1
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Zhou F, Li M, Jiang H, Wu W. Recent Advances in Transformations Involving Electron‐Rich Alkenes: Functionalization, Cyclization, and Cross‐Metathesis Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Zhou
- State Key Laboratory of Luminescent Materials and Devices School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
| | - Meng Li
- State Key Laboratory of Luminescent Materials and Devices School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
| | - Huanfeng Jiang
- State Key Laboratory of Luminescent Materials and Devices School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 People's Republic of China
| | - Wanqing Wu
- State Key Laboratory of Luminescent Materials and Devices School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 People's Republic of China
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2
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Talukdar R. Rapid access to 3-acyl indoles using ethyl acetate/triflic acid couple as the acylium donor and Cu(OAc) 2 catalysed aerial oxidation of indole benzoins. Org Biomol Chem 2020; 18:8876-8880. [PMID: 33103169 DOI: 10.1039/d0ob01977a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Esters are potential acyl donors but are relatively unexplored for that purpose. A facile installation of acyl groups at the C-3 position of indoles under triflic acid catalysed conditions with easily available and cheap esters as new acylating agents is described herein. Furthermore, heterocycles like N-protected pyrrole, furan and thiophene were also suitable substrates for similar C-2 acylation. Analogous C-3 benzoylated products of indole were obtained, albeit in lower yields, by using methyl benzoate as a benzoyl donor. The benzoylated products were synthesised in much better yields via a copper(ii) catalysed aerial oxidation of indole containing benzoins.
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Affiliation(s)
- Ranadeep Talukdar
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow-226014, India.
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3
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Liu Y, Xue D, Wang C, Huang L. Room-Temperature Palladium(II)-Catalyzed Direct 2-Arylation of Indoles with Tetraarylstannanes. Synlett 2020. [DOI: 10.1055/s-0040-1707196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A palladium(II)-catalyzed direct 2-arylation of indoles by tetraarylstannanes with oxygen (balloon) as the oxidant at room temperature has been developed. Various tetraarylstannanes can be employed as aryl sources for 2-arylation of indoles in up to 89% yield, providing a practical and efficient catalytic protocol for accessing 2-arylindoles.
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Affiliation(s)
- Yuxia Liu
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Linjuan Huang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University
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4
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Li Y, Sun N, Hao M, Zhang CL, Li H, Zhu WQ. Nanopalladium-Catalyzed Oxidative Heck Reaction of Fluorinated Olefins: H2O2 as a Green Oxidant. Catal Letters 2020. [DOI: 10.1007/s10562-020-03334-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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5
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Abstract
The Pd-mediated cross-coupling of (hetero)arenes with alkenes may be an effective method for the formation of a C–C bond from two C–H bonds. Discovered by Fujiwara and co-workers in 1967, this reaction led to a number of reports that we firstly highlighted in 2011 (review with references till June 2010) and for which, we retained the name “dehydrogenative Heck reaction”. The topic, especially the reactions of five-membered heteroarenes, has been the subject of intensive research over the last ten years. The present review is limited to these dehydrogenative Heck reactions published since 2010, underlining the progress of the procedures.
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6
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Ghosh C, Nagtilak PJ, Kapur M. Rhodium(III)-Catalyzed Directed C-H Dienylation of Anilides with Allenes Leads to Highly Conjugated Systems. Org Lett 2019; 21:3237-3241. [PMID: 30998382 DOI: 10.1021/acs.orglett.9b00958] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Allenes are unique coupling partners in transition-metal-catalyzed C-H functionalization leading to a variety of products via alkenylation, allenylation, allylation, and annulation reactions. The outcome is governed by both the reactivity of the allene and the formation and stability of the organometallic intermediate. An efficient Rh(III)-catalyzed, weakly coordinating group-directed dienylation of electronically unbiased allenes is developed using an N-acyl amino acid as a ligand. Further elaboration of the dienylated products to construct polycyclic compounds is also described.
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Affiliation(s)
- Chiranjit Ghosh
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Prajyot Jayadev Nagtilak
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Manmohan Kapur
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
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7
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Lin W, Li W, Lu D, Su F, Wen TB, Zhang HJ. Dual Effects of Cyclopentadienyl Ligands on Rh(III)-Catalyzed Dehydrogenative Arylation of Electron-Rich Alkenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01753] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weidong Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Weiwei Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Dandan Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Feng Su
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Ting-Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
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8
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9
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Zhang S, Chen Z, Qin S, Lou C, Senan AM, Liao RZ, Yin G. Non-redox metal ion promoted oxidative coupling of indoles with olefins by the palladium(ii) acetate catalyst through dioxygen activation: experimental results with DFT calculations. Org Biomol Chem 2016; 14:4146-57. [DOI: 10.1039/c6ob00401f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Non-redox metal ions can sharply improve the Pd(ii)-catalyzed oxidative coupling of indoles with acrylates, leading to one-step synthesis of bis(indolyl)methane derivatives.
