1
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Zhou X, Wang J, Ma D, Shen Y, Zhao Y, Wu J. Electrochemical synthesis of phosphorylated azaspiro[4.5]di/trienones through dearomative spirocyclization. Chem Commun (Camb) 2024. [PMID: 38916454 DOI: 10.1039/d4cc02638a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Cp2Fe-mediated electrochemical synthesis of a diverse array of phosphorylated azaspiro[4.5]di/trienones has been developed, which demonstrated broad substrate scope and good diastereoselectivity. It represents the first example of electrochemical synthesis of phosphorylated azaspiro[4.5]di/trienones, circumventing the need for external oxidants and high temperatures. Moreover, a plausible mechanism including radical-initiated dearomative cyclization driven by ferrocenium cations has been provided, which was supported by the related mechanistic study.
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Affiliation(s)
- Xiaocong Zhou
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang, China.
| | - Jian Wang
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang, China.
| | - Dumei Ma
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China
| | - Yirui Shen
- School of Materials and Chemical Engineering, Ningbo University of Technology, 315211 Ningbo, Zhejiang, China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang, China.
- College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen, Fujian, China
| | - Ju Wu
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang, China.
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2
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Zhang Z, Lu L, Li G, Sheng X, Zhang Y, Yang L, Zhao J, Xie L, Li J, Sun K. Radical cascade silylation/cyclization of 1,7-dienes to access silyl-substituted benzo[ b]azepin-2-ones. Chem Commun (Camb) 2024; 60:4206-4209. [PMID: 38523529 DOI: 10.1039/d4cc00499j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
A novel silyl radical-induced cascade silylation/cyclization of 1,7-dienes has been realized employing readily available hydrosilanes as a silicon source and Cu(I) salt as a catalyst. This protocol introduces diverse silicon fragments into a challenging 7-membered ring structure and provides an efficient approach to a wide array of biologically important silyl-substituted benzo[b]azepin-2-ones. Several control experiments suggest that the reaction undergoes a free radical process. The gram-scale synthesis and late-stage transformations further demonstrate the scalability and applicability of the reaction in organic synthesis.
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Affiliation(s)
- Zhen Zhang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lichao Lu
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Guiling Li
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Xiaoyu Sheng
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Yijia Zhang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Jiaqi Zhao
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Jiazhu Li
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Kai Sun
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
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3
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Pal PP, Ghosh S, Hajra A. Recent advances in carbosilylation of alkenes and alkynes. Org Biomol Chem 2023; 21:2272-2294. [PMID: 36852639 DOI: 10.1039/d3ob00230f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Alkene and alkyne difunctionalization is a flexible process that allows the construction of two functional groups simultaneously in one step. On the other hand, carbosilylation, an ingenious difunctionalization pathway to concurrently incorporate both a silyl group and an organic functional group (alkyl, (hetero)aryl, alkenyl, alkynyl and allenyl) across a carbon-carbon multiple-bond system, is achieving immense interest in recent days. This review article provides a decade's update on the discoveries and developments in the synthesis of carbosilylated products from two very important carbon-carbon unsaturated substrates, alkenes and alkynes.
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Affiliation(s)
- Prajna Paramita Pal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
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4
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Wan Q, Hou ZW, Zhao XR, Xie X, Wang L. Organoelectrophotocatalytic C-H Silylation of Heteroarenes. Org Lett 2023; 25:1008-1013. [PMID: 36735345 DOI: 10.1021/acs.orglett.3c00144] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An organoelectrophotocatalytic approach for the C-H silylation of heteroarenes through dehydrogenation cross-coupling with H2 evolution has been developed. The organoelectrophotocatalytic strategy is carried out under a simple and efficient monocatalytic system by employing 9,10-phenanthrenequinone both as an organocatalyst and as a hydrogen atom transfer (HAT) reagent, which avoids the need for an external HAT reagent, an oxidant, or a metal reagent. A variety of heteroarenes can be compatible in satisfactory yields with excellent regioselectivity.
