1
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Deng KY, Xie ZZ, Yuan CP, Guan JP, Chen K, Xiang HY, Yang H. Photoinduced 1,5-HAT-enabled 1,7-hydrosulfonylation of allylic ethers and amides. Chem Commun (Camb) 2024; 60:11984-11987. [PMID: 39351683 DOI: 10.1039/d4cc03557g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2024]
Abstract
Herein, we report a photoinduced 1,7-hydrosulfonylation of allylic ethers and amides via a sequential Pd-mediated 1,5-HAT process and Pd-catalyzed allylic nucleophilic attack of arylsulfonates. This rationally designed synthetic protocol allows for facile construction of a series of structurally novel allylic sulfonated scaffolds, and features mild conditions, cheap and readily available raw materials and functional group compatibility.
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Affiliation(s)
- Ke-Yi Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Chu-Ping Yuan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Jian-Ping Guan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
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2
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Dong L, Wang X, Gou Y, Yu S, Yu Z. Photoredox/HAT-Catalyzed Intramolecular Hydrocyclization of Alkenes toward 2,3-Fused Quinazolinones and Dihydroquinazolinones. Org Lett 2024. [PMID: 39356628 DOI: 10.1021/acs.orglett.4c02974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2024]
Abstract
New photochemical approaches to 2,3-fused quinazolinones and dihydroquinazolinones are disclosed. The intramolecular hydrocyclization proceeds in moderate to excellent yields across diverse alkenes with high regioselectivity and diastereocontrol. Mechanistic studies indicated that the radical cascade processes involve thiophenol acting as single-electron transfer and hydrogen atom transfer reagents. The success of the gram-scale synthesis proves the strategy can be used for practical applications.
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Affiliation(s)
- Li Dong
- College of Life Sciences, Hebei Agricultural University, Baoding 071000, China
| | - Xiaoqing Wang
- College of Sciences, Hebei Agricultural University, Baoding 071000, China
| | - Yanhui Gou
- College of Life Sciences, Hebei Agricultural University, Baoding 071000, China
| | - Shuo Yu
- College of Life Sciences, Hebei Agricultural University, Baoding 071000, China
| | - Zhengsen Yu
- College of Life Sciences, Hebei Agricultural University, Baoding 071000, China
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3
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Jiang B, Zhang C, Fan TG, Ran YS, Shen YT, Qu Y, Li YM. Cascade Cyclization of N-Cyanamide Alkenes for the Divergent Synthesis of Azido-, Nitro-, and Alkenyl-Containing Pyrroloquinazolinones. Org Lett 2024; 26:8028-8033. [PMID: 39283295 DOI: 10.1021/acs.orglett.4c02803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
Radical cascade cyclizations of N-cyanamide alkenes have been developed for the divergent synthesis of pyrroloquinazolinones bearing azido, alkenyl, and nitro groups by controlling the reaction conditions. The reaction temperature and the loading of the base play important roles in the different reaction pathways. These reactions are characterized by wide functional group compatibility and mild conditions.
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Affiliation(s)
- Bo Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Cui Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Tai-Gang Fan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yu-Song Ran
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yun-Tao Shen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yuan Qu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
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4
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Gao S, Cai M, Xu G, Jin Q, Wang X, Xu L, Wang L, Dai L. (NH 4) 2S 2O 8 promoted tandem radical cyclization of quinazolin-4(3 H)-ones with oxamic acids for the construction of fused quinazolinones under metal-free conditions. Org Biomol Chem 2024; 22:2241-2251. [PMID: 38372133 DOI: 10.1039/d3ob02081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
A novel cascade radical addition/cyclization reaction of non-activated olefins and oxamic acids has been proposed. Under transition metal-free conditions, 36 quinazolinone derivatives containing an amide moiety were successfully synthesized, with the highest yield being 81%. This method involves the preparation of aminoacyl fused quinazolinone derivatives under mild conditions, offering advantages such as a high yield, a broad substrate compatibility, and a high atom economy.
