1
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Li Y, Hou J, Zhang P, Dai P, Gu YC, Xia Q, Zhang W. Electron Donor-Acceptor Complex Driven Photocatalyst-Free Trifluoromethylation of Heterocycles. Chemistry 2024; 30:e202400237. [PMID: 38556465 DOI: 10.1002/chem.202400237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/16/2024] [Accepted: 03/30/2024] [Indexed: 04/02/2024]
Abstract
Heterocyclic trifluoromethylation is efficiently initiated through a photochemical reaction utilizing an electron donor-acceptor (EDA) complex, proceeding smoothly without the use of photocatalysts, transition-metal catalysts, or additional oxidants. This method has been optimized through extensive experimentation, demonstrating its versatility and efficacy across various substrates, including quinoxalinones, coumarins, and indolones. Notably, this approach enables the practical synthesis of trifluoromethylated quinoxalinones on a gram scale. Mechanistic investigations that incorporate radical trapping and ultraviolet/visible spectroscopy, confirmed the formation of the an EDA complex and elucidated the reaction pathways. This study highlights the crucial role of EDA photoactivation in trifluoromethylation, significantly expanding the application scope of EDA complexes in chemical synthesis.
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Affiliation(s)
- Yufei Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jie Hou
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Pei Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Peng Dai
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre, RG42 6EY, Bracknell, United Kingdom (UK
| | - Qing Xia
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Weihua Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
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2
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Zhao YS, Huang SJ, Gu YQ, Liu GK. Visible-light photoredox-catalyzed radical aryldifluoromethylation of N-arylacrylamides with S-(difluoromethyl)sulfonium salt. Org Biomol Chem 2023; 21:4013-4017. [PMID: 37128753 DOI: 10.1039/d3ob00488k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A facile and highly efficient visible-light photoredox-catalyzed protocol for aryldifluoromethylation of acrylamides was developed using S-(difluoromethyl)sulfonium salt as the difluoromethyl source. With this method, pharmaceutically interesting CF2H-containing oxindoles were readily accessed from N-arylacrylamides, and this method featured mild reaction conditions, a broad scope of substrates, good tolerance of functional groups, and good to excellent yields. Control experiments revealed that this protocol proceeded through a difluoromethylation/cyclization cascade process.
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Affiliation(s)
- Ya-Shi Zhao
- School of Pharmaceutical Sciences, Shenzhen University Medical School, Shenzhen University, 1066 Xueyuan Avenue, Nanshan District, Shenzhen 518055, China.
| | - Sheng-Jie Huang
- School of Pharmaceutical Sciences, Shenzhen University Medical School, Shenzhen University, 1066 Xueyuan Avenue, Nanshan District, Shenzhen 518055, China.
| | - Yuan-Qing Gu
- School of Pharmaceutical Sciences, Shenzhen University Medical School, Shenzhen University, 1066 Xueyuan Avenue, Nanshan District, Shenzhen 518055, China.
| | - Guo-Kai Liu
- School of Pharmaceutical Sciences, Shenzhen University Medical School, Shenzhen University, 1066 Xueyuan Avenue, Nanshan District, Shenzhen 518055, China.
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3
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Lv Y, Hou ZW, Wang Y, Li P, Wang L. Electrochemical monofluoroalkylation cyclization of N-arylacrylamides to construct monofluorinated 2-oxindoles. Org Biomol Chem 2023; 21:1014-1020. [PMID: 36602181 DOI: 10.1039/d2ob01883g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An electrochemical monofluoroalkylation cyclization of N-arylacrylamides to synthesize monofluorinated 2-oxindoles has been developed, which employs common dimethyl 2-fluoromalonate as a monofluoroalkyl radical precursor and obviates the use of prefunctionalized monofluoroalkylation reagents and sacrificial oxidants. A variety of monofluorinated nitrogen-containing heterocyclic compounds were efficiently obtained with satisfactory yields from readily available materials.