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Affiliation(s)
- Qinhui Wan
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P. R. China.,Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Zhong-Wei Hou
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P. R. China
| | - Xin-Ru Zhao
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P. R. China
| | - Xiaoyu Xie
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P. R. China.,Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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5
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Wei G, Zhang J, Wang H, Chen Z, Wu XF. Radical selenylative cyclization of trifluoromethyl propargyl imines for the synthesis of trifluoromethyl- and seleno-azaspiro[4,5]-tetraenones and quinolines. Org Biomol Chem 2023; 21:284-288. [PMID: 36484764 DOI: 10.1039/d2ob02033e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
A radical selenylative cyclization of trifluoromethyl propargyl imines with diselenides for the regiodivergent construction of diversely functionalized azaspiro[4,5]-tetraenones and quinolines has been developed, which enables dual incorporation of CF3 and Se groups into heterocycles in a one-pot reaction. When using Oxone as a green oxidant, the reaction proceeds through oxidative dearomative ipso-annulation or intramolecular ortho-annulation exhibiting good regioselectivity. The synthetic utility of this method is demonstrated by a scale-up reaction and further modification of the obtained products.
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Affiliation(s)
- Guangming Wei
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Jiajun Zhang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Haoyuan Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China. .,Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straβe 29a, 18059 Rostock, Germany.
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6
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Liu D, Lu X, Chai Z, Yang H, Sun Y, Yu F. Progress in Construction of 2 H-Pyrrol-2-ones Skeleton. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202207006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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7
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Raji Reddy C, Kolgave DH, Ajaykumar U, Ramesh R. Copper(II)-catalyzed oxidative ipso-annulation of N-arylpropiolamides and biaryl ynones with 1,3-diketones: construction of diketoalkyl spiro-trienones. Org Biomol Chem 2022; 20:6879-6889. [PMID: 35972321 DOI: 10.1039/d2ob01282k] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented copper-catalyzed ipso-annulation reaction of N-(p-methoxyaryl)propiolamides with 1,3-diketones has been developed, which enables the assembly of diketoalkylated spiro[4.5]trienones involving oxidative dearomatization in the presence of ammonium persulfate [(NH4)2S2O8] as the oxidant. This protocol was extended to biaryl ynones, efficiently affording the diketoalkylated spiro[5.5]trienones in good yields. The significance of the diketoalkyl functionality has been illustrated by further transformation into 3-pyrazoyl spiro-trienone, a structurally unique motif.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Dattahari H Kolgave
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Uprety Ajaykumar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Remya Ramesh
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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8
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Tao LM, Yu LM, Xu JL, Kuang J, Wang LB, Li C. Iron‐Catalyzed Oxidative Hydroxyamination of Alkenes of Unsaturated Keto Oximes with TBHP as the Hydroxy Source. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Li-Mei Yu
- XiangNan University Hunan Provincials Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications School of Chemistry and Environmental Science 423000 Chenzhou CHINA
| | - Jia-Li Xu
- XiangNan University Hunan Provincials Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications School of Chemistry and Environmental Science 423000 Chenzhou CHINA
| | - Jie Kuang
- XiangNan University Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications School of Chemistry and Environmental Science 423000 Chenzhou CHINA
| | - Lu-Bao Wang
- XiangNan University Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications School of Chemistry and Environmental Science 423000 Chenzhou CHINA
| | - Chuanhua Li
- XiangNan University Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications School of Chemistry and Environmental Science 423000 Chenzhou CHINA
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9
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Yang M, Hua J, Wang H, Ma T, Liu C, He W, Zhu N, Hu Y, Fang Z, Guo K. Photomediated Spirocyclization of N-Benzyl Propiolamide with N-Iodosuccinimide for Access to Azaspiro[4.5]deca-6,9-diene-3,8-dione. J Org Chem 2022; 87:8445-8457. [PMID: 35678323 DOI: 10.1021/acs.joc.2c00579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A metal- and oxidant-free route for affording azaspiro[4.5]deca-6,9-diene-3,8-dione via photomediated iodinated spirocyclization of N-(4-methoxybenzyl) propiolamide has been developed. The reaction underwent a radical addition/ipso-cyclization/dearomatization process at room temperature and successfully constructed C-C and C-I bonds. This green and convenient approach could be generally expanded to produce a range of iodinated spirocyclization products in moderate to good yields.
