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Dong Y, Lan MF, Lin YQ, Chen L, Wu CM, Wang ZF, Shi ZC, Deng GW, He B. Synthesis of Spiro Polycyclic N-Heterocycles and Indolecarbazoles via Merging Oxidative Coupling and Cascade Palladium-Catalyzed Intramolecular Oxidative Cyclization. J Org Chem 2024; 89:6474-6488. [PMID: 38607334 DOI: 10.1021/acs.joc.4c00545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
We report a step-economic strategy for the direct synthesis of spiro polycyclic N-heterocycles and indolecarbazole-fused naphthoquinones by merging oxidative coupling and cascade palladium-catalyzed intramolecular oxidative cyclization. In the protocol, bi-indolylnaphthoquinones were first synthesized by oxidative coupling of indoles and naphthoquinones. Subsequent cascade palladium-catalyzed intramolecular oxidative cyclization of bi-indolylnaphthoquinones gave spiro polycyclic N-heterocycles and indolecarbazoles. The intramolecular oxidative cyclization approach could also be realized by the presence or absence of iron catalysts under standard conditions. This protocol is featured with moderate to excellent yields, a wide substrate scope, and divergent structures of products.
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Affiliation(s)
- Yu Dong
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Mei-Feng Lan
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Yue-Qin Lin
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Lin Chen
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Chun-Mei Wu
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Zhi-Fan Wang
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Zhi-Chuan Shi
- Southwest Minzu University, Chengdu 610041, P. R. China
| | - Guo-Wei Deng
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
| | - Bing He
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University, Chengdu 611130, P. R. China
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Dong Y, Chen Y, Zhang ZY, Qian JH, Peng ZZ, Chang B, Shi ZC, Li ZH, He B. A one-pot access to 2-(N-substituted Amino)-Quinones or 3-indolyl-Quinones from naphthol/hydroquinone. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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Bhaskaran RP, Nayak KH, Sreelekha MK, Babu BP. Progress in copper-catalysed/mediated intramolecular dehydrogenative coupling. Org Biomol Chem 2023; 21:237-251. [PMID: 36448561 DOI: 10.1039/d2ob01796b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Transition metal-catalysed C-H functionalization reactions are one of the most efficient synthetic methodologies to construct carbon-carbon and carbon-heteroatom bonds. The initial developments in the field were largely dominated by expensive transition metal catalysts. However, in the past decade, the focus of the catalyst shifted to first-row transition metals and copper catalysis contributed significantly. Abundant, cost-effective, and less toxic copper catalysts are an ideal green alternative to palladium and similar metals. The intramolecular dehydrogenative coupling itself developed as a prominent area of focus as the strategy straightaway affords complex polycyclic scaffolds in one pot. Regioselective activation of inert C-H bonds were made possible with copper catalysts and interestingly, oxygen served as the terminal oxidant in most of the cases. In the present review the focus is on the intramolecular dehydrogenative coupling reactions between carbon-hydrogen and heteroatom-hydrogen bonds to afford carbon-carbon and carbon-hetero atom bonds, catalysed/mediated by copper salts. Though the intermolecular dehydrogenative coupling reactions of copper have already been reviewed more than once, to the best of our knowledge this is the first comprehensive account of copper-based intramolecular dehydrogenative coupling.
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Affiliation(s)
- Rasmi P Bhaskaran
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Kalinga H Nayak
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Mariswamy K Sreelekha
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Beneesh P Babu
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
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Zhao Y, Niu X, Yang H, Yang J, Wang Z, Wang Q. Substrate-directed divergent synthesis of fused indole polycycles through Rh(II)-catalyzed cascade reactions of bis(diazo)indolin-2-ones. Chem Commun (Camb) 2022; 58:8576-8579. [PMID: 35815947 DOI: 10.1039/d2cc02686d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a substrate-directed diverse synthetic strategy toward two kinds of structurally intriguing fused indole polycycles through Rh(II)-catalyzed cascade reactions of bis(diazo)indolin-2-ones with enaminones. The subtle structural changes in enaminones lead to different reactivities. Cyclic enaminones produce indolo[2,3-b]indoles, whereas acyclic ones afford oxazolo[3,2-a]indoles.
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Affiliation(s)
- Yang Zhao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
| | - Xinyue Niu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
| | - Hong Yang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
| | - Jing Yang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
| | - Zhizeng Wang
- Joint National Laboratory for Antibody Drug Engineering, Clinical Laboratory of the First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, 475004, China.
| | - Qilin Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
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Prasanna Kumari S, Philip Anthony S, Selva Ganesan S. One-pot synthesis of indole-fused nitrogen heterocycles via the direct C(sp 2)–H functionalization of naphthoquinones; accessibility for deep red emitting materials. NEW J CHEM 2022. [DOI: 10.1039/d2nj02024f] [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 convenient one-pot, two-step methodology was developed for the transformation of readily available planar naphthoquinone derivatives into structurally complex indole-fused nitrogen heterocycles under aerobic conditions.
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Affiliation(s)
- Subramaniyan Prasanna Kumari
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
| | - Savarimuthu Philip Anthony
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
| | - Subramaniapillai Selva Ganesan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
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Tran KM, Ho NT, Le TTT, Nguyen TT, Phan NTS. Copper‐Mediated (2‐Methylthio)aniline Directed Annulation of sp
2
C−H Bonds with Primary Anilines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Khoa M. Tran
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District, Ho Chi Minh City Vietnam
| | - Nhat T. Ho
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District, Ho Chi Minh City Vietnam
| | - Trang T. T. Le
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District, Ho Chi Minh City Vietnam
| | - Tung T. Nguyen
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District, Ho Chi Minh City Vietnam
| | - Nam T. S. Phan
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District, Ho Chi Minh City Vietnam
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