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Affiliation(s)
- Yanxia Lv
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou 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, Taizhou 318000, P. R. China.
| | - Yi Wang
- The Second Hospital of Anhui Medical University, Heifei, Anhui 230601, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou 318000, P. R. China. .,Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.,The Second Hospital of Anhui Medical University, Heifei, Anhui 230601, P. R. China
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4
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Liu D, Zhao Y, Patureau FW. NaI/PPh 3-catalyzed visible-light-mediated decarboxylative radical cascade cyclization of N-arylacrylamides for the efficient synthesis of quaternary oxindoles. Beilstein J Org Chem 2023; 19:57-65. [PMID: 36741816 PMCID: PMC9874234 DOI: 10.3762/bjoc.19.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/08/2022] [Indexed: 01/18/2023] Open
Abstract
A practical NaI/PPh3-catalyzed decarboxylative radical cascade cyclization of N-arylacrylamides with redox-active esters is described, which is mediated by visible light irradiation. A wide range of substrates bearing different substituents and derived from ubiquitous carboxylic acids, including α-amino acids, were synthesized and examined under this very mild, efficient, and cost effective transition-metal-free synthetic method. These afforded various functionalized oxindoles featuring a C3 quaternary stereogenic center. Mechanistic experiments suggest a radical mechanism.
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Affiliation(s)
- Dan Liu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Yue Zhao
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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5
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Gui QW, Teng F, Yang H, Xun C, Huang WJ, Lu ZQ, Zhu MX, Ouyang WT, He WM. Visible-Light Photosynthesis of CHF 2 /CClF 2 /CBrF 2 -Substituted Ring-fused Quinazolinones in Dimethyl Carbonate. Chem Asian J 2022; 17:e202101139. [PMID: 34837338 DOI: 10.1002/asia.202101139] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/25/2021] [Indexed: 12/13/2022]
Abstract
With eco-friendly and sustainable CO2 -derived dimethyl carbonate as the sole solvent, the visible-light-induced cascade radical reactions have been established as a green and efficient tool for constructing various CHF2 /CClF2 /CBrF2 -substituted ring-fused quinazolinones.
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Affiliation(s)
- Qing-Wen Gui
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Fan Teng
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Hao Yang
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Changping Xun
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Wen-Jie Huang
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Zi-Qin Lu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Meng-Xue Zhu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Wen-Tao Ouyang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, P. R. China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, P. R. China
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6
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Sun Z, Huang H, Wang Q, Huang C, Mao G, Deng GJ. Visible light-mediated radical-cascade addition/cyclization of arylacrylamides with aldehydes to form quaternary oxindoles at room temperature. Org Chem Front 2022. [DOI: 10.1039/d2qo00319h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The visible light-induced oxidative radical cascade coupling of N-arylacrylamides with aldehydes using bromide as the hydrogen atom transfer agent to synthesize functional oxindoles is described.
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Affiliation(s)
- Zhaozhao Sun
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Qiaolin Wang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Chunyan Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
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7
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Visible-light-initiated tandem synthesis of difluoromethylated oxindoles in 2-MeTHF under additive-, metal catalyst-, external photosensitizer-free and mild conditions. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.01.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Li M, He FS, Ji LS, Gao YT, Zhang X, Yu Z, Fang M, Wu J, Gao YQ. Synthesis and biological evaluation of fluorinated 3,4-dihydroquinolin-2(1 H)-ones and 2-oxindoles for anti-hepatic fibrosis. RSC Adv 2021; 11:5923-5927. [PMID: 35423132 PMCID: PMC8694865 DOI: 10.1039/d0ra09430g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/18/2021] [Indexed: 11/21/2022] Open
Abstract
(Z)-4-(Iodomethylene)-3-(2,2,2-trifluoroethyl)-3,4-dihydroquinolin-2(1H)-ones and fluorinated 3,3-disubstituted 2-oxindoles are synthesized and evaluated for anti-hepatic fibrosis. CCK-8 assay indicates that most of the compounds have no obvious cytotoxicity on the human hepatic stellate cells (HSC) cell line. Collagen I and fibrosin expression levels are tested by ELISA, and the results show that several compounds can inhibit the expression of collagen I and fibrosin. Additionally, results from real time-PCR reveal that only one compound can inhibit the expression level of α-SMA, suggesting that this compound can inhibit the activation of the HSC cell line. These studies demonstrate that this compound may be a potential novel drug candidate for anti-hepatic fibrosis (approximately 5-6 lines).