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Affiliation(s)
- Man Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Hao Wang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Tao Ma
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yujing Hu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
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10
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Chen F, Zheng Y, Yang H, Yang Q, Wu L, Zhou N. Iron‐Catalyzed Silylation and Spirocyclization of Biaryl‐Ynones: A Radical Cascade Process toward Silylated Spiro[5.5]trienones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Chen
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs Anyang Key Laboratory of New Functional Complex Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yang Zheng
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs Anyang Key Laboratory of New Functional Complex Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Hao Yang
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs Anyang Key Laboratory of New Functional Complex Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Qing‐Yun Yang
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs Anyang Key Laboratory of New Functional Complex Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Lu‐Yan Wu
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs Anyang Key Laboratory of New Functional Complex Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Nengneng Zhou
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education Anhui Key Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241000 People's Republic of China
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11
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Liang Y, Wang S, Jia H, Chen B, Zhu F, Huo Z. Trifluoromethylthiolative spirocyclization of biaryl ynones without leaving groups on the para-position of dearomatized aryl rings. NEW J CHEM 2022. [DOI: 10.1039/d2nj01056a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A direct and efficient strategy for the oxidative spirocyclization of biaryl ynones has been developed, where nonsubstituted groups were on the para-position of the dearomatized aryl rings.
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Affiliation(s)
- You Liang
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, P. R. China
- College of Plant Science, Tarim University, Alaer 843300, P. R. China
| | - Sijin Wang
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Huijuan Jia
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, P. R. China
| | - Beibei Chen
- College of Plant Science, Tarim University, Alaer 843300, P. R. China
| | - Feng Zhu
- Plant Protection and Plant Quarantine Station of Jiangsu Province, Nanjing 210014, P. R. China
| | - Zhongyang Huo
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, P. R. China
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12
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Shen LY, Sun Y, Wang YQ, Li B, Yang WC, Dai P. K2S2O8-promoted radical trifluoromethylthiolation/spirocyclization for the synthesis of SCF3‑featured spiro[5,5]trienones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132649] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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13
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Yuan JW, Chen Q, Wu WT, Zhao JJ, Yang LR, Xiao YM, Mao P, Qu LB. Selectfluor-mediated construction of 3-arylselenenyl and 3,4-bisarylselenenyl spiro[4.5]trienones via cascade annulation of N-phenylpropiolamides with diselenides. NEW J CHEM 2022. [DOI: 10.1039/d2nj00869f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A cascade annulation of N-phenylpropiolamides with diselenides leading to the construction of 3-arylselenenyl spiro[4.5]trienones was realized under mild conditions with Selectfluor as the sole oxidant.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qian Chen
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Wen-Tao Wu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Jian-Jun Zhao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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14
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Yang X, Gao H, Yan J, Shi L. Recent Progress in Radical-Mediated Si—H Functionalization of Silanes: An Effective Strategy for the Synthesis of Organosilanes Containing C—Si Bond. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Yuan JW, Shen L, Ma M, Feng S, Yang W, Yang L, Xiao YM, Zhang S, Qu L. Visible-Light-Induced Tandem Difluoroalkylated Spirocyclization of N-Arylpropiolamides: Access to C3-Difluoroacetylated Spiro[4,5]trienones. NEW J CHEM 2022. [DOI: 10.1039/d2nj00131d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-catalyzed difluoroacetylated spirocyclization of N-arylpropiolamides with ethyl bromodifluoroacetate as a CF2CO2Et radical precursor is described. This approach allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in...
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16
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Yuan JW, Mou CX, Zhang Y, Hu WY, Yang LR, Xiao YM, Mao P, Zhang SR, Qu LB. Transition-metal catalyzed oxidative spirocyclization of N-aryl alkynamides with methylarenes under microwave irradiation. Org Biomol Chem 2021; 19:10348-10358. [PMID: 34812461 DOI: 10.1039/d1ob01970h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A practical synthetic route to construct a variety of 3-benzyl spiro[4,5]trienones was developed via transition-metal Cu/Ag-catalyzed oxidative ipso-annulation of activated alkynes with unactivated toluenes using TBPB as an oxidant under microwave irradiation. This method allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in a single reaction through a sequence of C-H oxidative coupling, ipso-carbocyclization and dearomatization. The advantages of this protocol are its operational simplicity and broad substrate scope, and the ability to afford the desired products in moderate to good yields.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Chen-Xu Mou
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yang Zhang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Wen-Yu Hu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Shou-Ren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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17
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Chalcogenative spirocyclization of N-aryl propiolamides with diselenides/disulfides promoted by Selectfluor. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
A practical and efficient synthetic route to construct a variety of 3-arylselenenyl/3-arylthio spiro[4.5]trienones was developed using Selectfluor reagent as a mild oxidant. This reaction proceeds via a sequence of electrophilic cation addition, spirocyclization and dearomatization, then offers an approach to introduce Se/S-centered cation into the C–C triple bonds. The utility of this protocol were justified by the excellent compatibility of a wide range of functional groups, good yields and scalability under mild reaction conditions.
