarbazoles with continuous quaternary carbons via Cp*RhIII-catalyzed indole C2–H activation.
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Affiliation(s)
- Jiaxu Tang
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Yuhai Tang
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Xiaonan Wang
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Yongzhuang Wang
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Xiaoli Huang
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Silong Xu
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Yang Li
- Department of Chemistry
- School of Science
- and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
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64
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Wang D, Wang S, Hao W, Tu S, Jiang B. Dual Palladium/Scandium Catalysis toward Rotationally Hindered
C3‐Naphthylated
Indoles from
β‐Alkynyl
Ketones and
o
‐Alkynyl
Anilines. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000304] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Dan Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Shi‐Chao Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Wen‐Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Shu‐Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou Jiangsu 221116 China
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65
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Pradhan S, De PB, Shah TA, Punniyamurthy T. Recent Advances in Metal‐catalyzed Alkylation, Alkenylation and Alkynylation of Indole/indoline Benzenoid Nucleus. Chem Asian J 2020; 15:4184-4198. [DOI: 10.1002/asia.202001159] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/05/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Sourav Pradhan
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati 781039 India
| | - Pinaki Bhusan De
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati 781039 India
| | - Tariq A. Shah
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati 781039 India
- Govt. Srinagar Women's College Zakura Srinagar 190006 India
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66
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Mu X, Ge X, Zhong X, Han L, Liu T. Mechanistic insight into the rhodium-catalyzed, P-directed selective C7 arylation of indoles: a DFT study. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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67
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Yan J, Zhang Z, Chen M, Lin Z, Sun J. A Study of the Reactivity of (Aza‐)Quinone Methides in Selective C6‐Alkylations of Indoles. ChemCatChem 2020. [DOI: 10.1002/cctc.202000850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiyao Yan
- Department of Chemistry The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR P. R. China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd South Area Hi-tech Park Nanshan Shenzhen 518057 P. R. China
| | - Zhihan Zhang
- Department of Chemistry The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR P. R. China
| | - Min Chen
- Department of Chemistry The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR P. R. China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd South Area Hi-tech Park Nanshan Shenzhen 518057 P. R. China
| | - Zhenyang Lin
- Department of Chemistry The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR P. R. China
| | - Jianwei Sun
- Department of Chemistry The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR P. R. China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd South Area Hi-tech Park Nanshan Shenzhen 518057 P. R. China
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68
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Lokhande† SK, Vaidya† GN, Satpute DP, Venkatesh A, Kumar S, Kumar D. Structure Ligation Relationship of Amino Acids for the Selective Indole C−H Arylation Reaction: L‐Aspartic acid as Sustainable Alternative of Phosphine Ligands. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000426] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shyam Kumar Lokhande†
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
| | - Gargi Nikhil Vaidya†
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
| | - Dinesh Parshuram Satpute
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
| | - Ashwini Venkatesh
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
| | - Sanjeev Kumar
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
| | - Dinesh Kumar
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) – Ahmedabad, Palaj Gandhinagar 382355, Gujarat India
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69
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Chu MM, Chen XY, Wang YF, Qi SS, Jiang ZH, Xu DQ, Xu ZY. Regio- and Enantioselective Friedel–Crafts Benzhydrylation of Indoles in Carbocyclic Ring with ortho-Quinomethanes: Access to Chiral Diarylindolylmethanes. J Org Chem 2020; 85:9491-9502. [DOI: 10.1021/acs.joc.9b03479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ming-Ming Chu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xue-Yang Chen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Suo-Suo Qi
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhen-Hui Jiang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhen-Yuan Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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70
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Wen ZK, Wu XX, Bao WK, Xiao JJ, Chao JB. Palladium-Catalyzed Regioselective Coupling Cyclohexenone into Indoles: Atom-Economic Synthesis of β-Indolyl Cyclohexenones and Derivatization Applications. Org Lett 2020; 22:4898-4902. [PMID: 32515596 DOI: 10.1021/acs.orglett.0c01763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein, we report a palladium-catalyzed dehydrogenative cross-coupling of indoles with cyclic enones to give β-indolyl cyclic enones under mild and neutral reaction conditions. The key to the success is to explore a mild condition, which ensures the indole C-H activation and subsequent syn β-hydride elimination through rapid enolization isomerization of Pd(II)-enolate while suppressing other undesired side reactions. Synthetic utility has also been demonstrated in the flexible transformation of the coupling products to meta-phenols and benzo[a]carbazoles.
