1
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Wang K, Cheng B, König B, Zhang D, Xu B, Wang S, Zhang G. Photocatalyzed 1,3-Bromodifluoroallylation of [1.1.1]Propellane with α-Trifluoromethylalkenes and KBr Salts. Org Lett 2024; 26:6889-6893. [PMID: 39106520 DOI: 10.1021/acs.orglett.4c02476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2024]
Abstract
Herein we unveil a visible-light-driven transition-metal-free 1,3-bromodifluoroallylation of [1.1.1]propellane. This reactivity is harnessed through organophotocatalysis, providing practical synthetic pathways to 1-brominated-3-gem-difluoroallylic bicyclo[1.1.1]pentane derivatives, particularly derived from readily available α-trifluoromethylalkenes and inexpensive KBr salts utilized as precursors for bromine radicals. Mechanistic investigations reveal that bromide anions quench the excited state of the photocatalyst, leading to the formation of bromine radicals, which react in a strain-release radical addition process rather than hydrogen atom abstraction with [1.1.1]propellane.
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Affiliation(s)
- Kaiping Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China
| | - Beiyi Cheng
- Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Burkhard König
- Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Duo Zhang
- Medicine Center, Guangxi University of Science and Technology, Liushi Road 257, 545006, Liuzhou, Guangxi, China
| | - Bingxin Xu
- Medicine Center, Guangxi University of Science and Technology, Liushi Road 257, 545006, Liuzhou, Guangxi, China
| | - Shuli Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China
| | - Guodong Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China
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2
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Ling J, Zhou L. Picking Two out of Three: Defluorinative Annulation of Trifluoromethyl Alkenes for the Synthesis of Monofluorinated Carbo- and Heterocycles. CHEM REC 2024; 24:e202300332. [PMID: 38251926 DOI: 10.1002/tcr.202300332] [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: 10/27/2023] [Revised: 01/01/2024] [Indexed: 01/23/2024]
Abstract
The increasing demand of organofluorine compounds in medicine, agriculture, and materials sciences makes sophisticated methods for their synthesis ever more necessary. Nowadays, not only the C-F bond formation but also the selective C-F bond cleavage of readily available poly- or perfluorine-containing compounds have become powerful tools for the effective synthesis of organofluorine compounds. The defluorinative cross-coupling of trifluoromethyl alkenes with various nucleophiles or radical precursors in an SN 2' manner is a convergent route to access gem-difluoroalkenes, which in turn react with nucleophiles or radical precursors via an SN V-type reaction. If the SN V reactions occur intramolecularly, the dual C-F bond cleavage of trifluoromethyl alkenes allows facile assembly of monofluorinated cyclic skeletons with structural complexity and diversity. In this personal account, we summarized the advances in this field on the basis of coupling and cyclization partners, including binucleophiles, alkynes, diradical precursors and radical precursors bearing a nucleophilic site. Accordingly, the annulation reactions can be achieved by base-mediated sequential SN 2'/SN V reactions, transition metal catalyzed or mediated reactions, photoredox catalysis, and the combination of photocatalytic reactions with SN V reaction. In the context of seminal works of others in this field, a concise summary of the contributions of the authors is also offered.
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Affiliation(s)
- Jiahao Ling
- Institute of Green Chemistry and Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Lei Zhou
- Institute of Green Chemistry and Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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3
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Back JH, Kwon Y, Cho H, Lee H, Ahn D, Kim HJ, Yu Y, Kim Y, Lee W, Kwon MS. Visible-Light-Curable Acrylic Resins toward UV-Light-Blocking Adhesives for Foldable Displays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2204776. [PMID: 35901501 DOI: 10.1002/adma.202204776] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Current technological advances in the organic light-emitting diode panel design of foldable smartphones demand advanced adhesives with UV-blocking abilities, beyond their conventional roles of bonding objects and relieving deformation stress. However, optically clear adhesives (OCAs) with UV-blocking ability cannot be prepared using conventional UV-curing methods relying on a photoinitiator. Herein, a new acrylic resin that can be efficiently cured using visible light without oxygen removal is presented, which may be used to develop UV-blocking OCAs for use in current flexible displays. A novel photocatalyst and a specific combination of additives facilitate sufficiently rapid curing under visible light in the presence of UV-absorbers. Only a very small amount of the highly active photocatalyst is required to prepare UV-blocking OCA films with very high transparency in the visible region. Using this system, a UV-blocking OCA that nearly meets the specifications of an OCA used in commercialized foldable smartphones is realized. This technology can also be utilized in other applications that require highly efficient visible light curing, such as optically clear resins, dental resins, and 3D/4D-printable materials.