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18
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Xia D, Duan XF. Iron-Catalyzed Dearomatization of Biaryl Ynones with Aldehydes via Double C-H Functionalization in Eco-Benign Solvents: Highly Atom-Economical Synthesis of Acylated Spiro[5.5]trienones. J Org Chem 2021; 86:15263-15275. [PMID: 34643395 DOI: 10.1021/acs.joc.1c01870] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The multiple C-H bonds of biaryl ynones render the 6-exo-trig regioselective C-H activation dearomatization to spiro[5.5]trienones challenging since the competing reactions of C-H bonds on Ar1 or the ortho-C-H bonds on Ar3 may result in 5-exo-trig cyclization to indenones or 6-exo-trig ortho-dearomatization, respectively. We here report an unprecendented dearomatization of biaryl ynones with aldehydes via double C-H functionalization where a regiospecific remote unactivated para-C-H functionalization of biaryl ynones efficiently furnishes acylated spiro[5.5]trienones. This cascade cyclization features a green catalyst and solvent and high atom- and step-economy.
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Affiliation(s)
- Dong Xia
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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19
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Deng D, Huang D, Sun X, Gao B. Recent Advances in the Tandem Difunctionalization of Alkynes: Mechanism-Based Classification. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1486-2158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractRecent advances on the tandem difunctionalization of alkynes in the last decade (2010–2020) are summarized into five categories based on the type of mechanism: (1) radical addition and coupling for the synthesis of polysubstituted ketones and alkenes, (2) electrophilic addition of alkynes, (3) reactions mediated by haloalkynes or copper acetylides, (4) the preparation of cyclic compounds via radical processes, palladium-catalyzed reactions or conjugate additions, and (5) cyclic compounds as intermediates in ring openings. Herein, radical, electrophilic and nucleophilic reactions are discussed in detail. We hope this review will help to promote future research in this area. 1 Introduction2 Radical Addition and Coupling3 Electrophilic Addition4 Reactions Mediated by Haloalkynes or Copper Acetylides5 Cyclization6 Cyclization and Ring Opening7 Conclusions
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Affiliation(s)
- Danfeng Deng
- Department of Chemistry, Lishui University, No. 1
| | - Dayun Huang
- Department of Chemistry, Lishui University, No. 1
| | - Xiangyu Sun
- Torch High Technology Industry Development Center, Ministry of Science & Technology
| | - Biwen Gao
- Department of Chemistry, Lishui University, No. 1
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20
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Peng CC, Wu LJ, Pi SF. Palladium-catalyzed difunctionalization/dearomatization of N-benzylacrylamides with α-carbonyl alkyl bromides: facile access to azaspirocyclohexadienones. Org Biomol Chem 2021; 19:7602-7606. [PMID: 34524329 DOI: 10.1039/d1ob01405f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient palladium-catalyzed difunctionalization/dearomatization of N-benzylacrylamides with α-carbonyl alkyl bromides as alkyl radical precursors has been described. Various α-carbonyl alkyl bromides, including α-bromoalkyl esters and ketones, reacted smoothly to provide important azaspirocyclohexadienones in moderate to excellent yields. In addition, mechanistic studies suggested that the reaction proceeded via a radical pathway.
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Affiliation(s)
- Chuan-Chong Peng
- Institute of Applied Chemistry, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Li-Jun Wu
- Institute of Applied Chemistry, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Shao-Feng Pi
- School of Materials and Chemical Engineering, Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, Hunan Institute of Engineering, Xiangtan, 411104, China.
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21
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Hoxha S, Kalaitzakis D, Bosveli A, Montagnon T, Vassilikogiannakis G. One-Pot Transformation of Furans into 1-Azaspirocyclic Alkaloid Frameworks Induced by Visible Light. Org Lett 2021; 23:5354-5358. [PMID: 34180682 DOI: 10.1021/acs.orglett.1c01661] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High-value 1-azaspirocyclic scaffolds have been made from simple and readily accessible furan precursors in a single operation. The protocol is a one-pot sequence using highly sustainable conditions (oxygen, visible light, and a favored green solvent) that leads to a dramatic increase in molecular complexity. The initial substrates can include functionalities that are suitable for further elaboration; in this way, the pruned polycyclic skeletons of the stemonamine, cylindricine, and lepadiformine natural products were rapidly accessed.