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Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiao-Xue Wu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Wen-Kai Bao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jing-Jing Xiao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jian-Bin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
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71
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Kona CN, Nishii Y, Miura M. Thioether-Directed C4-Selective C–H Acylmethylation of Indoles Using α-Carbonyl Sulfoxonium Ylides. Org Lett 2020; 22:4806-4811. [DOI: 10.1021/acs.orglett.0c01617] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chandrababu Naidu Kona
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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72
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Mo ZY, Wang XY, Zhang YZ, Yang L, Tang HT, Pan YM. Electrochemically enabled functionalization of indoles or anilines for the synthesis of hexafluoroisopropoxy indole and aniline derivatives. Org Biomol Chem 2020; 18:3832-3837. [PMID: 32396933 DOI: 10.1039/d0ob00157k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An environmentally benign electrochemically enabled site-selective functionalization of indole or aniline derivatives with hexafluoroisopropanol in the presence of tetrabutyl ammonium hexafluorophosphate as the redox catalyst and electrolyte was demonstrated in this work. Under mild electro-oxidation conditions, a series of hexafluoroisopropoxy indole and aniline derivatives with pharmacological activity were obtained. This conversion does not need transition metals and oxidants, and has good functional group tolerance. The in vitro cytotoxicity of all compounds was evaluated by the MTT assay against four human cancer cell lines. The results revealed that hexafluoroisopropoxy indoles have good antitumor activity and compound 2i increased the intracellular levels of ROS and inhibited apoptosis in HeLa cells.
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Affiliation(s)
- Zu-Yu Mo
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China.
| | - Xin-Yu Wang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China.
| | - Yu-Zhen Zhang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China.
| | - Li Yang
- Guangxi Key Laboratory of Special Non-wood Forest Cultivation and Utilization, Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning, 530002, P. R. of China.
| | - Hai-Tao Tang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China.
| | - Ying-Ming Pan
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, People's Republic of China.
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73
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Diaryliodoniums Salts as Coupling Partners for Transition-Metal Catalyzed C- and N-Arylation of Heteroarenes. Catalysts 2020. [DOI: 10.3390/catal10050483] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Owing to the pioneering works performed on the metal-catalyzed sp2 C–H arylation of indole and pyrrole by Sanford and Gaunt, N– and C-arylation involving diaryliodonium salts offers an attractive complementary strategy for the late-stage diversification of heteroarenes. The main feature of this expanding methodology is the selective incorporation of structural diversity into complex molecules which usually have several C–H bonds and/or N–H bonds with high tolerance to functional groups and under mild conditions. This review summarizes the main recent achievements reported in transition-metal-catalyzed N– and/or C–H arylation of heteroarenes using acyclic diaryliodonium salts as coupling partners.
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74
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Sherikar MS, Devarajappa R, Prabhu KR. Weak Coordinating Carbonyl-Directed Rhodium(III)-Catalyzed C-H Activation at the C4-Position of Indole with Allyl Alcohols. J Org Chem 2020; 85:5516-5524. [PMID: 32192332 DOI: 10.1021/acs.joc.0c00277] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A weakly coordinating carbonyl-directed coupling of allyl alcohols at the C-4 position of indole derivatives under the C-H activation conditions catalyzed by Rh(III) is reported. This results in alkylation at the C-4 position of indole derivatives exclusively. The obtained product forms a tricyclic derivative under aldol reaction conditions, which can be a potential precursor for synthesizing a few alkaloid molecules such as ergot, hapalindole alkaloids, and related heterocyclic compounds.