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Affiliation(s)
- Jong-Ho Back
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yonghwan Kwon
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hyeju Cho
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
| | - Huesoo Lee
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
| | - Dowon Ahn
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
| | - Hyun-Joong Kim
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, 08826, Republic of Korea
| | - Youngchang Yu
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
| | - Youngdo Kim
- Samsung Display Co., Ltd., Cheonan, 31086, Republic of Korea
| | - Wonjoo Lee
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea
| | - Min Sang Kwon
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
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4
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Li Y, Zhang W, Yang S, Wang X, Liu Y, Ji D, Chen Q. Nickel‐Catalyzed Unsymmetrical Bis‐Allylation of Alkynes. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202300036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Ying Li
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wei‐Song Zhang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Sa‐Na Yang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiao‐Yu Wang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yan Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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5
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Li Y, Zhang WS, Yang SN, Wang XY, Liu Y, Ji DW, Chen QA. Nickel-Catalyzed Unsymmetrical Bis-Allylation of Alkynes. Angew Chem Int Ed Engl 2023; 62:e202300036. [PMID: 36826223 DOI: 10.1002/anie.202300036] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 02/25/2023]
Abstract
The catalytic bis-allylation of alkynes is an important but challenging protocol to construct all-carbon tetra-substituted alkenes. Particularly, the catalytic unsymmetrical bis-allylation of alkynes remains as an underexplored task to date. We herein report an unprecedented unsymmetrical bis-allylation by simultaneously utilizing electrophilic trifluoromethyl alkene and nucleophilic allylboronate as the allylic reagents. With the aid of robust Ni0 /NHC catalysis, valuable skipped trienes can be obtained in high regio- and stereo-selectivities under mild conditions. Mechanistic studies indicate that the reaction may proceed through a β-fluorine elimination of a nickelacycle followed by a transmetalation step with allylboronate. The present method exhibits a good tolerance of various functional groups. Besides, the skipped triene products can undergo an array of elaborate transformations, which highlights the potential applications of this strategy.
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Affiliation(s)
- Ying Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wei-Song Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Sa-Na Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiao-Yu Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yan Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ding-Wei Ji
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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6
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Zhang G, Wang L, Cui L, Gao P, Chen F. Deaminative defluoroalkylation of α-trifluoromethylalkenes enabled by photoredox catalysis. Org Biomol Chem 2023; 21:294-299. [PMID: 36510767 DOI: 10.1039/d2ob02114e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein, we disclose a new photoredox-catalysed strategy to access gem-difluoroallylarenes from α-trifluoromethylalkenes with sterically hindered primary amines via C-N and C-F bond activation. This deaminative and defluorinative allylation is generally compatible with diverse functional groups and sterically hindered α-3° and 2° primary amines.
