1
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Zhang X, Chang M, Ni T, Liu S, Li W, Xu X. CuBr 2-mediated dehydrogenative [4+2] annulation of 1-naphthyl-1,3-indandiones and alkenes. Chem Commun (Camb) 2024; 60:9070-9073. [PMID: 39101974 DOI: 10.1039/d4cc02386b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Intermolecular annulation reactions of 1-naphthyl-1,3-indandiones with alkenes proceed efficiently in the presence of a copper catalyst to generate spirocarbocycle compounds. Various spirocyclic molecules bearing an all-carbon quaternary center could be obtained by this novel method with good yields, excellent regioselectivity, and good functional group tolerance. A radical mechanism is proposed based on the HRMS analysis results of control experiments.
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Affiliation(s)
- Xu Zhang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Mengfan Chang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Tongtong Ni
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Shuhan Liu
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Wenguang Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Xuefeng Xu
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
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2
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Zhang J, Liu C, Wu J, Tan X, Wu W, Jiang H. Palladium-Catalyzed Annulation of Tertiary Anilines with 3-Butenoic Acid via Dual C-H Bond Activation. Org Lett 2024; 26:4422-4426. [PMID: 38767940 DOI: 10.1021/acs.orglett.4c00880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Catalytic cyclization via dual C-H bond activation has evolved as a powerful strategy for building bi- and polycyclic molecules. Herein, a palladium-catalyzed annulation of tertiary anilines with 3-butenoic acid via N-α-C(sp3)-H and ortho-C(sp2)-H activation is described. The remarkable characteristics of this reaction include excellent diastereoselectivity, broad substrate scope, and good tolerance for some highly sensitive groups. In addition, the KIE experiment suggested that the C-H bond abscission is not the turnover-limiting step.
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Affiliation(s)
- Jinhui Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chao Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jiahao Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiangwen Tan
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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3
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Wu WQ, Shi H. Transition-Metal-Catalyzed Dehydrogenative (3 + 2) Annulation of Aromatic Compounds: Synthesis of Indenes and Indanes via Dual Functionalization of Benzylic and ortho C-H Bonds. J Org Chem 2023; 88:14264-14273. [PMID: 37811870 DOI: 10.1021/acs.joc.3c01877] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Intermolecular (3 + 2) annulation emerges as a potent approach for constructing 5-membered carbocycles through the fusion of two distinct components. This synopsis encapsulates recent strides in the realm of transition-metal-catalyzed dehydrogenative (3 + 2) annulation of aromatic hydrocarbons, achieved through the dual functionalization of benzylic and ortho C-H bonds. Encompassing three pivotal strategies, namely, (i) C-H bond activation, (ii) benzylic oxidation, and (iii) π-coordination activation, this review offers an overview of the field's recent developments.
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Affiliation(s)
- Wen-Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou 310030, Zhejiang Province, China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou 310030, Zhejiang Province, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
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4
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Dhanwant K, Saini A, Chivers T, Thirumoorthi R. Temperature-Assisted Generation of Arylmethyl Radicals from Bis(arylmethyl)tin Dichlorides: Efficient Reagents for C s p 3 ${{{\bf C}}_{{{\bf s p}}^{3}}}$ - C s p 2 ${{{\bf C}}_{{{\bf s p}}^{2}}}$ Bond-Forming Reactions. Chemistry 2023; 29:e202202844. [PMID: 36512637 DOI: 10.1002/chem.202202844] [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: 09/12/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
The oxidative-addition reaction between an arylmethyl chloride (RCH2 Cl; R=1-C10 H7 , 2,4,6-Me3 C6 H2 , 4-MeC6 H4 , 3-MeC6 H4 , C6 H5 , 4-ClC6 H4 ) and tin powder in boiling toluene produces bis(arylmethyl)tin dichlorides, [(RCH2 )2 SnCl2 ] in good yields. At 160 °C in mesitylene bis(1-naphthylmethyl)tin dichloride undergoes Sn-C homolytic cleavage to generate two 1-naphthylmethyl radicals (1-C10 H7 CH2 ⋅) which were trapped by TEMPO (C9 H8 NO⋅). Subsequently, the radicals (RCH2 ⋅) produced in this manner were utilized for efficient substitution reactions with electron-rich arenes (R'H; R'=2,4,6-Me3 C6 H2 , 1,2,4,5-Me4 C6 H, 1,2,3,4,5-Me5 C6 ) to obtain a variety of unsymmetrical diarylmethanes (RR'CH2 ). The addition of one equivalent of iodine (I2 ) to the reaction mixture resulted in a significant increase in the yields of coupled products.