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Affiliation(s)
| | - Ravi Devarajappa
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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75
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Chen J, Li M, Zhang J, Sun W, Jiang Y. Copper-Catalyzed Functionalization of Aza-Aromatic Rings with Fluoroalcohols via Direct C(sp2)–H/C(sp3)–H Coupling Reactions. Org Lett 2020; 22:3033-3038. [DOI: 10.1021/acs.orglett.0c00797] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jie Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Meng Li
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jinli Zhang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Wangbin Sun
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yaojia Jiang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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76
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De PB, Atta S, Pradhan S, Banerjee S, Shah TA, Punniyamurthy T. Cp*Co(III)-Catalyzed C-7 C-C Coupling of Indolines with Aziridines: Merging C-H Activation and Ring Opening. J Org Chem 2020; 85:4785-4794. [PMID: 32154719 DOI: 10.1021/acs.joc.0c00010] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A Cp*Co(III)-catalyzed directing group-assisted C7 C-C coupling of indolines with aziridines has been developed by merging C-H activation and ring opening. The use of cobalt catalyst, detection of a Co(III) intermediate, and late-stage removal of the directing group are important practical features.
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Affiliation(s)
- Pinaki Bhusan De
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sayan Atta
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sourav Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sonbidya Banerjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Tariq A Shah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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77
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915212] [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)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
- State Key Laboratory of Elemento-Organic ChemistryNankai University 300071 Tianjing China
- Singfar Laboratories 510670 Guangzhou China
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78
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Pradhan S, Mishra M, De PB, Banerjee S, Punniyamurthy T. Weak Coordination Enabled Switchable C4-Alkenylation and Alkylation of Indoles with Allyl Alcohols. Org Lett 2020; 22:1720-1725. [PMID: 32065752 DOI: 10.1021/acs.orglett.9b04612] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A weak carbonyl coordination facilitated tunable reactivity between alkenylation and alkylation of indoles at the C4 C-H site is presented using readily accessible allylic alcohols in the presence of Rh catalysis by switching the additives or directing group. Exclusive site selectivity, functional group tolerance, and late-stage modifications are the important practical features.
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Affiliation(s)
- Sourav Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Manmath Mishra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Pinaki Bhusan De
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sonbidya Banerjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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79
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020; 59:4670-4677. [PMID: 31961991 DOI: 10.1002/anie.201915212] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/18/2020] [Indexed: 12/26/2022]
Abstract
An unprecedented deconstructive reorganization strategy for the de novo synthesis of hydroxylated benzofurans from kojic acid- or maltol-derived alkynes is reported. In this reaction, both the benzene and furan rings were simultaneously constructed, whereas the pyrone moiety of the kojic acid or maltol was deconstructed and then reorganized into the benzene ring as a six-carbon component. Through this strategy, at least one free hydroxyl group was introduced into the benzene ring in a substitution-pattern tunable fashion without protection-deprotection and redox adjustment. With this method, a large number of hydroxylated benzofuran derivatives with different substitution-patterns have been prepared efficiently. This methodology has also been shown as the key step in a collective total synthesis of hydroxylated benzofuran-containing natural products (11 examples).
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Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjing, China.,Singfar Laboratories, 510670, Guangzhou, China
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80
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Shi X, Xu W, Wang R, Zeng X, Qiu H, Wang M. Ketone-Directed Cobalt(III)-Catalyzed Regioselective C2 Amidation of Indoles. J Org Chem 2020; 85:3911-3920. [DOI: 10.1021/acs.joc.9b03018] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xinxia Shi
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Weiyan Xu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Rongchao Wang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Huayu Qiu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Min Wang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
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81
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Banerjee S, Vivek Kumar S, Punniyamurthy T. Site-Selective Rh-Catalyzed C-7 and C-6 Dual C–H Functionalization of Indolines: Synthesis of Functionalized Pyrrolocarbazoles. J Org Chem 2020; 85:2793-2805. [DOI: 10.1021/acs.joc.9b03180] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sonbidya Banerjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sundaravel Vivek Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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82
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Pan C, Huang G, Shan Y, Li Y, Yu JT. Rh(iii)-Catalyzed regioselective C4 alkylation of indoles with allylic alcohols: direct access to β-indolyl ketones. Org Biomol Chem 2020; 18:3038-3042. [DOI: 10.1039/d0ob00396d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A Rh(iii)-catalyzed direct C4 alkylation of indoles with allylic alcohols to access β-indolyl ketones was developed.