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Affiliation(s)
- Guodong Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Liping Cui
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Pan Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Feng Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
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7
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Organophotoredox-catalyzed ring-opening gem-difluoroallylation of nonstrained cycloalkanols. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Atriardi SR, Kim J, Anita Y, Woo SK. Synthesis of
gem
‐difluoroalkenes
via
photoredox‐catalyzed
defluoroaryloxymethylation of
α‐trifluoromethyl
alkenes. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12633] [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)
| | - Jae‐Young Kim
- Department of Chemistry University of Ulsan Ulsan Korea
| | - Yulia Anita
- Department of Chemistry University of Ulsan Ulsan Korea
- Research Center for Chemistry National Research and Innovation Agency Jakarta Pusat Indonesia
| | - Sang Kook Woo
- Department of Chemistry University of Ulsan Ulsan Korea
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9
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Wang B, Wang CT, Li XS, Liu XY, Liang YM. Visible-Light-Induced C-F and C-N Bond Cleavage for the Synthesis of gem-Difluoroalkenes. Org Lett 2022; 24:6566-6570. [PMID: 36053062 DOI: 10.1021/acs.orglett.2c02528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we describe a novel and efficient photoredox catalytic radical addition/defluoroalkylation coupling reaction between primary amines and trifluoromethyl-substituted alkenes. A series of gem-difluoroalkenes were synthesized via C-N bond cleavage of α-3°, α-2°, and α-1° amines under visible light irradiation. This reaction is characterized by a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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10
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Zeng W, Li L, Wang C, Wang D, Zhou L. Synthesis of 3‐Amino‐1‐(difluoromethylidene)‐tetralins via Relay Photocatalytic Cascade Reactions of Arylalanines and 2‐Bromo‐3,3,3‐trifluoropropene. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Yang C, Chen J, Li X, Yang X, Zhu Y, Wu S, Zeng G, Wang K, Fan B. Photocatalyzed
gem
‐Difluoroallylation of Tertiary Amines with α‐Trifluoromethyl Alkenes. ChemistrySelect 2022. [DOI: 10.1002/slct.202201188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chunhui Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
| | - Xinhan Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
| | - Xiaoju Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
| | - Yuanbin Zhu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd Qingfeng industrial park Lufeng 651200 Yunnan Province China
| | - Shiyuan Wu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd Qingfeng industrial park Lufeng 651200 Yunnan Province China
| | - Guangzhi Zeng
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
| | - Kaimin Wang
- School of Chemistry and Environment Yunnan Minzu University Yunnan Kunming 650500 China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources (Yunnan Minzu University) State Ethnic Affairs Commission & Ministry of Education Yunnan Minzu University Kunming 650500 China (Baomin Fan
- School of Chemistry and Environment Yunnan Minzu University Yunnan Kunming 650500 China
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12
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Chen B, Yu K, Wu XF. Visible-light-induced defluorinative carbonylative coupling of alkyl iodides with α-trifluoromethyl substituted styrenes. Org Biomol Chem 2022; 20:5264-5269. [PMID: 35723274 DOI: 10.1039/d2ob00916a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-mediated defluorinative carbonylative cross-coupling of alkyl iodides with α-trifluoromethyl styrenes has been developed. The reaction occurs at room temperature under blue light irradiation, and various gem-difluoroalkenes were obtained in moderate to good yields. Synthetic transformations of the obtained product were performed as well.
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Affiliation(s)
- Bo Chen
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, Liaoning, China.
| | - Kai Yu
- Shenyang Gold Jyouki Technology Co., Ltd, 110023 Fushun, China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, Liaoning, China. .,Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
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13
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Ma T, Li X, Ping Y, Kong W. Synthesis of
gem
‐Difluoroalkenes
via
Ni‐Catalyzed Three‐Component
Defluorinative Reductive
Cross‐Coupling
of Organohalides, Alkenes and Trifluoromethyl Alkenes. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Teng Ma
- The Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 People's Republic of China
| | - Xiao Li
- The Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 People's Republic of China
| | - Yuanyuan Ping
- The Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 People's Republic of China
| | - Wangqing Kong
- The Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 People's Republic of China
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14
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Luo C, Zhou Y, Chen H, Wang T, Zhang ZB, Han P, Jing LH. Photoredox Metal-Free Allylic Defluorinative Silylation of α-Trifluoromethylstyrenes with Hydrosilanes. Org Lett 2022; 24:4286-4291. [PMID: 35674520 DOI: 10.1021/acs.orglett.2c01690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report an efficient strategy that combines organic photoredox and hydrogen atom transfer to deliver gem-difluoroallylsilanes via defluorinative silylation of α-trifluoromethylstyrenes using hydrosilanes as silicon sources. This protocol provides an environmentally friendly approach for the preparation of structurally diverse gem-difluoroallylsilanes with excellent functional group compatibility and renders it suitable for late-stage modification of bioactive and complex molecules.