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Affiliation(s)
- Sicheng Zhang
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Shuhao Qin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Chenlin Lou
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Ahmed M. Senan
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
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10
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Giles RG, Heaney H, Plater MJ. Reactions of nitrilium salts with indole and pyrrole and their derivatives in the synthesis of imines, ketones and secondary amines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Li Y, Tu DH, Gu YJ, Wang B, Wang YY, Liu ZT, Liu ZW, Lu J. Oxidative Heck Reaction of Fluorinated Olefins with Arylboronic Acids by Palladium Catalysis. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500597] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Gogoi A, Modi A, Guin S, Rout SK, Das D, Patel BK. A metal free domino synthesis of 3-aroylindoles via two sp³ C-H activation. Chem Commun (Camb) 2015; 50:10445-7. [PMID: 25061987 DOI: 10.1039/c4cc04407j] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal free synthesis of 3-aroylindole involving two sp(3) C-H activation has been achieved starting from o-alkynyl-N,N-dialkylamines using catalyst TBAI and oxidant TBHP.
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Affiliation(s)
- Anupal Gogoi
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
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13
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Wu K, Wu P, Wang L, Chen J, Sun C, Yu Z. Tunable Brønsted Acidity-Dependent Alkylation and Alkenylation of Indoles. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400477] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Zhang P, Xiao T, Xiong S, Dong X, Zhou L. Synthesis of 3-Acylindoles by Visible-Light Induced Intramolecular Oxidative Cyclization of o-Alkynylated N,N-Dialkylamines. Org Lett 2014; 16:3264-7. [PMID: 24895026 DOI: 10.1021/ol501276j] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ping Zhang
- School of Chemistry
and Chemical
Engineering, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Tiebo Xiao
- School of Chemistry
and Chemical
Engineering, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Shengwei Xiong
- School of Chemistry
and Chemical
Engineering, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Xichang Dong
- School of Chemistry
and Chemical
Engineering, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Lei Zhou
- School of Chemistry
and Chemical
Engineering, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
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15
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Dawande SG, Kanchupalli V, Kalepu J, Chennamsetti H, Lad BS, Katukojvala S. Rhodium Enalcarbenoids: Direct Synthesis of Indoles by Rhodium(II)-Catalyzed [4+2] Benzannulation of Pyrroles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400161] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Dawande SG, Kanchupalli V, Kalepu J, Chennamsetti H, Lad BS, Katukojvala S. Rhodium enalcarbenoids: direct synthesis of indoles by rhodium(II)-catalyzed [4+2] benzannulation of pyrroles. Angew Chem Int Ed Engl 2014; 53:4076-80. [PMID: 24590818 DOI: 10.1002/anie.201400161] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 11/11/2022]
Abstract
Disclosed herein is the design of an unprecedented electrophilic rhodium enalcarbenoid which results from rhodium(II)-catalyzed decomposition of a new class of enaldiazo compounds. The synthetic utility of these enalcarbenoids has been successfully demonstrated in the first transition-metal-catalyzed [4+2] benzannulation of pyrroles, thus leading to substituted indoles. The new benzannulation has been applied to the efficient synthesis of the natural product leiocarpone as well as a potent adipocyte fatty-acid binding protein inhibitor.
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Affiliation(s)
- Sudam Ganpat Dawande
- Department of Chemistry, Indian Institute of Science Education & Research, Bhopal, Madhya Pradesh 462066 (India) http://home.iiserbhopal.ac.in/∼sk/
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17
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Li Y, Xue D, Lu W, Wang C, Liu ZT, Xiao J. DMF as Carbon Source: Rh-Catalyzed α-Methylation of Ketones. Org Lett 2013; 16:66-9. [DOI: 10.1021/ol403040g] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yang Li
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Dong Xue
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Wei Lu
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Chao Wang
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Zhao-Tie Liu
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Jianliang Xiao
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
- Department
of Chemistry, Liverpool Centre for Materials
and Catalysis, University of Liverpool, Liverpool L69 7ZD, United Kingdom
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