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Affiliation(s)
- Changduo Pan
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou 213001
- P. R. China
| | - Gao Huang
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Yujia Shan
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Yiting Li
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
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83
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Intrieri D, Carminati DM, Zardi P, Damiano C, Manca G, Gallo E, Mealli C. Indoles from Alkynes and Aryl Azides: Scope and Theoretical Assessment of Ruthenium Porphyrin-Catalyzed Reactions. Chemistry 2019; 25:16591-16605. [PMID: 31626355 DOI: 10.1002/chem.201904224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Indexed: 01/24/2023]
Abstract
A symbiotic experimental/computational study analyzed the Ru(TPP)(NAr)2 -catalyzed one-pot formation of indoles from alkynes and aryl azides. Thirty different C3 -substituted indoles were synthesized and the best performance, in term of yields and regioselectivities, was observed when reacting ArC≡CH alkynes with 3,5-(EWG)2 C6 H3 N3 azides, whereas the reaction was less efficient when using electron-rich aryl azides. A DFT analysis describes the reaction mechanism in terms of the energy costs and orbital/electronic evolutions; the limited reactivity of electron-rich azides was also justified. In summary, PhC≡CH alkyne interacts with one NAr imido ligand of Ru(TPP)(NAr)2 to give a residually dangling C(Ph) group, which, by coupling with a C(H) unit of the N-aryl substituent, forms a 5+6 bicyclic molecule. In the process, two subsequent spin changes allow inverting the conformation of the sp2 C(Ph) atom and its consequent electrophilic-like attack to the aromatic ring. The bicycle isomerizes to indole via a two-step outer sphere H-migration. Eventually, a 'Ru(TPP)(NAr)' mono-imido active catalyst is reformed after each azide/alkyne reaction.
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Affiliation(s)
- Daniela Intrieri
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Daniela Maria Carminati
- Department of Chemistry, University of Rochester, 416 Hutchison Hall, New York, NY, 14627-0216, USA
| | - Paolo Zardi
- Department of Chemical Sciences, University of Padua, Via F. Marzolo 1, 35131, Padua, Italy
| | - Caterina Damiano
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Gabriele Manca
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
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84
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Shah TA, De PB, Pradhan S, Banerjee S, Punniyamurthy T. Cp*Co(III)-Catalyzed Regioselective C2 Amidation of Indoles Using Acyl Azides. J Org Chem 2019; 84:16278-16285. [PMID: 31771331 DOI: 10.1021/acs.joc.9b02244] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A cobalt-catalyzed C2-selective amidation of indoles using acyl azides has been accomplished. Isotope experiments suggest that C-H activation is reversible. The use of sustainable Co catalysis, functional group diversity, substrate scope, and regioselectivity are the important practical features.
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Affiliation(s)
- Tariq A Shah
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Pinaki Bhusan De
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Sourav Pradhan
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Sonbidya Banerjee
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
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85
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Pradhan S, De PB, Punniyamurthy T. Weak Coordination-Guided Regioselective Direct Redox-Neutral C4 Allylation of Indoles with Morita-Baylis-Hillman Adducts. Org Lett 2019; 21:9898-9903. [PMID: 31794238 DOI: 10.1021/acs.orglett.9b03823] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A weak carbonyl coordination-guided regioselective C4 allylation of indoles is demonstrated using the versatile Morita-Baylis-Hillman adduct in the presence of Rh catalysts in a redox-neutral fashion. The substrate scope, functional group diversity, oxidant free character, mechanistic aspects, and synthetic utilities are important practical features.