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Affiliation(s)
- Cong Luo
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Yang Zhou
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Hang Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Ting Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Zheng-Bing Zhang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Pan Han
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Lin-Hai Jing
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
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15
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Wang Q, Yue L, Bao Y, Wang Y, Kang D, Gao Y, Yuan Z. Oxalates as Activating Groups for Tertiary Alcohols in Photoredox-Catalyzed gem-Difluoroallylation To Construct All-Carbon Quaternary Centers. J Org Chem 2022; 87:8237-8247. [PMID: 35612278 DOI: 10.1021/acs.joc.2c00664] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Construction of challenging and important all-carbon quaternary centers has received growing attention. Herein, with oxalates as activating groups for tertiary alcohols, we report photoredox-catalyzed gem-difluoroallylation to construct all-carbon quaternary centers enabled by efficient tertiary radical addition to α-trifluoromethyl alkenes. This transformation shows good functional group tolerance for both α-trifluoromethyl alkenes and oxalates. Moreover, this strategy is also successfully applied to the synthesis of monofluoralkenes from the corresponding electron-rich gem-difluoroalkenes and cesium tertiary alkyl oxalates under modified conditions.
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Affiliation(s)
- Qing Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Ling Yue
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yanyang Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yanan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Danni Kang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yan Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Zheliang Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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16
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Fu Y, Shi H, Lei S, Shi L, Li H. Cu catalyzed [4 + 2] cycloaddition for the synthesis of highly substituted 3-fluoropyridines. Org Biomol Chem 2022; 20:3731-3736. [PMID: 35467681 DOI: 10.1039/d2ob00133k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper catalyzed annulation-aromatization of benzyl trifluoromethyl ketimines with 3-acryloyloxazolidin-2-ones for the synthesis of 3-fluoropyridines through double C-F bond cleavages has been developed. In this approach, the annulation occurred between the in situ formed dienes from trifluoromethyl ketimines via the first C-F bond cleavage and 3-acryloyloxazolidin-2-ones. Then the aromatization afforded 3-fluoropyridines in moderate yields through the second C-F bond cleavage. The 3-fluoropyridine products could be further hydrolyzed to multi-substituted 3-pyridinecarboxylic acids.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Shengshu Lei
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Lei Shi
- Huabao Flavours & Fragrances Co., Ltd., 1299 Yecheng Road, Shanghai 201822, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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17
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Guo F, Wang H, Ye X, Tan CH. Advanced Synthesis Using Photocatalysis Involved Dual Catalytic System. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fenfen Guo
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Hong Wang
- Zhejiang University of Technology College of Pharmaceutical Science CHINA
| | - Xinyi Ye
- Zhejiang University of Technology College of Pharmaceutical Science 18 Chaowang Road 310014 Hangzhou CHINA
| | - Choon-Hong Tan
- Nanyang Technological University School of Physical and Mathematical Sciences SINGAPORE
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18
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Deng Y, He J, Cao S, Qian X. Advances in cycloaddition and hydroaddition reaction of α-(trifluoromethyl)styrenes without defluorination: An alternative approach to CF3-containing compounds. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Kim H, Jung Y, Cho SH. Defluorinative C-C Bond-Forming Reaction of Trifluoromethyl Alkenes with gem-(Diborylalkyl)lithiums. Org Lett 2022; 24:2705-2710. [PMID: 35380841 DOI: 10.1021/acs.orglett.2c00809] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the transition-metal-free defluorinative C-C bond-forming reaction of trifluoromethyl alkenes with gem-(diborylalkyl)lithiums. This synthetic strategy provides access to a variety of 4,4-difluoro homoallylic diboronate esters, which serve as versatile intermediates in the efficient preparation of valuable gem-difluoroalkene derivatives. Further synthetic modifications are conducted to demonstrate the synthetic utility of the obtained 4,4-difluoro homoallylic diboronate esters.