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Affiliation(s)
- Man Li
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Fu-Sheng He
- School of Pharmaceutical and Materials Engineering, Taizhou University 1139 Shifu Avenue Taizhou 31800 China
| | - Long-Shan Ji
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Ya-Ting Gao
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Xin Zhang
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Zhuo Yu
- Department of Hepatology, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Miao Fang
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering, Taizhou University 1139 Shifu Avenue Taizhou 31800 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Scinences 354 Fenglin Road Shanghai 200032 China
- School of Chemistry and Chemical Engineering, Henan Normal University China
| | - Yue-Qiu Gao
- Laboratory of Cellular Immunity, Institute of Clinical Immunology, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
- Department of Hepatology, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine 528 ZhangHeng Road Shanghai 201203 China
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9
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Che F, Zhong J, Yu L, Ma C, Yu C, Wang M, Hou Z, Zhang Y. Synthesis of Dichlorocyanomethyl‐Functionalized Oxindoles by Cascade Reactions Initiated by Copper(I)‐Catalytically Generated Dichlorocyanomethyl Radical. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Fengrui Che
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Jiangbin Zhong
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Linhan Yu
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Chaopeng Ma
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Chunzheng Yu
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Maorong Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Zhichen Hou
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Yuexia Zhang
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
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10
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Chen Z, Zhou Q, Wang Q, Chen P, Xiong B, Liang Y, Tang K, Liu Y. Iron‐Mediated Cyanoalkylsulfonylation/Arylation of Active Alkenes with Cycloketone Oxime Derivatives via Sulfur Dioxide Insertion. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000369] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zan Chen
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Quan Zhou
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Qiao‐Lin Wang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Pu Chen
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Bi‐Quan Xiong
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Yun Liang
- Key Laboratory of the Assembly and Application of Organic FunctionalMolecules of Hunan ProvinceHunan Normal University Changsha Hunan 410081 People's Republic of China
| | - Ke‐Wen Tang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
| | - Yu Liu
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang Hunan 414006 People's Republic of China
- Key Laboratory of the Assembly and Application of Organic FunctionalMolecules of Hunan ProvinceHunan Normal University Changsha Hunan 410081 People's Republic of China
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11
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Abstract
In spite of only a few naturally occurring products having one or more fluorine atoms, organofluorine compounds have been widely utilized in pharmaceutical, agrochemical, and functional material science fields due to the characteristic properties of the fluorine atom. Therefore, the development of new methods for the introduction of fluorine-containing functional groups has been a long-standing research topic. This article discusses our contributions to this area. The first topic is on the trifluoromethylations of C-C multiple bonds using Togni reagent based on our working hypothesis that hypervalent iodine could be activated by coordination of the carbonyl moiety to the Lewis acid catalyst. The second topic relates to asymmetric fluorofunctionalization of alkenes. A newly designed phase-transfer catalyst consisting of a carboxylate anion functioning as a phase-transfer agent and a primary hydroxyl group as a site that captures the anionic substrate was revealed to be an effective catalyst for asymmetric fluorolactonization. Inspired by the mechanistic studies of fluorolactonization, we produced a linked binaphthyl dicarboxylate catalyst, which catalyzes the 6-endo-fluorocyclization and the deprotonative fluorination of allylic amides in a highly enantioselective manner. The third topic is on C-H fluorofunctionalizations using either catalysis or photoactivation. Benzylic trifluoromethylation, which is still a rare reaction, using Togni reagent and aromatic C-H trifluoromethylation using Umemoto reagent under simple photoirradiation conditions were achieved. In addition, the Csp3-H fluorination of alkyl phthalimide derivatives is demonstrated.