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Affiliation(s)
- Sourav Pradhan
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
| | - Pinaki Bhusan De
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , India
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86
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Wu H, Wang L, Zhang J, Jin Y. Urea-Derivative Catalyzed Enantioselective Hydroxyalkylation of Hydroxyindoles with Isatins. Molecules 2019; 24:molecules24213944. [PMID: 31683678 PMCID: PMC6864875 DOI: 10.3390/molecules24213944] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 11/16/2022] Open
Abstract
The enantioselective transformations of indoles preferentially take place in the more-reactive azole ring. However, the methods for the enantioselective functionalization of the indole benzene ring are scarce. In this paper, a series of bifunctional (thio)urea derivatives were used to organocatalyze the enantioselective Friedel-Crafts hydroxyalkylation of indoles with isatins. The resulting products were obtained in good yields (65-90%) with up to 94% enantiomer excess (ee). The catalyst type and the substrate scope were broadened in this methodology.
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Affiliation(s)
- Hao Wu
- Department of Pharmacy, Jilin Medical University, Jilin, Jilin 132013, China.
| | - Liming Wang
- Department of Pharmacy, Jilin Medical University, Jilin, Jilin 132013, China.
| | - Junwei Zhang
- Department of Pharmacy, Jilin Medical University, Jilin, Jilin 132013, China.
| | - Ying Jin
- Department of Pharmacy, Jilin Medical University, Jilin, Jilin 132013, China.
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87
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Zhou J, Zhu GD, Wang L, Tan FX, Jiang W, Ma ZG, Kang JC, Hou SH, Zhang SY. Remote C6-Enantioselective C–H Functionalization of 2,3-Disubstituted Indoles through the Dual H-Bonds and π–π Interaction Strategy Enabled by CPAs. Org Lett 2019; 21:8662-8666. [DOI: 10.1021/acs.orglett.9b03276] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jia Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Guo-Dong Zhu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Le Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Fu-Xin Tan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Wei Jiang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Zhi-Gang Ma
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Jun-Chen Kang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Si-Hua Hou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shu-Yu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
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88
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Wang Z, Xu G, Tang S, Shao Y, Sun J. Catalyst-Controlled Selective Alkylation/Cyclopropanation of Indoles with Vinyl Diazoesters. Org Lett 2019; 21:8488-8491. [DOI: 10.1021/acs.orglett.9b03323] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhen Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Guangyang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
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89
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Yuan C, Tan H, Jiang X, Liu S, Jiang L, Cao Q, Xu X, Deng X, Pan G, Chen J, Cui H. Phosphine‐Catalyzed [3+2] Cycloaddition and Vinylation of Indole‐Derived α,α‐Dicyanoolefins with γ‐Substituted Allenoates. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chang Yuan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Hao Tan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Xue‐Fei Jiang
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Si Liu
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Lu Jiang
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Qi‐Ying Cao
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Xing‐Jie Xu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou, Guangdong 511436 China
| | - Xiao‐Yan Deng
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Guan‐Nan Pan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Jian‐Yang Chen
- Chongqing Key Laboratory of Environmental Materials and Remediation TechnologiesChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Hai‐Lei Cui
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
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90
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Cardoza S, Das P, Tandon V. Pd-Catalyzed Sequential Arylation of 7-Azaindoles: Aggregate-Induced Emission of Tetra-Aryl 7-Azaindoles. J Org Chem 2019; 84:14015-14029. [DOI: 10.1021/acs.joc.9b02187] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Savio Cardoza
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand 826004, India
| | - Vibha Tandon
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
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91