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Affiliation(s)
- Haeun Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Yujin Jung
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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20
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Xiao J, Montgomery J. Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Alkenes. ACS Catal 2022; 12:2463-2471. [PMID: 35992737 PMCID: PMC9390876 DOI: 10.1021/acscatal.1c05801] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl alkenes with aldehydes using a nickel complex of a 6,6'-disubstituted bipyridine ligand with zinc metal as the terminal reductant. The protocol is distinguished by its broad substrate scope, mild conditions, and simple catalytic setup. Reaction outcomes are consistent with the intermediacy of an α-silyloxy(alkyl)nickel intermediate generated by a low-valent nickel catalyst, silyl electrophile, and the aldehyde substrate. Mechanistic findings with cyclopropanecarboxaldehyde provide insights into nature of the reactive intermediates and illustrate fundamental reactivity differences that are governed by subtle changes in ligand and substrate structure.
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Affiliation(s)
| | - John Montgomery
- Corresponding authors: John Montgomery - Department of Chemistry, University of Michigan, 930 N. University Ave. Ann Arbor, MI 48109-1055, USA,
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21
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C(sp3)–F Bond Transformation of Perfluoroalkyl Compounds Mediated by Visible-Light Photocatalysis: Spin-Center Shifts and Radical/Polar Crossover Processes via Anionic Intermediates. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1755-3476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractDue to its large bond energy, precisely controllable C–F bond activation is a significant challenge in organic synthesis. A single C(sp3)–F bond transformation of perfluoroalkyl groups is particularly desirable to supply functionalized perfluoroalkyl compounds offering properties that are potentially useful in pharmaceutical and materials chemistry. Recently, the single defluorinative transformation of perfluoroalkyl compounds has been developed via visible-light photocatalysis. Herein, we summarize this field via two main topics. Topic 1 covers the transformations of C(sp3)–F bonds in either perfluoroalkylarenes or perfluoroalkane carbonyl compounds via a defluorinative spin-center shift in the radical anion intermediates. Topic 2 addresses the defluorinative transformations of α-trifluoromethyl alkenes to give gem-difluoroalkenes via a radical/polar crossover process.1 Introduction2 C(sp3)–F Transformations via Defluorinative Spin-Center Shifts3 C(sp3)–F Transformations via a Radical/Polar Crossover Process4 Conclusions
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22
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Li S, Shu W. Recent advances in radical enabled selective C sp3-F bond activation of multifluorinated compounds. Chem Commun (Camb) 2022; 58:1066-1077. [PMID: 34981805 DOI: 10.1039/d1cc06446k] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fluorine-containing molecules have found broad applications in pharmaceutical and agrochemical industries as introducing fluorine into a molecule could significantly tune the biological activities of parent molecules. Thus, the synthesis of fluorine-containing molecules has received substantial attention over the past few decades. As a complementary strategy for the synthesis of fluorinated compounds through new Csp3-F bonds formation, selective cleavage of inert Csp3-F bonds from easily-available and cost-effective multifluorinated molecules, such as fluoroalkylaromatics, α-trifluoromethyl alkenes and α-multifluorinated carbonyl compounds, has been emerging as an attractive alternative to access fluorine-containing molecules. Moreover, the inherent nature of radical reactions offers the opportunity for the selective Csp3-F functionalizations to occur under mild conditions. In this regard, the development of photoredox catalysis, transition-metal catalysis, or electrochemistry to enable radical species generation via selective Csp3-F cleavage has gained broad attention and substantial progress has been made over recent years. This highlight summerizes the recent advances in the single-electron-transfer enabled selective functionalizations of Csp3-F bonds in multifluorinated compounds via radical pathways.
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Affiliation(s)
- Sifan Li
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China.
| | - Wei Shu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China.
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23
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Luo X, Wang S, Lei A. Electrochemical‐induced hydroxysulfonylation of α‐CF3 alkenes to access tertiary β‐hydroxysulfones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101393] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Yan S, Yu W, Zhang J, Fan H, Lu Z, Zhang Z, Wang T. Access to gem-Difluoroalkenes via Organic Photoredox-Catalyzed gem-Difluoroallylation of Alkyl Iodides. J Org Chem 2022; 87:1574-1584. [PMID: 34964644 DOI: 10.1021/acs.joc.1c02659] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An organic photoredox-catalyzed gem-difluoroallylation of α-trifluoromethyl alkenes with alkyl iodides via C-F bond cleavage for the synthesis of gem-difluoroalkene derivatives is reported. This transition-metal-free transformation utilized a readily available organic dye 4CzIPN as the sole photocatalyst and employed a common chemical N,N,N',N'-tetramethylethylenediamine as the radical activator of alkyl iodides via halogen-atom transfer. In addition, a variety of iodides, including primary, secondary, and tertiary alkyl iodides, were tolerated and provided good to high yields.