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12
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Li D, Wang Y, Jia Z, Ou Z, Dong Y, Lv C, Fu G, Liang D. Cu-Mediated Synthesis of Indolines and Dihydroisoquinolinones through Arylperfluoroalkylation of Unactivated Alkenes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900680] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Dandan Li
- School of Chemistry and Chemical Engineering; Xuchang University; No. 88, Bayi Road, Xuchang, Henan 461000 P. R. China
| | - Yan Wang
- Department of Chemistry; Kunming University; 650214 Kunming P. R. China
| | - Zhenzhen Jia
- School of Chemistry and Chemical Engineering; Xuchang University; No. 88, Bayi Road, Xuchang, Henan 461000 P. R. China
| | - Zhaocheng Ou
- School of Chemistry and Chemical Engineering; Xuchang University; No. 88, Bayi Road, Xuchang, Henan 461000 P. R. China
| | - Yongrui Dong
- Department of Chemistry; Kunming University; 650214 Kunming P. R. China
| | - Cunjie Lv
- School of Chemistry and Chemical Engineering; Xuchang University; No. 88, Bayi Road, Xuchang, Henan 461000 P. R. China
| | - Guangbin Fu
- School of Chemistry and Chemical Engineering; Xuchang University; No. 88, Bayi Road, Xuchang, Henan 461000 P. R. China
| | - Deqiang Liang
- Department of Chemistry; Kunming University; 650214 Kunming P. R. China
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13
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Xia C, Wang K, Wang G, Duan G. Iron-catalyzed ortho trifluoromethylation of anilines via picolinamide assisted photoinduced C-H functionalization. Org Biomol Chem 2019. [PMID: 29528082 DOI: 10.1039/c8ob00511g] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A convenient, oxidant-free protocol was developed for the ortho trifluoromethylation of aniline via picolinamide assisted Fe-promoted C-H functionalization under ultraviolet irradiation. In this transformation acetone essentially acted as both a solvent to dissolve reactants and a low-cost radical initiator to efficiently generate a CF3 radical from Langlois' reagent. A broad substrate scope was tolerated and picolinamide bearing strong electron withdrawing groups also could be transformed into the corresponding products with acceptable yields. Furthermore, the value of this method has been highlighted via the efficient synthesis of the nonsteroidal anti-inflammatory drug floctafenine.
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Affiliation(s)
- Chengcai Xia
- Pharmacy College, Taishan Medical University, Taian 271016, China.
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14
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Guo J, Xu C, Liu X, Wang M. Aryltrifluoromethylative cyclization of unactivated alkenes by the use of PhICF 3Cl under catalyst-free conditions. Org Biomol Chem 2019; 17:2162-2168. [PMID: 30720035 DOI: 10.1039/c8ob03189d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A concise and catalyst-free aryltrifluoromethylative cyclization of unactivated alkenes has been developed herein. The use of PhICF3Cl as a powerful trifluoromethylating agent allows easy transformations. A set of trifluoroethylated carbocycles and aza-hereocycles were efficiently synthesized in good yield and selectivity. A broad substrate scope, mild reaction conditions, and easy operation would make this method well-suited for applications.
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Affiliation(s)
- Jia Guo
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, China
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15
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Zhang Z, Zhang L, Cao Y, Li F, Bai G, Liu G, Yang Y, Mo F. Mn-Mediated Electrochemical Trifluoromethylation/C(sp 2)-H Functionalization Cascade for the Synthesis of Azaheterocycles. Org Lett 2019; 21:762-766. [PMID: 30672710 DOI: 10.1021/acs.orglett.8b04010] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A general electrohemical strategy for the combined trifluoromethylation/C(sp2)-H functionalization using Langlois' reagent as the CF3 source under oxidant-free conditions was developed. Using Mn salts as the redox mediator, this method provides an efficient and sustainable means to access a variety of functionalized heterocycles bearing a CF3 moiety. Detailed mechanistic studies are consistent with the formation of CF3-bound high oxidation state Mn species, suggesting a transition-metal-mediated CF3 transfer mechanism for this trifluoromethylation/C(sp2)-H functionalization process.