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Affiliation(s)
- Stela Hoxha
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Dimitris Kalaitzakis
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Artemis Bosveli
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Tamsyn Montagnon
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
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22
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Wang YC, Huang K, Lai X, Shi Z, Liu JB, Qiu G. Radical bromination-induced ipso cyclization- ortho cyclization sequence of N-hydroxylethyl- N-arylpropiolamides. Org Biomol Chem 2021; 19:1940-1944. [PMID: 33569553 DOI: 10.1039/d1ob00010a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A facile procedure is reported for the synthesis of various 2-bromo-1-phenyl-5,6-dihydro-3H,7aH-benzo[b]pyrrolo[2,1-c][1,4]oxazin-3-ones via a radical bromination-induced ipso cyclization-ortho cyclization sequence of N-arylpropiolamides in the presence of TBAB and oxone. The radical cyclization sequence involves a radical bromo α-addition into the alkyne, ipso-cyclization, and ortho-trapping of the spirocyclic intermediate.
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Affiliation(s)
- Yu-Chao Wang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Keke Huang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Xiaojing Lai
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China. and College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Zhongning Shi
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Jin-Biao Liu
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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23
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Zeng FL, Chen XL, Sun K, Zhu HL, Yuan XY, Liu Y, Qu LB, Zhao YF, Yu B. Visible-light-induced metal-free cascade cyclization of N-arylpropiolamides to 3-phosphorylated, trifluoromethylated and thiocyanated azaspiro[4.5]trienones. Org Chem Front 2021. [DOI: 10.1039/d0qo01410a] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photocatalytic strategies for the preparation of 3-functionalized azaspiro[4.5]trienones via a radical-initiated cascade annulation reaction was developed.
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Affiliation(s)
- Fan-Lin Zeng
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Lan Chen
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Kai Sun
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Hu-Lin Zhu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiao-Ya Yuan
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ling-Bo Qu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yu-Fen Zhao
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Bing Yu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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24
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Nozawa-Kumada K, Ojima T, Inagi M, Shigeno M, Kondo Y. Di-tert-butyl Peroxide (DTBP)-Mediated Oxysilylation of Unsaturated Carboxylic Acids for the Synthesis of Silyl Lactones. Org Lett 2020; 22:9591-9596. [DOI: 10.1021/acs.orglett.0c03640] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Takuto Ojima
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Moeto Inagi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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25
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Tang L, Yang F, Cheng H, Tan C, Jin C, Chen H, Huang Y, Zhang S, Song W, Tan J. Copper-Catalyzed Oxidative Fragmentation of Alkynes with NFSI Provides Aryl Ketones. Org Lett 2020; 22:8618-8623. [DOI: 10.1021/acs.orglett.0c03201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hao Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Chen Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Chaochao Jin
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Hanfei Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yifan Huang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Shuaifei Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Weihan Song
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Jiajing Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
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26
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Yang W, Zhang M, Feng J. Recent Advances in the Construction of Spiro Compounds
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Radical Dearomatization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000636] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wen‐Chao Yang
- School of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 P. R. China
- Guangling College Yangzhou University Yangzhou 225009 P. R. China
| | - Ming‐Ming Zhang
- School of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 P. R. China
| | - Jian‐Guo Feng
- School of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 P. R. China
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27
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Reddy CR, Kolgave DH, Subbarao M, Aila M, Prajapti SK. Ag-Catalyzed Oxidative ipso-Cyclization via Decarboxylative Acylation/Alkylation: Access to 3-Acyl/Alkyl-spiro[4.5]trienones. Org Lett 2020; 22:5342-5346. [DOI: 10.1021/acs.orglett.0c01588] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Dattahari H. Kolgave
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Muppidi Subbarao
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Mounika Aila
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Santosh Kumar Prajapti
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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28
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Neto JSS, Zeni G. Transition Metal‐Catalyzed and Metal‐Free Cyclization Reactions of Alkynes with Nitrogen‐Containing Substrates: Synthesis of Pyrrole Derivatives. ChemCatChem 2020. [DOI: 10.1002/cctc.201902325] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de QuímicaUniversidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNEUniversidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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29
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Liu T, Li Y, Jiang L, Wang J, Jin K, Zhang R, Duan C. Photo-mediated synthesis of halogenated spiro[4,5]trienones of N-aryl alkynamides with PhI(OCOCF 3) 2 and KBr/KCl. Org Biomol Chem 2020; 18:1933-1939. [PMID: 32101242 DOI: 10.1039/d0ob00057d] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A novel and convenient photo-mediated halogenated spirocyclization of N-(p-methoxyaryl)propiolamides has been developed. The photolysis of phenyliodine bis(trifluoroacetate) (PIFA) as an iodination reagent led to iodinated ipso-cyclization under the irradiation of a xenon lamp, while brominated ipso-cyclization or chlorinated ipso-cyclization was achieved by irradiating a mixture of PIFA and KBr/KCl under a blue LED. The present protocol simply utilizes light as the safe and clean energy source and doesn't require any external photocatalyst providing various 3-halospiro[4,5]trienones in good to excellent yields (up to 93%).