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Affiliation(s)
- Songlin Yan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Weijie Yu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Jianye Zhang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Hongmei Fan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Zhifeng Lu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Zhenming Zhang
- Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
| | - Tao Wang
- National Research Center for Carbohydrate Synthesis and Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P.R. China
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25
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Li F, Pei C, Koenigs RM. Photokatalytische gem‐Difluorolefinierungsreaktionen durch eine formale C−C‐Kupplungs/Defluorierungsreaktion mit Diazoacetaten. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fang Li
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Deutschland
| | - Chao Pei
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Deutschland
| | - Rene M. Koenigs
- RWTH Aachen University Institute of Organic Chemistry Landoltweg 1 52074 Aachen Deutschland
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26
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Xiong B, Li Y, Zhang J, Liu J, Zhang X, Lian Z. Cross‐Electrophile Coupling between Aryl/Vinyl Triflates and Vinyl Tosylates for the Synthesis of gem‐Difluoroalkenes via Ni/Pd Cooperative Catalysis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Yue Li
- Sichuan University West China Hospital CHINA
| | - Jinyu Zhang
- Sichuan University West China Hospital CHINA
| | | | | | - Zhong Lian
- Sichuan University West China Hospital CHINA
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27
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Chang Z, Wang J, Lu X, Fu Y. Synthesis of gem-Difluoroalkenes through Nickel-Promoted Electrochemical Reductive Cross-Coupling. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Xu W, Xia C, Shao Q, Zhang Q, Liu M, Zhang H, Wu M. Visible-light-induced transition-metal-free defluorosilylation of α-trifluoromethylalkenes via hydrogen atom transfer of silanes. Org Chem Front 2022. [DOI: 10.1039/d2qo00894g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green and feasible synthetic protocol for silyl gem-difluoroalkenes was developed using α-trifluoromethylalkenes and silanes via the synergistic combination of photoredox and hydrogen-atom transfer catalysis under visible light irradiation.
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Affiliation(s)
- Wengang Xu
- College of New Energy, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Congjian Xia
- College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Qi Shao
- College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Qiao Zhang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Mingrui Liu
- College of New Energy, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Hongwei Zhang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (China East), 266580, Qingdao, P. R. China
| | - Mingbo Wu
- College of New Energy, China University of Petroleum (China East), 266580, Qingdao, P. R. China
- College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (China East), 266580, Qingdao, P. R. China
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29
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Zhang H, Liang M, Zhang X, He MK, Yang C, Guo L, Xia W. Electrochemical synthesis of functionalized gem-difluoroalkenes with diverse alkyl sources via a defluorinative alkylation process. Org Chem Front 2022. [DOI: 10.1039/d1qo01460a] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An electrochemical defluorinative alkylation of α-trifluoromethyl alkenes is described. This reaction enables the preparation of functionalized gem-difluoroalkenes with diverse alkyl sources including organohalides, NHP esters, and Katritzky salts.
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Affiliation(s)
- Haoxiang Zhang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Mengze Liang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Xiao Zhang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Meng-Ke He
- Wenzhou University, Wenzhou, Zhejiang 325000, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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30
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Yuan WQ, Liu YT, Ni YQ, Liu YZ, Pan F. Metal-free photocatalytic intermolecular trifluoromethylation- gem-difluoroallylation of unactivated alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00764a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, transition-metal-free, photocatalytic three-component intermolecular trifluoromethylation-gem-difluoroallylation of unactivated alkenes has been achieved.