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Affiliation(s)
- Shenyuan Gao
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Menglu Cai
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, PR China.
| | - Gang Xu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Qiaolin Jin
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Xiaozhong Wang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Linze Xu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Lixiang Wang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
| | - Liyan Dai
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
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5
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Wu X, Liu L, Xiang C, Yu JT, Pan C. Photocatalytic cyclization of 3-(2-isocyanophenyl)quinazolin-4(3 H)-ones for the construction of quinoxalino[2,1- b]quinazolinones. Chem Commun (Camb) 2024; 60:2556-2559. [PMID: 38345179 DOI: 10.1039/d4cc00187g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
A new kind of building unit, 3-(2-isocyanophenyl)quinazolin-4(3H)-ones, was designed and synthesized for the construction of novel quinoxalino[2,1-b]quinazolinones. The radical cyclization of 3-(2-isocyanophenyl)quinazolin-4(3H)-ones with ethers afforded ether-substituted tetracyclic quinoxalino[2,1-b]quinazolinones under photocatalytic and metal-free conditions. In the process, the isocyano accepts a carbon radical to give an imidoyl radical, which adds to the electron-deficient CN bond in quinazolin-4(3H)-one.
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Affiliation(s)
- Xian Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Lingli Liu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Chengli Xiang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
- School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
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6
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Vaskevych A, Dekhtyar M, Vovk M. Cyclizations of Alkenyl(Alkynyl)-Functionalized Quinazolinones and their Heteroanalogues: A Powerful Strategy for the Construction of Polyheterocyclic Structures. CHEM REC 2024; 24:e202300255. [PMID: 37830463 DOI: 10.1002/tcr.202300255] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/28/2023] [Indexed: 10/14/2023]
Abstract
Quinazolin-4-one, its heteroanalogues, and derivatives represent an outstandingly important class of compounds in modern organic, medicinal, and pharmaceutical chemistry, as these molecular structures are noted for their wide synthetic and pharmacological potential. In the last years, ever-increasing research attention has been paid to quinazolinone derivatives bearing alkenyl and alkynyl substituents on the pyrimidinone nucleus. The original structural combination of synthetically powerful endocyclic amidine (or amidine-related) and exocyclic unsaturated moieties provides a driving force for cyclizations, which offer an efficient toolkit to construct a variety of fused pyrimidine systems with saturated N- and N,S-heterocycles. In this connection, the present review article is mainly aimed at systematic coverage of the progress in using alkenyl(alkynyl)quinazolinones and their heteroanalogues as convenient bifunctional substrates for regioselective annulation of small- and medium-sized heterocyclic nuclei. Much attention is paid to elucidating the structural and electronic effects of reagents on the regio- and stereoselectivity of the cyclizations as well as to clarifying the relevant reaction mechanisms.
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Affiliation(s)
- Alla Vaskevych
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv 02660, Ukraine
| | - Maryna Dekhtyar
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv, 02660, Ukraine
| | - Mykhailo Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv, 02660, Ukraine
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7
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Yan Q, Chen S, Fan J, Li Z. Recent advances in radical thiocyanation cyclization or spirocyclization reactions. Org Biomol Chem 2023; 21:9112-9122. [PMID: 37986647 DOI: 10.1039/d3ob01659e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Organic thiocyanates are valuable biological moities and drug-building blocks. They can also transform effectively into thioethers, thiols, alkynyl thioethers, and thiocarbamates in synthetic chemistry. With respect to the merits of thiocyanates, many chemists and our research team have developed diverse strategies to access SCN-revised heterocycles/spirocycles via an effective radical cyclization process. Hence, this review article first describes the importance/application of thiocyanates. Subsequently, it summarizes the reaction conditions, substrate scopes, and plausible mechanism, respectively, of the excellent work stated above.
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Affiliation(s)
- Qinqin Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei, 071002, P. R. China.
| | - Shiliu Chen
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei, 071002, P. R. China.
| | - Jie Fan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei, 071002, P. R. China.
| | - Zejiang Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei, 071002, P. R. China.