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Affiliation(s)
- Kisturi Dhanwant
- Department of Chemistry, Central University of Rajasthan, NH8, Bandarsindri, Ajmer, 305817, India
| | - Aarti Saini
- Department of Chemistry, Central University of Rajasthan, NH8, Bandarsindri, Ajmer, 305817, India
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, Calgary, AB, T2 N 1 N4, Canada
| | - Ramalingam Thirumoorthi
- Department of Chemistry, Central University of Rajasthan, NH8, Bandarsindri, Ajmer, 305817, India
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5
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Li Z, Cao Y, Chen L, Rong D, Huang G, Xie Y. Copper-catalyzed radical cascade cyclization: Synthesis of benzylated benzimidazo [2,1-a]isoquinoline-6(5H)-ones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Lu H, Zhou C, Wang Z, Kato T, Liu Y, Maruoka K. Fe-Catalyzed Three-Component Coupling Reaction of α,β,γ,δ-Unsaturated Carbonyl Compounds and Conjugate Dienes with Alkylsilyl Peroxides and Nucleophiles. J Org Chem 2022; 87:8824-8834. [PMID: 35731735 DOI: 10.1021/acs.joc.2c00885] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An Fe(OTf)2-catalyzed three-component coupling reaction of α,β,γ,δ-unsaturated carbonyl compounds with alkylsilyl peroxides in the presence of certain heteronucleophiles (ROH and indole) is realized under mild reaction conditions. A variety of α,β,γ,δ-diene carbonyl substrates with different substituents were successfully employable via combination with several different alkylsilyl peroxides. This new approach is also applicable to the double functionalization of diene substrates.
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Affiliation(s)
- Hanbin Lu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Canhua Zhou
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhe Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Terumasa Kato
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China.,Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo 606-8501, Kyoto, Japan
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, China.,Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo 606-8501, Kyoto, Japan
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7
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Cai T, Zhang Z, Li P, Sun T, Chen X, Ni Y, Chen J, Xu H, Xu Y, Wu C, Shen R, Gao Y. Radical Cascade Bicyclization/Aromatization of 1,7‐Enynes with 1,3‐Dicarbonyl Compounds towards 2,3‐Dihydro‐1
H
‐cyclopenta[
a
]naphthalenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Tao Cai
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Zhebing Zhang
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
| | - Peiqin Li
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
| | - Tao Sun
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
| | - Xinyu Chen
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
| | - Yuqi Ni
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
| | - Jianhui Chen
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Huiting Xu
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Yanfei Xu
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Chunlei Wu
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Runpu Shen
- College of Chemistry and Chemical Engineering Shaoxing University Shaoxing 312000 People's Republic of China
- Zhejiang Engineering Research Center of Fat-Soluble Vitamin Shaoxing 312000 People's Republic of China
| | - Yuzhen Gao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
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8
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Zhao F, Qiao J, Lu Y, Zhang X, Dai L, Liu S, Ni H, Jia X, Wu X, Lu S. Redox-Neutral Rhodium(III)-Catalyzed Chemospecific and Regiospecific [4+1] Annulation between Indoles and Alkenes for the Synthesis of Functionalized Imidazo[1,5- a]indoles. J Org Chem 2021; 86:10591-10607. [PMID: 34297561 DOI: 10.1021/acs.joc.1c01256] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Exploiting internal alkenes embedded with an oxidizing function/leaving group as a rare and unconventional one-carbon unit, a redox-neutral rhodium(III)-catalyzed chemo- and regiospecific [4+1] annulation between indoles and alkenes for the synthesis of functionalized imidazo[1,5-a]indoles has been achieved. Internal alkenes employed here can fulfill an unusual [4+1] annulation rather than normal [4+2] annulation/C-H alkenylation. This method is characterized by excellent chemo- and regioselectivity, broad substrate scope, good functional group tolerance, good to high yields, and redox-neutral conditions.
