1
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Li Y, Yang K, Cao L. Copper-catalyzed [3+3] annulation of ketones with oxime acetates for the synthesis of pyridines. RSC Adv 2022; 12:27546-27549. [PMID: 36276018 PMCID: PMC9516370 DOI: 10.1039/d2ra05050a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/19/2022] [Indexed: 09/19/2023] Open
Abstract
A novel and efficient copper-catalyzed strategy for the synthesis of diverse pyridines through the [3+3] annulation of ketones with oxime acetates has been reported. It is very convenient to obtain various unsymmetrical 2,6-diarylpyridines by changing different substrates. The rare copper-catalyzed direct difunctionalization of saturated ketones for the synthesis of nitrogen heterocycles is developed. This protocol has excellent functional group tolerance, readily available raw materials, high chemoselectivity and broad substrate scope.
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Affiliation(s)
- Yilin Li
- Guangzhou Darui Bio-technology Co. Ltd China
| | - Kai Yang
- College of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Liang Cao
- Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 Guangdong China
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2
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Wang Y, Zhang C, Li S, Liu L, Feng X. Recent Advances in Transition Metal Catalyzed Synthesis of
β
‐Enaminones and
β
‐Enaminoesters. ChemistrySelect 2022. [DOI: 10.1002/slct.202103345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yeming Wang
- Institute of Chemical and Industrial Bioengineering Jilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| | - Chaoqun Zhang
- Institute of Chemical and Industrial Bioengineering Jilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| | - Shizhe Li
- Institute of Chemical and Industrial Bioengineering Jilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| | - Lihui Liu
- Institute of Chemical and Industrial Bioengineering Jilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| | - Xiaodong Feng
- Institute of Chemical and Industrial Bioengineering Jilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
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3
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Wang J, Zhuang Y, Zhao J, Bi Y, Li C, Bi G, Yang K, Huang X, Zhang W. Copper-catalyzed direct sulfenoamination of saturated ketones via in situ formed enaminones. Org Biomol Chem 2022; 20:1749-1753. [PMID: 35142759 DOI: 10.1039/d1ob02469h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A sequential and efficient protocol for the synthesis of α-thiolated enaminones has been developed using copper-TEMPO systems. This reaction features a broad substrate scope to afford the desired product in good to excellent yields with high stereoselectivity. A preliminary mechanistic study suggests that the in situ formed enaminone acts as the key intermediate.
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Affiliation(s)
- Jiateng Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Yunqing Zhuang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Jie Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Yusong Bi
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Chunyan Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Gehua Bi
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Kai Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Xin Huang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
| | - Weimin Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, P. R. China.
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4
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Wan C, Pang JY, Jiang W, Zhang XW, Hu XG. Copper-Catalyzed Reductive Ring-Cleavage of Isoxazoles: Synthesis of Fluoroalkylated Enaminones and Application for the Preparation of Celecoxib, Deracoxib, and Mavacoxib. J Org Chem 2021; 86:4557-4566. [PMID: 33586981 DOI: 10.1021/acs.joc.0c02980] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have identified a new reactivity of copper/diamine catalysis for the reductive ring-cleavage of isoxazoles to yield fluoroalkylated enaminones. This protocol has the advantage of using commercially available reagents, ease of setting up, broad tolerance of functionality, and is regiospecific and free of defluorination and reduction of reducible functional groups. The utility was demonstrated by a one-step, regioselective synthesis of fluoroalkylated pyrazole-based drugs such as celecoxib, deracoxib, and mavacoxib.
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Affiliation(s)
- Chao Wan
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China
| | - Jian-Yu Pang
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China
| | - Wei Jiang
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330006, PR China
| | - Xiao-Wei Zhang
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China.,School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xiang-Guo Hu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China.,Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, PR China
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5
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Zhao JG, Wang DH. β-Selective Cu(II)-Catalyzed Dehydrogenative Enamination of Alkylbenzenes. Org Lett 2020; 22:9473-9477. [PMID: 33237776 DOI: 10.1021/acs.orglett.0c03430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A Cu(II)-catalyzed dehydrogenative enamination that couples alkyl-substituted electron-rich arenes and N-fluorobenzenesulfonimide to forge enamine products is reported. This C-N bond-forming procedure occurs selectively at the β-position of the alkyl group. Both aniline and anisole derivatives are tolerated under these conditions, to afford styryl amines. A reaction mechanism involving quinone methide and styrene intermediates is proposed.