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Affiliation(s)
- Tong Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Yaming Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Linlin Jiang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Jiaao Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Kun Jin
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Rong Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
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30
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Chang XH, Wang ZL, Zhao M, Yang C, Li JJ, Ma WW, Xu YH. Synthesis of Functionalized Vinylsilanes via Metal-Free Dehydrogenative Silylation of Enamides. Org Lett 2020; 22:1326-1330. [DOI: 10.1021/acs.orglett.9b04645] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xi-Hao Chang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zi-Lu Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Meng Zhao
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chao Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jie-Jun Li
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Wei-Wei Ma
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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31
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Peng X, Liu RX, Xiao XY, Yang L. Fe-catalyzed Decarbonylative Alkylative Spirocyclization of N-Arylcinnamamides: Access to Alkylated 1-Azaspirocyclohexadienones. Molecules 2020; 25:molecules25030432. [PMID: 31972970 PMCID: PMC7037460 DOI: 10.3390/molecules25030432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 12/15/2022] Open
Abstract
For the convenient introduction of simple linear/branched alkyl groups into biologically important azaspirocyclohexadienones, a practical Fe-catalyzed decarbonylative cascade spiro-cyclization of N-aryl cinnamamides with aliphatic aldehydes to provide alkylated 1-azaspiro-cyclohexadienones was developed. Aliphatic aldehydes were oxidative decarbonylated into primary, secondary and tertiary alkyl radicals conveniently and allows for the subsequent cascade construction of dual C(sp3)-C(sp3) and C=O bonds via radical addition, spirocyclization and oxidation sequence.
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Affiliation(s)
| | | | | | - Luo Yang
- Correspondence: ; Tel.: +86-0731-59282229; Fax: +86-0731-58292251
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32
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Manna S, Someswara Ashwathappa PK, Prabhu KR. Visible light-mediated ipso-annulation of activated alkynes: access to 3-alkylated spiro[4,5]-trienones, thiaspiro[4,5]-trienones and azaspiro[4,5]-trienones. Chem Commun (Camb) 2020; 56:13165-13168. [DOI: 10.1039/d0cc01217c] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel method for chemoselective difunctionalization of activated alkynes for synthesizing 3-alkylated spiro[4,5]-trienones, thiaspiro[4,5]-trienones and spirolactams has been uncovered using photoredox catalysis under visible light conditions.
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Affiliation(s)
- Sabyasachi Manna
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
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33
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Nair AM, Shinde AH, Kumar S, Volla CMR. Metal-free spirocyclization of N-arylpropiolamides with glyoxylic acids: access to complex azaspiro-fused tricycles. Chem Commun (Camb) 2020; 56:12367-12370. [DOI: 10.1039/d0cc04800c] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient K2S2O8-mediated oxidative cascade spirocyclization of N-arylpropiolamides with aryl glyoxylic acids was demonstrated for constructing azaspiro[4,5]-trienones and complex azaspiro-fused architectures.