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Rodriguez J, Zeineddine A, Sosa Carrizo ED, Miqueu K, Saffon-Merceron N, Amgoune A, Bourissou D. Catalytic Au(i)/Au(iii) arylation with the hemilabile MeDalphos ligand: unusual selectivity for electron-rich iodoarenes and efficient application to indoles. Chem Sci 2019; 10:7183-7192. [PMID: 31588286 PMCID: PMC6685352 DOI: 10.1039/c9sc01954e] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/13/2019] [Indexed: 12/14/2022] Open
Abstract
The ability of the hemilabile (P,N) MeDalphos ligand to trigger oxidative addition of iodoarenes to gold has been thoroughly studied. Competition experiments and Hammett correlations substantiate a clear preference of gold for electron-enriched substrates both in stoichiometric oxidative addition reactions and in catalytic C-C cross-coupling with 1,3,5-trimethoxybenzene. This feature markedly contrasts with the higher reactivity of electron-deprived substrates typically encountered with palladium. Based on DFT calculations and detailed analysis of the key transition states (using NBO, CDA and ETS-NOCV methods in particular), the different behavior of the two metals is proposed to result from inverse electron flow between the substrate and metal. Indeed, oxidative addition of iodobenzene is associated with a charge transfer from the substrate to the metal at the transition state for gold, but opposite for palladium. The higher electrophilicity of the gold center favors electron-rich substrates while important back-donation from palladium favors electron-poor substrates. Facile oxidative addition of iodoarenes combined with the propensity of gold(iii) complexes to readily react with electron-rich (hetero)arenes prompted us to apply the (MeDalphos)AuCl complex in the catalytic arylation of indoles, a challenging but very important transformation. The gold complex proved to be very efficient, general and robust. It displays complete regioselectivity for C3 arylation, it tolerates a variety of functional groups at both the iodoarene and indole partners (NO2, CO2Me, Br, OTf, Bpin, OMe…) and it proceeds under mild conditions (75 °C, 2 h).
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Affiliation(s)
- Jessica Rodriguez
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - Abdallah Zeineddine
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - E Daiann Sosa Carrizo
- CNRS/UNIV PAU & PAYS ADOUR , Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux , (IPREM UMR 5254) , Hélioparc, 2 Avenue du Président Angot , 64053 Pau Cedex 09 , France
| | - Karinne Miqueu
- CNRS/UNIV PAU & PAYS ADOUR , Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux , (IPREM UMR 5254) , Hélioparc, 2 Avenue du Président Angot , 64053 Pau Cedex 09 , France
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse (FR 2599) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France
| | - Abderrahmane Amgoune
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - Didier Bourissou
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
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92
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Mao J, Wang Z, Xu X, Liu G, Jiang R, Guan H, Zheng Z, Walsh PJ. Synthesis of Indoles through Domino Reactions of 2‐Fluorotoluenes and Nitriles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904658] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jianyou Mao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Zhiting Wang
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xinyu Xu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Guoqing Liu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Runsheng Jiang
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Haixing Guan
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Zhipeng Zheng
- Roy and Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
| | - Patrick J. Walsh
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
- Roy and Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia PA 19104 USA
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93
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Mao J, Wang Z, Xu X, Liu G, Jiang R, Guan H, Zheng Z, Walsh PJ. Synthesis of Indoles through Domino Reactions of 2-Fluorotoluenes and Nitriles. Angew Chem Int Ed Engl 2019; 58:11033-11038. [PMID: 31062472 DOI: 10.1002/anie.201904658] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Indexed: 12/30/2022]
Abstract
Indoles are essential heterocycles in medicinal chemistry, and therefore, novel and efficient approaches to their synthesis are in high demand. Among indoles, 2-aryl indoles have been described as privileged scaffolds. Advanced herein is a straightforward, practical, and transition-metal-free assembly of 2-aryl indoles. Simply combining readily available 2-fluorotoluenes, nitriles, LiN(SiMe3 )2 , and CsF enables the generation of a diverse array of indoles (38 examples, 48-92 % yield). A range of substituents can be introduced into each position of the indole backbone (C4 to C7, and aryl groups at C2), providing handles for further elaboration.