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Affiliation(s)
| | | | | | | | | | | | - Yang Yang
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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16
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Guo J, Xu C, Wang L, Huang W, Wang M. Catalyst-free and selective trifluoromethylative cyclization of acryloanilides using PhICF3Cl. Org Biomol Chem 2019; 17:4593-4599. [DOI: 10.1039/c9ob00601j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Trifluoromethylative cyclization and biscyclization reactions of acryloanilides efficiently occurred under catalyst-free conditions.
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Affiliation(s)
- Jia Guo
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Cong Xu
- National Engineering Laboratory for Druggable Gene and Protein Screening
- School of Life Sciences
- Northeast Normal University
- Changchun
- China
| | - Ling Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Wanqiao Huang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Mang Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- College of Chemistry
- Northeast Normal University
- Changchun
- China
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17
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Yu H, Jiao M, Fang X, Xuan P. Synthesis of trifluoromethyl-containing isoindolinones from tertiary enamides via a cascade radical addition and cyclization process. RSC Adv 2018; 8:23919-23923. [PMID: 35540298 PMCID: PMC9081866 DOI: 10.1039/c8ra03696a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/15/2018] [Indexed: 01/13/2023] Open
Abstract
A radical trifluoromethylation reaction of tertiary enamides was investigated and trifluoromethyl-containing isoindolinones were prepared under mild conditions. Using TMSCF3 as a radical source, PhI(OAc)2 as an oxidant and KHF2 as an additive, tertiary enamides were converted to isoindolinones via a cascade addition and cyclization process in moderate to good yields. Radical trifluoromethylation and cyclization of tertiary enamides was developed and trifluoromethyl-containing isoindolinones were obtained in moderate to good yields.![]()
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Affiliation(s)
- Hui Yu
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Mingdong Jiao
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Xiaowei Fang
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
| | - Pengfei Xuan
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Substainability
- Tongji University
- P. R. China
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18
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Shi Y, Xiao H, Xu XH, Huang Y. Transition metal free decarboxylative fluoroalkylation of N-acrylamides with 3,3,3-trifluoro-2,2-dimethylpropanoic acid (TFDMPA). Org Biomol Chem 2018; 16:8472-8476. [DOI: 10.1039/c8ob02457j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,1-Dimethyl-2,2,2-trifluoroethyl substituted oxindoles were prepared by a novel transition metal-free decarboxylative fluoroalkylation of activated alkenes and C–H functionalization cascade process.
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Affiliation(s)
- Yingkun Shi
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Hongqing Xiao
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
| | - Yangen Huang
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
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19
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Gonda Z, Béke F, Tischler O, Petró M, Novák Z, Tóth BL. Erythrosine B Catalyzed Visible-Light Photoredox Arylation-Cyclization of N
-Alkyl-N
-aryl-2-(trifluoromethyl)acrylamides to 3-(Trifluoromethyl)indolin-2-one Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601493] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zsombor Gonda
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Ferenc Béke
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Orsolya Tischler
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Milán Petró
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Zoltán Novák
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Balázs L. Tóth
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Eötvös University; Department of Organic Chemistry; Pázmány Péter stny. 1/A 1117 Budapest Hungary
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20
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Liu T, Zheng D, Wu J. Synthesis of 3-((arylsulfonyl)methyl)indolin-2-ones via insertion of sulfur dioxide using anilines as the aryl source. Org Chem Front 2017. [DOI: 10.1039/c7qo00075h] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Facile assembly of 3-((arylsulfonyl)methyl)indolin-2-ones via insertion of sulfur dioxide starting from anilines, N-arylacrylamides and DABCO·(SO2)2 is realized.
