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Huang C, Jin Z, Zhang B, Zhou Y, Lin H, Kang H, Shen G, Lv X. One-pot synthesis of 4-(imidazol-1-yl)indole derivatives through a sequential dearomatization and Ag-catalyzed cyclization/Cs 2CO 3-mediated addition/aromatization reaction. Org Biomol Chem 2023; 21:4245-4256. [PMID: 37145103 DOI: 10.1039/d3ob00316g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A convenient one-pot assembly of 4-(imidazol-1-yl)indole derivatives from easily accessible o-alkynylanilines and imidazoles has been developed. The sequential dearomatization and Ag(I)-catalyzed cyclization/Cs2CO3-mediated conjugate addition/aromatization cascade reactions exhibit high efficiency and excellent selectivity. The combined use of a silver(I) salt and cesium carbonate is significant for facilitating this domino transformation. The 4-(imidazol-1-yl)indole products could be easily converted to the corresponding derivatives and might be valuable in biological chemistry and medicinal science.
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Affiliation(s)
- Chaoman Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Zefeng Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Bei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Yuanyuan Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Huiting Lin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Honglan Kang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
| | - Guodong Shen
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, Shandong, People's Republic of China
| | - Xin Lv
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People's Republic of China.
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Chen Z, He Q, Guo H, Fan R. Anodic dearomatization of 2-alkynylanilines for the synthesis of multi-functionalized indoles. Chem Commun (Camb) 2022; 58:6797-6800. [PMID: 35611853 DOI: 10.1039/d2cc01766k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An anodic oxidative dearomatization reaction of 2-alkynylanilines was developed. The formed dearomatized compounds were used as versatile precursors in the synthesis of a variety of benzenoid ring multi-functionalized indoles through simple conversions.
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Affiliation(s)
- Zhuowen Chen
- Academy for Engineering and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Qiuqin He
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Hao Guo
- Academy for Engineering and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
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Xu T, He Q, Fan R. Synthesis of C7-Functionalized Indoles through an Aromaticity Destruction-Reconstruction Process. Org Lett 2022; 24:2665-2669. [PMID: 35377659 DOI: 10.1021/acs.orglett.2c00733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A process for the synthesis of C7-functionalized indoles using para-substituted 2-alkynylanilines as starting materials was reported. The process involves a dearomatization, an 1,2-addition by organic lithium or Grignard reagents, an aromatization-driven allylic rearrangement, and a cyclization. A variety of groups including alkyl, aryl, alkenyl, or alkynyl groups were selectively installed at the C7 site of indoles leading to the formation of 2,5,7-trisubstituted indoles.
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Affiliation(s)
- Tingxuan Xu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Qiuqin He
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
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Chen X, Lu S, Deng P, Chang X, Zhao Y, Ma Y, Zhang D, Xia F, Yang L, Wang J, Sun P. Lewis Acid Regulated Divergent Catalytic Reaction between Quinone Imine Ketals (QIKs) and 1,3‐Dicarbonyl Compounds: Switchable Access to Multiple Products Including 2‐Aryl‐1,3‐Dicarbonyl Compounds, Indoles, and Benzofurans. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xingyu Chen
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Sixian Lu
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Ping Deng
- School of Pharmacy Chongqing University Chongqing 400016 People's Republic of China
| | - Xiaoqiang Chang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Yifan Zhao
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Yue Ma
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Dong Zhang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Fei Xia
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Lan Yang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Jigang Wang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Peng Sun
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
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Li X, He Q, Fan R. Divergent synthesis of 4-amino indoles with free amine groups via tandem reaction of 2-alkynylanilines. Org Chem Front 2022. [DOI: 10.1039/d2qo00675h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dearomatization method for divergent synthesis of 4-amino indoles having N1 or C4 free amine groups from 2-alkynylanilines was reported.
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Affiliation(s)
- Xiaohua Li
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Qiuqin He
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
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Qiu W, Wang W, Liu Y, Fan R. Synthesis of N-indolated amino acids or peptides from 2-alkynylanilines via a dearomatization process. Org Chem Front 2021. [DOI: 10.1039/d1qo01257f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A process for the rapid synthesis of N-indolated amino acids or peptides from readily available 2-alkynylanilines via dearomatization was reported.
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Affiliation(s)
- Weilian Qiu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Weiyi Wang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Yin Liu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center/Cancer Institute and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
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