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Affiliation(s)
- Jianyou Mao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhiting Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Xinyu Xu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Guoqing Liu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Runsheng Jiang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Haixing Guan
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhipeng Zheng
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA
| | - Patrick J Walsh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA
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94
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Kona CN, Nishii Y, Miura M. Iridium‐Catalyzed Direct C4‐ and C7‐Selective Alkynylation of Indoles Using Sulfur‐Directing Groups. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904709] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chandrababu Naidu Kona
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young ResearchersGraduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
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95
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Kona CN, Nishii Y, Miura M. Iridium-Catalyzed Direct C4- and C7-Selective Alkynylation of Indoles Using Sulfur-Directing Groups. Angew Chem Int Ed Engl 2019; 58:9856-9860. [PMID: 31115135 DOI: 10.1002/anie.201904709] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Indexed: 12/12/2022]
Abstract
Indoles and their analogues have been one of the most ubiquitous heterocycles during the past century, and extensive studies have been conducted to establish practical synthetic methods for their derivatives. In particular, selective functionalization of the poorly reactive benzenoid core over the pyrrole ring has been a great challenge. Reported herein is an iridium-catalyzed direct alkynylation of the indole C4- and C7-positions with the assistance of sulfur directing groups. This transformation shows a wide range of functional-group tolerance with exceptional site selectivity. The directing group can be either easily removed or transformed after catalysis. The synthetic utility of the alkyne fragment is demonstrated by the derivatization into the core structure of natural indole alkaloids.
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Affiliation(s)
- Chandrababu Naidu Kona
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
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96
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Martínez Suárez JF, Caram JA, Echeverría GA, Piro OE, Gennaro AM, Mirífico MV. Electrosynthesis of N-Methylisatin. J Org Chem 2019; 84:6879-6885. [DOI: 10.1021/acs.joc.9b00690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaime F. Martínez Suárez
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET-CCT La Plata, Facultad de Ciencias Exactas, Departamento de Química, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - José A. Caram
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET-CCT La Plata, Facultad de Ciencias Exactas, Departamento de Química, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
| | - Gustavo. A. Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata e Instituto IFLP (CONICET, CCT-La Plata), C. C. 67, 1900 La Plata, Argentina
| | - Oscar E. Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata e Instituto IFLP (CONICET, CCT-La Plata), C. C. 67, 1900 La Plata, Argentina
| | - Ana. M. Gennaro
- Instituto de Física del Litoral, UNL-CONICET, Güemes 3450, 3000 Santa Fe, Argentina
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
| | - María. V. Mirífico
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET-CCT La Plata, Facultad de Ciencias Exactas, Departamento de Química, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina
- Facultad de Ingeniería, Departamento de Ingeniería Química, Universidad Nacional de La Plata, Calle 47 y 1, 1900 La Plata, Argentina
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97
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Chen S, Zhang M, Su R, Chen X, Feng B, Yang Y, You J. C2/C4 Regioselective Heteroarylation of Indoles by Tuning C–H Metalation Modes. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01273] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shuyou Chen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Min Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Rongchuan Su
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Xingyu Chen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Boya Feng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yudong Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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98
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Chen P, Hao Y, Wang X, Yuan D, Yao Y, Ackermann L. Directing-Group-Free C7-Alkylations of N-Alkylindoles Mediated by Cationic Zirconium Complexes: Role of Brønsted Acid for Catalytic Manifold. Chemistry 2019; 25:7292-7297. [PMID: 30893504 DOI: 10.1002/chem.201901268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 01/05/2023]
Abstract
Highly position selective alkylations of N-alkylindoles at C7-positions have been enabled by cationic zirconium complexes. The strategy provides a straightforward access to install alkyl groups at C7-positions of indoles without a complex directing group. Mechanistic studies provided support for the importance of Brønsted acids in the catalytic manifold.
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Affiliation(s)
- Ping Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yanhong Hao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Xinxin Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universiät Götingen, Tammannstraße 2, 37077, Götingen, Germany
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99
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Banjare SK, Chebolu R, Ravikumar PC. Cobalt Catalyzed Hydroarylation of Michael Acceptors with Indolines Directed by a Weakly Coordinating Functional Group. Org Lett 2019; 21:4049-4053. [DOI: 10.1021/acs.orglett.9b01228] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatani, Khurda, 752050 Odisha, India
| | - Rajesh Chebolu
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatani, Khurda, 752050 Odisha, India
| | - P. C. Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatani, Khurda, 752050 Odisha, India
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100
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Mechanistic and experimental study on copper-catalyzed C3-sulfenylation of indoles with sulfur powder and aryl iodides. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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