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Affiliation(s)
- Akshay M. Nair
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
| | - Anand H. Shinde
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
| | - Shreemoyee Kumar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
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34
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Wang YC, Liu JB, Zhou H, Xie W, Rojsitthisak P, Qiu G. Ortho-Hydroxylative ipso-Cyclization of N-arylpropiolamide. J Org Chem 2019; 85:1906-1914. [DOI: 10.1021/acs.joc.9b02590] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu-Chao Wang
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Hongwei Zhou
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China
| | - Wenlin Xie
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China
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35
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Visible-light-mediated selective thiocyanation/ipso-cyclization/oxidation cascade for the synthesis of thiocyanato-containing azaspirotrienediones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130763] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Nair AM, Halder I, Khan S, Volla CMR. Metal Free Sulfonylative Spirocyclization of Alkenyl and Alkynyl Amides
via
Insertion of Sulfur Dioxide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901321] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Akshay M. Nair
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Indranil Halder
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Salman Khan
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
| | - Chandra M. R. Volla
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai – 400076 India
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37
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Affiliation(s)
- Dirk Leifert
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 40 48149 Münster Deutschland
| | - Armido Studer
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstraße 40 48149 Münster Deutschland
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38
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Leifert D, Studer A. The Persistent Radical Effect in Organic Synthesis. Angew Chem Int Ed Engl 2019; 59:74-108. [PMID: 31116479 DOI: 10.1002/anie.201903726] [Citation(s) in RCA: 372] [Impact Index Per Article: 74.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Indexed: 12/14/2022]
Abstract
Radical-radical couplings are mostly nearly diffusion-controlled processes. Therefore, the selective cross-coupling of two different radicals is challenging and not a synthetically valuable transformation. However, if the radicals have different lifetimes and if they are generated at equal rates, cross-coupling will become the dominant process. This high cross-selectivity is based on a kinetic phenomenon called the persistent radical effect (PRE). In this Review, an explanation of the PRE supported by simulations of simple model systems is provided. Radical stabilities are discussed within the context of their lifetimes, and various examples of PRE-mediated radical-radical couplings in synthesis are summarized. It is shown that the PRE is not restricted to the coupling of a persistent with a transient radical. If one coupling partner is longer-lived than the other transient radical, the PRE operates and high cross-selectivity is achieved. This important point expands the scope of PRE-mediated radical chemistry. The Review is divided into two parts, namely 1) the coupling of persistent or longer-lived organic radicals and 2) "radical-metal crossover reactions"; here, metal-centered radical species and more generally longer-lived transition-metal complexes that are able to react with radicals are discussed-a field that has flourished recently.
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Affiliation(s)
- Dirk Leifert
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Armido Studer
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China.,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
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39
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Cu/chiral phosphoric acid-catalyzed radical-initiated asymmetric aminosilylation of alkene with hydrosilane. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9528-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Liu B, Cheng J, Li Y, Li JH. Oxidative tandem annulation of 1-(2-ethynylaryl)prop-2-en-1-ones catalyzed by cooperative iodine and TBHP. Chem Commun (Camb) 2019; 55:667-670. [DOI: 10.1039/c8cc09271k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal-free I2-catalyzed tandem annulation of 1,6-enynes to access 1H-cyclopropa-[b]naphthalene-2,7-diones using TBHP is presented.
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Affiliation(s)
- Bang Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
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41
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Sahoo H, Grandhi GS, Ramakrishna I, Baidya M. Metal-free switchable ortho/ipso-cyclization of N-aryl alkynamides: divergent synthesis of 3-selenyl quinolin-2-ones and azaspiro[4,5]trienones. Org Biomol Chem 2019; 17:10163-10166. [DOI: 10.1039/c9ob02177a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A selenium radical triggered switchable ortho/ipso-cyclization cascade of N-aryl alkynamides has been devised under metal-free conditions to access 3-selenyl quinolin-2-ones and 3-selenospiro[4,5]trienones in high yields (up to 98%).
