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Roy B, Kuila P, Sarkar D. Visible Light Promoted Brominative Dearomatization of Biaryl Ynones to Spirocycles. J Org Chem 2023; 88:10925-10945. [PMID: 37459885 DOI: 10.1021/acs.joc.3c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Bromine induced spiro cyclization of biaryl ynones facilitated the synthesis of spiro[5,5]trienones suitable for extended functionality at the C(3') position. Herein, a step-economic photo-oxidative brominative carbannulation of biaryl ynones employing ammonium bromide and riboflavin tetraacetate (RFTA) has been developed. The reactivity between distal phenyl C-H activated ortho-annulation and dearomative ipso-annulation is well exemplified. The eminent features of the methodology include metal-free, external additive free, low-loading photocatalyst (0.1 mol %), and use of a simple precursor.
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Affiliation(s)
- Barnali Roy
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Puspendu Kuila
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Debayan Sarkar
- Organic Synthesis and Molecular Engineering Laboratory, Department of Chemistry, Indian Institute of Technology Indore, Indore, Madhya Pradesh 453552, India
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2
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Dong Y, Luo LX, Hua C, He ZJ, Chen Y, Shi ZC, Li ZH, He B. 'On Water'-Promoted Three-Component Tandem Michael Addition/D-A Cycloaddition Reaction to Construct Polycyclic N-Heterocycles Derivatives. Chem Biodivers 2023; 20:e202300100. [PMID: 36930226 DOI: 10.1002/cbdv.202300100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/01/2023] [Indexed: 03/18/2023]
Abstract
'On Water'-promoted the three-component tandem Michael addition/D-A cycloaddition reaction in 80 °C at 3 h has been developed without employing any catalyst and organic solvent. The process allows facile access to polycyclic N-heterocycles derivatives contain indole and maleimide from easily accessible starting materials in moderate to high yields (up to 91 %). Compared with conventional reaction conditions, this reaction not only improves the reaction efficiency and rate but also minimizes the side reaction.
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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
| | - Liang-Xian Luo
- 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
| | - Chen Hua
- 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
| | - Ze-Jing 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
| | - Yong 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
| | - Zhi-Chuan Shi
- Southwest Minzu University, Chengdu, 610041, P. R. China
| | - Zhong-Hui Li
- 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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3
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Fallah-Mehrjardi M, Zare M. Preparation and Characterization of Bifunctional PEG/en Nanomagnetic Phase-Transfer Catalyst: Green Synthesis of 2-Amino-3-Cyano-4H-Pyrans. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2136219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Mehdi Fallah-Mehrjardi
- Department of Chemistry, Payame Noor University (PNU), Tehran, Iran
- Research Center of Environmental Chemistry, Payame Noor University (PNU), Ardakan, Iran
| | - Maryam Zare
- Department of Chemistry, Payame Noor University (PNU), Tehran, Iran
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Sobhani M, Villinger A, Ehlers P, Langer P. Regioselective Synthesis of Naphthothiophenes by Pd Catalyzed Cross-Coupling Reactions and Alkyne-Carbonyl Metathesis. J Org Chem 2022; 87:4560-4568. [PMID: 35275622 DOI: 10.1021/acs.joc.1c02838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Naphthothiophenes were prepared from commercially available 2,3-dibromothiophenes in two steps by one-pot Suzuki/Sonogashira or Sonogashira/Suzuki coupling reactions, followed by intramolecular alkyne-carbonyl-metathesis reactions. The final cyclization reaction proceeds in the presence of p-toluenesulfonic acid and provides a rapid access to two series of isomeric naphthothiophenes.
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Affiliation(s)
- Maryam Sobhani
- Institut für Chemie, Universität Rostock, A.-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Alexander Villinger
- Institut für Chemie, Universität Rostock, A.-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Peter Ehlers
- Institut für Chemie, Universität Rostock, A.-Einstein-Str. 3a, 18059 Rostock, Germany.,Leibniz Institut für Katalyse, Universität Rostock, A.-Einstein-Str.29 a, 18059 Rostock, Germany
| | - Peter Langer
- Institut für Chemie, Universität Rostock, A.-Einstein-Str. 3a, 18059 Rostock, Germany.,Leibniz Institut für Katalyse, Universität Rostock, A.-Einstein-Str.29 a, 18059 Rostock, Germany
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Wang B, Xu H, Zhang H, Zhang GM, Li FY, He S, Shi ZC, Wang JY. B(C6F5)3-catalyzed three-component tandem reaction to construct novel polycyclic quinone derivatives: synthesis of a carbonate salt chromogenic chemosensor. Org Chem Front 2021. [DOI: 10.1039/d1qo01199e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series novel polycyclic quinone derivatives were constructed providing a carbonate salt chromogenic chemosensor.
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Affiliation(s)
- Bei Wang
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hong Xu
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hua Zhang
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Guo-Ming Zhang
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fu-Yu Li
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Shuai He
- Southwest Minzu University, Chengdu 610041, PR China
| | - Zhi-Chuan Shi
- Southwest Minzu University, Chengdu 610041, PR China
| | - Ji-Yu Wang
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
- Department of Chemistry, Xihua University, China
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