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8
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Hu X, Tao M, Gong K, Feng Q, Hu X, Li Y, Sun S, Liang D. Electrochemical or Photoelectrochemical Alkenylpolyfluoroalkylation of 3-Aza-1,5-dienes: Regioselective Entry to Polyfluoroalkylated 4-Pyrrolin-2-ones. J Org Chem 2023; 88:12935-12948. [PMID: 37673796 DOI: 10.1021/acs.joc.3c00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
An electrochemical or photoelectrochemical regioselective polyfluoroalkylation/cyclization cascade of 3-aza-1,5-dienes with sodium fluoroalkanesulfinates is presented. This protocol proceeds with a broad substrate scope and good functional group tolerance under mild, oxidant-free, transition-metal-free, and electrolyte-free conditions to provide 3-polyfluoroalkylated 4-pyrrolin-2-ones in one step from readily available N-vinylacrylamides, and it is readily scalable to the Gram scale.
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Affiliation(s)
- Xi Hu
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Minglin Tao
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Kaixing Gong
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Qin Feng
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Xiao Hu
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Yanni Li
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
| | - Shaoguang Sun
- Medical College, Panzhihua University, Panzhihua 617000, China
| | - Deqiang Liang
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China
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9
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He Y, Yang Z, Luo D, Luo X, Chen X, Yang W. An Oxidant-Free and Mild Strategy for Quinazolin-4(3 H)-One Synthesis via CuAAC/Ring Cleavage Reaction. Molecules 2023; 28:5734. [PMID: 37570705 PMCID: PMC10420183 DOI: 10.3390/molecules28155734] [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: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
An oxidant-free and highly efficient synthesis of phenolic quinazolin-4(3H)-ones was achieved by simply stirring a mixture of 2-aminobenzamides, sulfonyl azides, and terminal alkynes. The intermediate N-sulfonylketenimine underwent two nucleophilic additions and the sulfonyl group eliminated through the power of aromatization. The natural product 2-(4-hydroxybenzyl)quinazolin-4(3H)-one can be synthesized on a large scale under mild conditions with this method.
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Affiliation(s)
- Yueling He
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhongtao Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Danyang Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Xiai Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Hunan Province Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China
| | - Xiaodong Chen
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
| | - Weiguang Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
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10
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Ghouse AM, Akondi SM. Dicarbofunctionalization of unactivated alkenes via organo-photoredox catalysis in water: access to cyanoalkylated fused quinazolinones. Org Biomol Chem 2023. [PMID: 37334961 DOI: 10.1039/d3ob00716b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
A visible light-induced C-C bond cleavage/addition/cyclization cascade of oxime esters and unactivated alkenes has been developed using water as the solvent. This green protocol offers an easy access to medicinally valuable cyanoalkylated quinazolinones. Mild reaction conditions, functional group tolerance and late-stage functionalization of complex molecules are the important features of this transformation.
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Affiliation(s)
- Abuthayir Mohamathu Ghouse
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srirama Murthy Akondi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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11
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Ren YZ, Fang CZ, Zhang BB, He L, Tu YL, Chen XY. Photocatalytic Charge-Transfer Complex Enables Hydroarylation of Alkenes for Heterocycle Synthesis. Org Lett 2023; 25:3585-3589. [PMID: 37154474 DOI: 10.1021/acs.orglett.3c01329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Here, we report a photocatalytic charge-transfer complex (CTC) strategy for one electron reduction of alkenes using thiolate as a catalytic electron donor. This catalytic CTC system could engage hydroarylation of both activated and unactivated alkenes for the synthesis of various heterocycles. The reactions do not require any photocatalysts or acids and are easy to perform. Mechanistic studies revealed the formation of a CTC between catalytic thiolate and alkene.
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Affiliation(s)
- Ying-Zheng Ren
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
| | - Chang-Zhen Fang
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, People's Republic of China
| | - Bei-Bei Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, People's Republic of China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
| | - Yong-Liang Tu
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, People's Republic of China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, People's Republic of China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong 256606, People's Republic of China
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