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Xie S, Fu L, Ding Y, Wang Q, He C, Xu W, Wang Q, Zhong Y, Fan X, Yang M. Electrochemical C-H Mono-/Multi-Bromination Regulation of N-Sulfonylanilines on a Cost-Effective Carbon Fiber Electrode and Its Prospective Electroactive Molecule Screening. J Org Chem 2024; 89:6759-6769. [PMID: 38683949 DOI: 10.1021/acs.joc.4c00080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Electrochemical C-H mono/multi-bromination regulation of N-sulfonylanilines on the cost-effective CF electrode is described. This reaction proceeds smoothly under mild conditions with a broad substrate scope, affording diverse mono/multi-brominated anilines in moderate to good yields. Mechanism study reveals that this transformation involves anodic oxidation, aromatic electrophilic substitution, and deprotonation. Preliminary electroactive molecule screening results in its prospective application in electroactive MBs for electrochemical biosensors.
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Affiliation(s)
- Shuchun Xie
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Li Fu
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Yechun Ding
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Qi Wang
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Chen He
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Wenjun Xu
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Qing Wang
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Yingfang Zhong
- Academic Affairs Office, Gannan Medical University, Ganzhou 341000, China
| | - Xiaona Fan
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
| | - Min Yang
- School of Pharmacy, Key Laboratory for Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou 341000, China
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2
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Shao C, Ma C, Li L, Liu J, Shen Y, Chen C, Yang Q, Xu T, Hu Z, Kan Y, Zhang T. Copper-promoted C5-selective bromination of 8-aminoquinoline amides with alkyl bromides. Beilstein J Org Chem 2024; 20:155-161. [PMID: 38292044 PMCID: PMC10825800 DOI: 10.3762/bjoc.20.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
An efficient and practical method for the synthesis of C5-brominated 8-aminoquinoline amides via a copper-promoted selective bromination of 8-aminoquinoline amides with alkyl bromides was developed. The reaction proceeds smoothly in dimethyl sulfoxide (DMSO) under air, employing activated and unactivated alkyl bromides as the halogenation reagents without additional external oxidants. This method features outstanding site selectivity, broad substrate scope, and excellent yields.
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Affiliation(s)
- Changdong Shao
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Chen Ma
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Li Li
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Jingyi Liu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Yanan Shen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Chen Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Qionglin Yang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Tianyi Xu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Zhengsong Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Yuhe Kan
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
| | - Tingting Zhang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, Jiangsu, China
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3
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Shao C, Xu T, Chen C, Yang Q, Tang C, Chen P, Lu M, Hu Z, Hu H, Zhang T. Copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides using ethyl bromodifluoroacetate as the bifunctional reagent. RSC Adv 2023; 13:6993-6999. [PMID: 36874938 PMCID: PMC9977446 DOI: 10.1039/d3ra00088e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
A simple and effective method for the copper-catalyzed selective C5-H bromination and difluoromethylation of 8-aminoquinoline amides with ethyl bromodifluoroacetate as the bifunctional reagent was developed. The combination of cupric catalyst and alkaline additive results in a C5-bromination reaction, whereas cuprous catalyst combined with silver additive results in the C5-difluoromethylation reaction. This method has a broad substrate scope and allows for easy and convenient access to desired C5-functionalized quinolones with good to excellent yields.
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Affiliation(s)
- Changdong Shao
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tianyi Xu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chen Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Qionglin Yang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Chao Tang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Ping Chen
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Mingzhu Lu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Zhengsong Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Huayou Hu
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
| | - Tingting Zhang
- Jiangsu Provincial Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University Huai'an 223300 Jiangsu China
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4
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Metal, iodine and oxidant-free electrosynthesis of substituted indoles from 1-(2-aminophenyl)alcohols. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Jin L, Zeng X, Li S, Qiu G, Liu P. Copper‐Catalyzed Regioselective Halogenation of Anilides with N‐Fluorobenzenesulfonimide. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lianwen Jin
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Xiaoli Zeng
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Siyang Li
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Guofu Qiu
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Peng Liu
- Wuhan University School of Pharmaceutical Sciences donghu road 185 430071 Wuhan CHINA
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Recent Progresses in the Preparation of Chlorinated Molecules: Electrocatalysis and Photoredox Catalysis in the Spotlight. REACTIONS 2022. [DOI: 10.3390/reactions3020018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Among halogenated molecules, those containing chlorine atoms are fundamental in many areas such as pharmaceuticals, polymers, agrochemicals and natural metabolites. Despite the fact that many reactions have been developed to install chlorine on organic molecules, most of them rely on toxic and hazardous chlorinating reagents as well as harsh conditions. In an attempt to move towards more sustainable approaches, photoredox catalysis and electrocatalysis have emerged as powerful alternatives to traditional methods. In this review, we collect the most recent and significant examples of visible-light- or current-mediated chlorination published in the last five years.
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Haozhi W, Tian L, Jianwen J, Jieping W. KI-Catalyzed Selective C(5)-Sulfenylation and C(5),C(7)-Disulfenylation of Unprotected 8-Aminoquinolines and the Indole C(2),C(3)-Disulfenylation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202206029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zhao M, Qin Z, Zhang K, Li J. Metal-free site-selective C-H cyanoalkylation of 8-aminoquinoline and aniline-derived amides with azobisisobutyronitrile. RSC Adv 2021; 11:30719-30724. [PMID: 35479854 PMCID: PMC9041112 DOI: 10.1039/d1ra06013a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/25/2021] [Indexed: 12/17/2022] Open
Abstract
Using K2S2O8, an efficient and metal-free site-selective C–H cyanoalkylation of 8-aminoquinoline and aniline-derived amides with AIBN (azobisisobutyronitrile) was developed. Without any catalyst, various substrates and functional groups were compatible to afford corresponding products in moderate to high yields. A mechanism study displayed that a radical–radical coupling process was involved via the N-centered radical generation and delocalization of aryl amides. An efficient metal-free cyanoalkylation of 8-aminoquinoline and aniline-derived amides was achieved in the presence of K2S2O8. The method showed good substrate tolerance and also suitable for bromination and dimerization reactions.![]()
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Affiliation(s)
- Mengfei Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Zengxin Qin
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Kaixin Zhang
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
| | - Jizhen Li
- Department of Organic Chemistry, College of Chemistry, Jilin University 2519 Jiefang Road Changchun 130021 P. R. China
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Wang C, Shi P, Bolm C. Visible light-promoted NH-halogenation of sulfoximines with dichloromethane or dibromomethane. Org Chem Front 2021. [DOI: 10.1039/d1qo00382h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In the presence of a hypervalent iodine reagent, N-halo sulfoximines are obtained by catalyst-free visible light-promoted halogenations of their NH-counterparts with dichloro- or dibromomethane as halogen source.
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Affiliation(s)
- Chenyang Wang
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Peng Shi
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Carsten Bolm
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
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