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Wen Y, Jin HX, Qiu YH, Zong Y, Luo W, Chen Z, Yu D. Photo-induced tungsten-catalyzed cascade synthesis of pyrrolo[2,1- a]isoquinoline-1,3-dicarboxylate and its reaction mechanism. Chem Commun (Camb) 2024; 60:4573-4576. [PMID: 38572995 DOI: 10.1039/d4cc00169a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
A pyrrolo[2,1-a]isoquinoline core structure is prevalent in marine and other natural products. This article describes a tungsten-catalyzed [3+2] cycloaddition aromatization of dihydroisoquinoline ester and maleic anhydride or an acrylate. The photochemical reaction tolerates a range of functional groups such as ester, cyano, ketone, bromide, and alkene. It is shown that the cycloaddition-aromatization of 2-substitued acrylate catalyzed by a tungsten photocatalyst can be used to evaluate the leaving ability of the leaving group. Experiments done to determine the reaction mechanism revealed that the formation of an ion-pair intermediate generated in situ from dihydroisoquinoline ester and (Z)-4-methoxy-4-oxobut-2-enoic acid via the solvolysis of maleic anhydride with methanol is crucial for the cascade process to occur. The key cycloadduct acid intermediate derived from [3+2] cycloaddition was isolated and determined by X-ray crystallography.
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Affiliation(s)
- Yongshun Wen
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Hong-Xian Jin
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Yan-Hua Qiu
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Yingtong Zong
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Wenjun Luo
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Zhengwang Chen
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
| | - Daohong Yu
- Key laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China.
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Cui HL, Chen XH. Synthesis of Pyrrolo[2,1- a]isoquinolines through Cu-Catalyzed Condensation/Addition/Oxidation/Cyclization Cascade. J Org Chem 2022; 87:15435-15447. [PMID: 36315447 DOI: 10.1021/acs.joc.2c01978] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have developed a copper-catalyzed synthesis of pyrrolo[2,1-a]isoquinolines with terminal alkynes, aldehydes, and tetrahydroisoquinolines. A variety of pyrrolo[2,1-a]isoquinolines have been prepared in 17-69% yield via a condensation/Mannich-type addition/oxidation/cyclization cascade sequence. Modifications through simple chemical transformations provided highly functionalized molecules containing a privileged framework.
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Affiliation(s)
- Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
| | - Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P.R. China
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3
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Abstract
Pyrrolo[2,1-a]isoquinolines occur frequently in a large number of bioactive natural products and pharmaceutically important molecules. The synthesis of pyrrolo[2,1-a]isoquinoline derivatives is an easy and useful way to produce artificial molecules with potential applications. A huge number of excellent methodologies for constructing pyrrolo[2,1-a]isoquinolines have been reported in the last decade. This review summarizes the recent advances in this research field covering from 2011 to 2021.
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Affiliation(s)
- Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
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4
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Runemark A, Sundén H. Aerobic Oxidative EDA Catalysis: Synthesis of Tetrahydroquinolines Using an Organocatalytic EDA Active Acceptor. J Org Chem 2022; 87:1457-1469. [PMID: 35005960 PMCID: PMC8790759 DOI: 10.1021/acs.joc.1c02776] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 12/17/2022]
Abstract
A catalytic electron donor-acceptor (EDA) complex for the visible-light-driven annulation reaction between activated alkenes and N,N-substituted dialkyl anilines is reported. The key photoactive complex is formed in situ between dialkylated anilines as donors and 1,2-dibenzoylethylene as a catalytic acceptor. The catalytic acceptor is regenerated by aerobic oxidation. Investigations into the mechanism are provided, revealing a rare example of a catalytic acceptor in photoactive EDA complexes that can give access to selective functionalization of aromatic amines under mild photochemical conditions.
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Affiliation(s)
- August Runemark
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden
| | - Henrik Sundén
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden
- Chemistry
and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg, Sweden
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5
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Yu Z, Tang X, Huang C, Shang Y, Li YJ, Han L, Ye Q. CuI-Promoted [3+2] Cycloaddition/oxidation to construct Pyrrolo[2,1a]isoquinolino-quinones from naphthoquinone and tetrahydroisoquinoline. Synlett 2022. [DOI: 10.1055/a-1729-6586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The copper-catalyzed three-component one-pot 1,3-dipole cycloaddition/oxidation has been developed to construct Pyrrolo[2,1-a]isoquinolinoquinone derivatives with environmentally friendly oxygen as the oxidant. The products Pyrrolo[2,1-a]isoquinolinoquinones were obtained from the naturally available raw materials tetrahydroisoquinoline, 1,4-naphthoquinone and benzaldehyde with medium yields.
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Affiliation(s)
- Zihua Yu
- College of Chemical Engineering, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Xue Tang
- College of Chemical Engineering, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Chenxi Huang
- College of Chemical Engineering, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Yehan Shang
- College of Chemical Engineering, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Yu-Jin Li
- College of Chemical Engineering and Materials Science, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Liang Han
- college of chemical engineering, Zhejiang University of Technology Chaohui Campus, Hangzhou, China
| | - Qing Ye
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
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Yu D, Liu Y, Che CM. Tungsten catalysed decarboxylative [3 + 2] cycloaddition aromatization: one-pot synthesis of trifluoromethyl-pyrrolo[2,1- a]isoquinolines with visible light irradiation. Org Chem Front 2022. [DOI: 10.1039/d2qo00401a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Trifluoromethyl-pyrrolo[2,1-a]isoquinolines, which are difficult to prepare via traditional methods, could be readily prepared via a tungsten-catalysed decarboxylative [3 + 2] cycloaddition aromatization process.
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Affiliation(s)
- Daohong Yu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, 341000, China
| | - Yungen Liu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Chi-Ming Che
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, 518055, China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F, Building 17W, Hong Kong Science and Technology Parks, New Territories, Hong Kong, China
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Li D, Jia J, Zhao X, Zhang Z, Wang H, Li S, Xu Z, Xie Z. Electrochemical Oxidation Cross Dehydrogenative Coupling of Enamines and Thiophenols for the Synthesis of Vinyl Sulfides. ChemistrySelect 2021. [DOI: 10.1002/slct.202101541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dandan Li
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Jingpeng Jia
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Xiaowei Zhao
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Zixuan Zhang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Huimin Wang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Shuaibing Li
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Zhihong Xu
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
| | - Zhiyu Xie
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering Xuchang University Henan 461000 P. R. China
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