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Affiliation(s)
- Tong Liu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Danqing Zheng
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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21
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Gao X, Dong W, Hu B, Gao H, Yuan Y, Xie X, Zhang Z. Visible-light induced tandem radical cyanomethylation and cyclization of N-aryl acrylamides: access to cyanomethylated oxindoles. RSC Adv 2017. [DOI: 10.1039/c7ra10090f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A visible-light induced cyanomethylation of N-aryl acrylamides with bromoacetonitrile followed by intramolecular cyclization has been explored.
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Affiliation(s)
- Xiaoshuang Gao
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Wuheng Dong
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Bei Hu
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Huang Gao
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Yao Yuan
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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22
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Li Y, Lu Y, Mao R, Li Z, Wu J. A photoinduced reaction of perfluoroalkyl halides with 1,3-diarylprop-2-yn-1-ones catalyzed by DABSO. Org Chem Front 2017. [DOI: 10.1039/c7qo00279c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The sulfur dioxide surrogate of DABCO·(SO2)2 is used as an efficient catalyst for the cleavage of the perfluoroalkyl-halogen bond under visible-light irradiation. A plausible mechanism supported by theoretical calculations is proposed.
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Affiliation(s)
- Yuewen Li
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Yiye Lu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Runyu Mao
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Zhiming Li
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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23
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Yang X, Liu W, Li L, Wei W, Li CJ. Photo-induced Carboiodination: A Simple Way to Synthesize Functionalized Dihydrobenzofurans and Indolines. Chemistry 2016; 22:15252-15256. [DOI: 10.1002/chem.201603608] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaobo Yang
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
- Institute of Catalysis for Energy and Environment; College of Chemistry & Chemical Engineering; Shenyang Normal University; Shenyang 110034 P. R. China
| | - Wenbo Liu
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Lu Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Wei Wei
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
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24
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Cheng J, Deng X, Wang G, Li Y, Cheng X, Li G. Intermolecular C–H Quaternary Alkylation of Aniline Derivatives Induced by Visible-Light Photoredox Catalysis. Org Lett 2016; 18:4538-41. [DOI: 10.1021/acs.orglett.6b02179] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jie Cheng
- Institute
of Chemistry and Biomedical Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Xia Deng
- Institute
of Chemistry and Biomedical Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Guoqiang Wang
- Institute
of Theoretical and Computational Chemistry, School of Chemistry and
Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ying Li
- Institute
of Chemistry and Biomedical Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Xu Cheng
- Institute
of Chemistry and Biomedical Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Guigen Li
- Institute
of Chemistry and Biomedical Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
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25
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Wang C, Chen Q, Guo Q, Liu H, Xu Z, Liu Y, Wang M, Wang R. Silver-Catalyzed Difluoroamidation of Activated Alkenes for the Construction of Difluorinated 3,3-Disubstituted Oxindoles. J Org Chem 2016; 81:5782-8. [DOI: 10.1021/acs.joc.6b01013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chao Wang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Qiao Chen
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Quanping Guo
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hong Liu
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhaoqing Xu
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yubing Liu
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Mengran Wang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical
Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
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26
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Pan X, Xia H, Wu J. Recent advances in photoinduced trifluoromethylation and difluoroalkylation. Org Chem Front 2016. [DOI: 10.1039/c6qo00153j] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recent advances in photoinduced trifluoromethylation and difluoroalkylation under photocatalysis are summarized. Most of the photoredox reactions proceed efficiently under mild conditions with simple operation. Various fluorinated reagents are developed and applied in different transformations.
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Affiliation(s)
- Xiaolin Pan
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Hongguang Xia
- Department of Biochemistry and Molecular Biology
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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27
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An Y, Kuang Y, Wu J. Synthesis of trifluoromethylated 3,4-dihydroquinolin-2(1H)-ones via a photo-induced radical cyclization of benzene-tethered 1,7-enynes with Togni reagent. Org Chem Front 2016. [DOI: 10.1039/c6qo00267f] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A photoinduced radical cyclization of benzene-tethered 1,7-enynes with Togni reagent in the presence of sodium iodide is developed. This transformation works well without any metals or photo-redox catalysts at room temperature.
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Affiliation(s)
- Yuanyuan An
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Yunyan Kuang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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