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Yang JM, Yao ML, Li JC, Liu JK, Wu B. Access to Azepino-Annulated Benzo[ c]carbazoles Enabled by Gold-Catalyzed Hydroarylation of Alkynylindoles and Subsequent Oxidative Cyclization. Org Lett 2022; 24:6505-6509. [PMID: 36047768 DOI: 10.1021/acs.orglett.2c02293] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a facile and efficient synthetic method to construct azepino[1,2-a]indoles through a novel gold(I)-catalyzed intramolecular hydroarylation of alkynylindoles. A wide range of functional groups can be well tolerated in this transformation, and the corresponding highly functionalized azepino[1,2-a]indole skeletons were obtained in moderate to excellent yields. Subsequent oxidation of the products gave the interesting and valuable polycyclic carbazoles, which were widely used as the key building blocks in materials science.
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Affiliation(s)
- Jin-Ming Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China
| | - Meng-Lian Yao
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China
| | - Jun-Chi Li
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China
| | - Bin Wu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China
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3
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Bag D, Sawant SD. Heteroarene-tethered Functionalized Alkyne Metamorphosis. Chemistry 2021; 27:1165-1218. [PMID: 32603015 DOI: 10.1002/chem.202002154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Indexed: 12/11/2022]
Abstract
Heteroarene-tethered functionalized alkynes are multipotent synthons in organic chemistry. This detailed Review described herein offers a thorough discussion of the metamorphosis of heteroarene-tethered functionalized alkynes, an area which has earned much attention over the past decade in the straightforward synthesis of architecturally complex heterocyclic scaffolds in atom and step economic manner. Depending upon the variety of functionalized alkynes, this Review is divided into multiple sections. Amongst the vast array of synthetic transformations covered, dearomatizing spirocyclizations and cascade spirocyclization/rearrangement are of great interest. Synthetic transformations involving the heteroarene-tethered functionalized alkynes with scope, challenges, limitations, mechanism, their application in the total synthesis of natural products and future perceptions are surveyed.
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Affiliation(s)
- Debojyoti Bag
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
| | - Sanghapal D Sawant
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
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4
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Kawada Y, Ohmura S, Kobayashi M, Nojo W, Kondo M, Matsuda Y, Matsuoka J, Inuki S, Oishi S, Wang C, Saito T, Uchiyama M, Suzuki T, Ohno H. Direct synthesis of aryl-annulated [ c]carbazoles by gold(i)-catalysed cascade reaction of azide-diynes and arenes. Chem Sci 2018; 9:8416-8425. [PMID: 30542591 PMCID: PMC6244455 DOI: 10.1039/c8sc03525c] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/08/2018] [Indexed: 01/01/2023] Open
Abstract
The gold-catalysed annulation of conjugated alkynes bearing an azido group with arenes gave annulated [c]carbazoles. Using benzene, pyrrole, and indole derivatives as the nucleophiles, benzo[c]-, pyrrolo[2,3-c]-, and indolo[2,3-c]carbazoles were produced, respectively. The reaction proceeded through pyrrole and benzene ring construction accompanied by the formation of two carbon-carbon and one carbon-nitrogen bond and the cleavage of two aromatic C-H bonds. The mechanism of the reaction with pyrrole was investigated by density functional theory calculations. N,N'-dimethylated indolo[2,3-c]carbazole showed dual ultraviolet-visible-near-infrared and fluorescence spectral changes upon electrolysis.
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Affiliation(s)
- Yuiki Kawada
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Shunsuke Ohmura
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Misaki Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Wataru Nojo
- Department of Chemistry , Faculty of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Masaki Kondo
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
- Cluster of Pioneering Research (CPR) , Advanced Elements Chemistry Laboratory , RIKEN, 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Yuka Matsuda
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Junpei Matsuoka
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Chao Wang
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
- Cluster of Pioneering Research (CPR) , Advanced Elements Chemistry Laboratory , RIKEN, 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Tatsuo Saito
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
- Cluster of Pioneering Research (CPR) , Advanced Elements Chemistry Laboratory , RIKEN, 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Takanori Suzuki
- Department of Chemistry , Faculty of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan .
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5
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Ogawa N, Yamaoka Y, Takikawa H, Tsubaki K, Takasu K. Synthesis and Properties of Tribenzocarbazoles via an Acid-Promoted Retro (2+2)-Cycloaddition of Azapropellanes. J Org Chem 2018; 83:7994-8002. [DOI: 10.1021/acs.joc.8b00870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Ogawa
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroshi Takikawa
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kazunori Tsubaki
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogano, Sakyo-ku, Kyoto 606-8522, Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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6
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Xu G, Cao J, Zhao Y, Zheng L, Tao M, Zhang W. Phosphorylated Polyacrylonitrile Fibers as an Efficient and Greener Acetalization Catalyst. Chem Asian J 2017; 12:2565-2575. [PMID: 28727264 DOI: 10.1002/asia.201700846] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/15/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Gang Xu
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
| | - Jian Cao
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
| | - Yali Zhao
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
| | - Lishuo Zheng
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
| | - Minli Tao
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
| | - Wenqin Zhang
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 China
- Department of Chemistry; School of Science; Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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