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Affiliation(s)
- Harekrishna Sahoo
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai – 600036
- India
| | - Gowri Sankar Grandhi
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai – 600036
- India
| | - Isai Ramakrishna
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai – 600036
- India
| | - Mahiuddin Baidya
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai – 600036
- India
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42
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Wang C, Roisnel T, Dixneuf PH, Soulé J. Access to 3‐(2‐Oxoalkyl)‐azaspiro[4.5]trienones
via
Acid‐Triggered Oxidative Cascade Reaction through Alkenyl Peroxide Radical Intermediate. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801203] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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43
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Chen F, Lai SQ, Zhu FF, Meng Q, Jiang Y, Yu W, Han B. Cu-Catalyzed Radical Cascade Annulations of Alkyne-Tethered N-Alkoxyamides with Air: Facile Access to Isoxazolidine/1,2-Oxazinane-Fused Isoquinolin-1(2H)-ones. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02445] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Fei Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Sheng-Qiang Lai
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Fei-Fei Zhu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Qiang Meng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Yu Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People’s Republic of China
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44
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Yang C, Wang J, Li J, Ma W, An K, He W, Jiang C. Visible-Light Induced Radical Silylation for the Synthesis of Dibenzosiloles via Dehydrogenative Cyclization. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800417] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Yang
- School of Chemical Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 People's Republic of China
| | - Jing Wang
- School of Medicine and Tsinghua-Peking Joint Centers for Life Science; Tsinghua University; Beijing 100084 People's Republic of China
| | - Jianhua Li
- School of Chemical Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 People's Republic of China
| | - Wenchao Ma
- School of Chemical Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 People's Republic of China
| | - Kun An
- School of Medicine and Tsinghua-Peking Joint Centers for Life Science; Tsinghua University; Beijing 100084 People's Republic of China
| | - Wei He
- School of Medicine and Tsinghua-Peking Joint Centers for Life Science; Tsinghua University; Beijing 100084 People's Republic of China
| | - Chao Jiang
- School of Chemical Engineering; Nanjing University of Science and Technology; Nanjing Jiangsu 210094 People's Republic of China
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45
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Reddy CR, Prajapti SK, Ranjan R. Cu(I)-Catalyzed Aminative Aza-Annulation of Enynyl Azide using N-Fluorobenzenesulfonimide: Synthesis of 5-Aminonicotinates. Org Lett 2018; 20:3128-3131. [DOI: 10.1021/acs.orglett.8b01228] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Santosh Kumar Prajapti
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Ravi Ranjan
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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46
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Dai W, Wu X, Li C, Zhang R, Wang J, Liu H. Regio-selective and stereo-selective hydrosilylation of internal alkynes catalyzed by ruthenium complexes. RSC Adv 2018; 8:28261-28265. [PMID: 35542735 PMCID: PMC9084253 DOI: 10.1039/c8ra04083d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/20/2018] [Indexed: 11/21/2022] Open
Abstract
In this study, ruthenium(ii)-catalyzed direct hydrosilylation of internal alkynes with high regio-selectivity and stereo-selectivity is reported. This title transformation led to various vinylsilanes in good to excellent yields. This approach features mild reaction conditions, low catalyst loading, air-stability, and good functional group tolerance. Furthermore, gram-scale preparation and some transformations of vinylsilanes were carried out, which further underscored its synthetic utility and applicability. In this study, ruthenium(ii)-catalyzed direct hydrosilylation of internal alkynes with high regio-selectivity and stereo-selectivity is reported.![]()
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Affiliation(s)
- Wenhao Dai
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Receptor Research
| | - Xiaowei Wu
- Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Chunpu Li
- Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Rui Zhang
- Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Jiang Wang
- Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Hong Liu
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Receptor Research
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47
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Yang Y, Song RJ, Li Y, Ouyang XH, Li JH, He DL. Oxidative radical divergent Si-incorporation: facile access to Si-containing heterocycles. Chem Commun (Camb) 2018; 54:1441-1444. [DOI: 10.1039/c7cc08964c] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Oxidative radical cleavage of Si–H/silyl C(sp3)–H bonds, dual Si–H bonds and Si–H/Si–Si bonds toward Si-heterocycles is presented.
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Affiliation(s)
- Yuan Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Ren-Jie Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Yang Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Xuan-Hui Ouyang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - De-Liang He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
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48
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Wu LJ, Yang Y, Song RJ, Yu JX, Li JH, He DL. An access to 1,3-azasiline-fused quinolinonesviaoxidative heteroannulation involving silyl C(sp3)–H functionalization. Chem Commun (Camb) 2018; 54:1367-1370. [DOI: 10.1039/c7cc08996a] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A Mn-promoted intermolecular oxidative heteroannulation ofN-(2-cyanoaryl)-acrylamides with tertiary silanes toward 1,3-azasiline-fused quinolinones is presented.
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Affiliation(s)
- Li-Jun Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Yuan Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Ren-Jie Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Jiang-Xi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University
- Nanchang 330063
| | - De-Liang He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
- Changsha 410082
- China
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49
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Yan Z, Xie J, Zhu C. Copper-Catalyzed Radical Silylarylation of Ynones with Silanes: En Route to Silyl-Functionalized Indenones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700926] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhongfei Yan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 People's Republic of China
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 People's Republic of China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 People's Republic of China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Shanghai People's Republic of China
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50
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Xu Z, Chai L, Liu ZQ. Free-Radical-Promoted Site-Selective C–H Silylation of Arenes by Using Hydrosilanes. Org Lett 2017; 19:5573-5576. [DOI: 10.1021/acs.orglett.7b02717] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengbao Xu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Li Chai
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhong-Quan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory Cultivation Base for TCM Quality and Efficacy, College
of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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