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Affiliation(s)
- Fei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China.,Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Jin Qiao
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Yangbin Lu
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Xiaoning Zhang
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Long Dai
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Siyu Liu
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Hangcheng Ni
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
| | - Xiuwen Jia
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Xiaowei Wu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China.,Zhongshan Institute for Drug Discovery, the Institutes of Drug Discovery and Development, Chinese Academy of Sciences, Zhongshan 528400, P. R. China
| | - Shiyao Lu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China.,Jinhua Branch, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Jinhua 321007, P. R. China
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9
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Jiang T, Liu H, Zhang H, Huang H. Catalytic Benzylation Reactions: From C—H Bond Activation to C—N Bond Activation. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tianxiao Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei Anhui 230026 China
| | - Hongchi Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei Anhui 230026 China
| | - Haocheng Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei Anhui 230026 China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei Anhui 230026 China
- Center for Excellence in Molecular Synthesis of CAS, Hefei Anhui 230026 China
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10
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Zhu B, Han H, Su W, Yu C, Jiang X. Free‐radical Initialized Cyclization of 2‐(3‐Arylpropioloyl)benzaldehydes with Toluene Derivatives: Access to Benzylated 1,4‐Naphthoquinones via Copper‐Catalyzed Cascade Reaction. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000975] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Bingbin Zhu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Hang Han
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Wei‐Ke Su
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Xinpeng Jiang
- College of pharmaceutical sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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11
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Chu X, Ge D, Wang M, Rao W, Loh T, Shen Z. Chemo‐ and Regioselective Ring Construction Driven by Visible‐Light Photoredox Catalysis: an Access to Fluoroalkylated Oxazolidines Featuring an All‐Substituted Carbon Stereocenter. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900585] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xue‐Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Mao‐Lin Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Teck‐Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 People's Republic of China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Zhi‐Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 People's Republic of China
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12
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Dong Y, Yang J, He S, Shi ZC, Wang Y, Zhang XM, Wang JY. Metal-free oxidative cross-dehydrogenative coupling of quinones with benzylic C(sp3)–H bonds. RSC Adv 2019; 9:27588-27592. [PMID: 35529195 PMCID: PMC9070767 DOI: 10.1039/c9ra05678e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 08/28/2019] [Indexed: 12/23/2022] Open
Abstract
A metal-free cross-dehydrogenative coupling of quinones with toluene derivatives has been established. A series of quinones were subjected to reaction with toluene derivatives in the presence of di-tertbutyl peroxide (DTBP) for direct synthesis of benzylquinones. The method exhibits good functional group tolerance, and desired products were obtained in moderate to good yields. Meanwhile, a radical pathway was proposed to describe the cross-dehydrogenative coupling of quinones with toluene derivatives. A metal-free cross-dehydrogenative coupling of quinones with toluene derivatives has been established. A series of quinones were subjected to reaction with toluene derivatives in the presence of DTBP for direct synthesis of benzylquinones.![]()
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Affiliation(s)
- Yu Dong
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of Chinese Academy of Sciences
| | - Jian Yang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of Chinese Academy of Sciences
| | - Shuai He
- Southwest Minzu University
- Chengdu 610041
- P. R. China
| | | | - Yu Wang
- Guizhou Education University
- Guiyang 550018
- P. R. China
| | - Xiao-Mei Zhang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
| | - Ji-Yu Wang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
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13
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Jiang B, Liang QJ, Han Y, Zhao M, Xu YH, Loh TP. Copper-Catalyzed Dehydrogenative Diels-Alder Reaction. Org Lett 2018; 20:3215-3219. [PMID: 29790760 DOI: 10.1021/acs.orglett.8b01067] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A practical and effective copper-catalyzed dehydrogenative Diels-Alder reaction of gem-diesters and ketone with dienes has been established. The active dienophiles were generated in situ via a radical-based dehydrogenation process, which reacted with a wide variety of dienes to afford various polysubstituted cyclohexene derivatives in good to excellent yields.
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Affiliation(s)
- Bing Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Qiu-Ju Liang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yu Han
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Meng Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yun-He Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Teck-Peng Loh
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China.,Institute of Advanced Synthesis, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 210009 , P. R. China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
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14
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Yu H, Hu B, Huang H. Nickel-Catalyzed Alkylarylation of Activated Alkenes with Benzyl-amines via C-N Bond Activation. Chemistry 2018. [PMID: 29517114 DOI: 10.1002/chem.201800543] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A nickel-catalyzed alkylarylation of active alkenes with tertiary benzylamines was achieved by charge-transfer-complex promoted C-N bond activation. The reaction proceeded through initial Ni-catalyzed C-N bond activation, followed by sequential radical addition, redox and proton abstraction with cleaved amine moiety in the absence of oxidant, and provides an efficient method to prepare various alkyl-substituted oxindoles and dihydroquinolinones in good yields.
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Affiliation(s)
- Hui Yu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Bin Hu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China
| | - Hanmin Huang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China.,Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, 230026, P.R. China
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