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Affiliation(s)
- Jian-Guo Zhao
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China
| | - Dong-Hui Wang
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China.,School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Rd., Nanjing 210023, People's Republic of China
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6
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Liang X, Xiong M, Zhu H, Shi K, Zhou Y, Pan Y. Copper/Palladium Bimetallic System for the Synthesis of Isobenzofuranones through [4 + 1] Annulation between Propiophenones and Benzoic Acids. Org Lett 2020; 22:9568-9573. [DOI: 10.1021/acs.orglett.0c03627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xiao Liang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
| | - Mingteng Xiong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
| | - Heping Zhu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
| | - Keqiang Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
| | - Yifeng Zhou
- College of Life Sciences, China Jiliang University, Hangzhou 310018, Zhejiang, P. R. China
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
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7
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Aneeja T, Neetha M, Afsina CMA, Anilkumar G. Progress and prospects in copper-catalyzed C-H functionalization. RSC Adv 2020; 10:34429-34458. [PMID: 35514395 PMCID: PMC9056871 DOI: 10.1039/d0ra06518h] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/02/2020] [Indexed: 01/21/2023] Open
Abstract
Copper-catalyzed C-H functionalization is becoming a significant area in organic chemistry. Copper is now widely used as a catalyst in organic synthesis as it is inexpensive and not very toxic. Functionalization of C-H bonds to construct wide varieties of organic compounds has received much attention in recent times. This review focuses on the recent advances in Cu-catalyzed C-H functionalization and covers literature from 2018-2020.
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Affiliation(s)
- Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - C M A Afsina
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India
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8
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R S R, Sugunan A, S R, Suresh CH, Rajendar G. A Method for the Preparation of β-Amino-α,β-unsaturated Carbonyl Compounds: Study of Solvent Effect and Mechanism. Org Lett 2020; 22:1040-1045. [PMID: 31990197 DOI: 10.1021/acs.orglett.9b04531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient method for the preparation of β-amino-α,β-unsaturated carbonyl compounds is demonstrated. Bench-stable sodium 3-oxo-enolates were prepared from carbonyl compounds, and reacted with amines in the presence of an acid and a desiccant. DFT studies revealed contrasting mechanisms toward the reactivity of aliphatic amines in protic solvents and aromatic amines in aprotic solvents. While the former proceeds through the formation of an imine, the latter passes through the Michael addition-elimination mechanism.
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Affiliation(s)
- Reyno R S
- School of Chemistry , Indian Institute of Science Education and Research , Thiruvananthapuram , Kerala 695551 , India
| | - Akash Sugunan
- School of Chemistry , Indian Institute of Science Education and Research , Thiruvananthapuram , Kerala 695551 , India
| | - Ranganayakulu S
- School of Chemistry , Indian Institute of Science Education and Research , Thiruvananthapuram , Kerala 695551 , India
| | - Cherumuttathu H Suresh
- Chemicals Sciences and Technology Division , CSIR-NIIST , Thiruvananthapuram , Kerala 695564 , India
| | - Goreti Rajendar
- School of Chemistry , Indian Institute of Science Education and Research , Thiruvananthapuram , Kerala 695551 , India
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9
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Liang X, Xiong M, Zhu H, Shen K, Pan Y. Aerobic Copper-Catalyzed Synthesis of (E)-Vinyl Sulfones by Direct C–S Bond Oxidative Coupling. J Org Chem 2019; 84:11210-11218. [DOI: 10.1021/acs.joc.9b01400] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiao Liang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Mingteng Xiong
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Heping Zhu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Kexin Shen
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
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10
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Wang T, Chen G, Lu Y, Chen Q, Huo Y, Li X. Intermolecular Multiple Dehydrogenative Cross‐Couplings of Ketones with Boronic Acids and Amines via Copper Catalysis. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900419] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tianzhang Wang
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 People's Republic of China
| | - Guowei Chen
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 People's Republic of China
| | - Yu‐Jing Lu
- School of Biomedical and Pharmaceutical SciencesGuangdong University of Technology Guangzhou 510006 People's Republic of China
| | - Qian Chen
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 People's Republic of China
| | - Yanping Huo
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 People's Republic of China
| | - Xianwei Li
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou 510006 People's Republic of China
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11
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Andna L, Miesch L. Metal-free synthesis of activated ynesulfonamides and tertiary enesulfonamides. Org Biomol Chem 2019; 17:5688-5692. [PMID: 31134243 DOI: 10.1039/c9ob00947g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An operationally simple synthesis of activated ynesulfonamides and enesulfonamides is described. Ynesulfonamides can be obtained through reaction of sulfonylamides with activated bromoalkynes and Triton B in a short time at room temperature. Likewise, terminal alkynes react with sulfonylamides to provide enesulfonamides. Z/E enesulfonamides can be transformed exclusively into E enesulfonamides.
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Affiliation(s)
- Lucile Andna
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie, CNRS-UdS UMR 7177, 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France.
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12
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Wu W, Wang Z, Shen Q, Liu Q, Chen H. Fe-Catalyzed enaminone synthesis from ketones and amines. Org Biomol Chem 2019; 17:6753-6756. [DOI: 10.1039/c9ob01137d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel Fe-catalyzed β-functionalization of ketones with amines for constructing enaminones has been demonstrated.
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Affiliation(s)
- Wenfeng Wu
- School of Traditional Chinese Medicine
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Zhuxian Wang
- School of Traditional Chinese Medicine
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Qun Shen
- School of Traditional Chinese Medicine
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Qiang Liu
- School of Traditional Chinese Medicine
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Huoji Chen
- School of Traditional Chinese Medicine
- Southern Medical University
- Guangzhou 510515
- P. R. China
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