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Affiliation(s)
- Wan-Qiang Yuan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
| | - Yu-Tao Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
| | - Yu-Qing Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
| | - Yong-Ze Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
| | - Fei Pan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
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31
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Xia PJ, Liu F, Li SH, Xiao JA. Tunable photocatalytic oxysulfonylation and chlorosulfonylation of α-CF3 alkenes with sulfonyl chlorides. Org Chem Front 2022. [DOI: 10.1039/d1qo01686e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Tunable photoredox-catalyzed chlorosulfonylation and oxysulfonylation of α-trifluoromethylstyrenes with sulfonyl chloride were facilely achieved by simply manipulating the photocatalyst and solvent.
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Affiliation(s)
- Peng-Ju Xia
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Fu Liu
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Shu-Hui Li
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, 530001, P. R. China
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32
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Tian J, Sun Z, Li W, Wang D, Zhou L. Visible-light-promoted defluorinative ring-opening gem-difluoroallylation of cycloalkanols using 1-trifluoromethyl alkenes. NEW J CHEM 2022. [DOI: 10.1039/d2nj00599a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A photocatalytic redox-neutral defluorinative ring-opening coupling of cycloalkanols with α-trifluoromethyl alkenes for the synthesis of gem-difluoroalkenes bearing a distal carbonyl group was developed.
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Affiliation(s)
- Jiabao Tian
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, P. R. China
| | - Zhengchang Sun
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Weiyu Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Duozhi Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, P. R. China
| | - Lei Zhou
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
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33
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Zhao F, Zhou W, Zuo Z. Recent Advances in the Synthesis of Difluorinated Architectures from Trifluoromethyl Groups. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101234] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Feng Zhao
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine School of Pharmaceutical Sciences Hunan University of Medicine Huaihua 418000 People's Republic of China
| | - Wenlong Zhou
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine School of Pharmaceutical Sciences Hunan University of Medicine Huaihua 418000 People's Republic of China
| | - Zuo Zuo
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine School of Pharmaceutical Sciences Hunan University of Medicine Huaihua 418000 People's Republic of China
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34
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Zhou L. Recent Advances in C-F Bond Cleavage Enabled by Visible Light Photoredox Catalysis. Molecules 2021; 26:molecules26227051. [PMID: 34834143 PMCID: PMC8621615 DOI: 10.3390/molecules26227051] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/16/2021] [Accepted: 11/19/2021] [Indexed: 12/05/2022] Open
Abstract
The creation of new bonds via C-F bond cleavage of readily available per- or oligofluorinated compounds has received growing interest. Using such a strategy, a myriad of valuable partially fluorinated products can be prepared, which otherwise are difficult to make by the conventional C-F bond formation methods. Visible light photoredox catalysis has been proven as an important and powerful tool for defluorinative reactions due to its mild, easy to handle, and environmentally benign characteristics. Compared to the classical C-F activation that proceeds via two-electron processes, radicals are the key intermediates using visible light photoredox catalysis, providing new modes for the cleavage of C-F bonds. In this review, a summary of the visible light-promoted C-F bond cleavage since 2018 was presented. The contents were classified by the fluorosubstrates, including polyfluorinated arenes, gem-difluoroalkenes, trifluoromethyl arenes, and trifluoromethyl alkenes. An emphasis is placed on the discussion of the mechanisms and limitations of these reactions. Finally, my personal perspective on the future development of this rapidly emerging field was provided.
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Affiliation(s)
- Lei Zhou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
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35
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Claraz A, Allain C, Masson G. Electroreductive Cross-Coupling of Trifluoromethyl Alkenes and Redox Active Esters for the Synthesis of Gem-Difluoroalkenes. Chemistry 2021; 28:e202103337. [PMID: 34761845 DOI: 10.1002/chem.202103337] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Indexed: 12/23/2022]
Abstract
An electroreductive access to gem-difluoroalkenes has been developed through the decarboxylative/defluorinative coupling of N-hydroxyphtalimides esters and α-trifluoromethyl alkenes. The electrolysis is performed under very simple reaction conditions in an undivided cell using cheap carbon graphite electrodes. This metal-free transformation features broad scope with good to excellent yields. Tertiary, secondary as well as primary alkyl radicals could be easily introduced. α-aminoacids L-aspartic and L-glutamic acid-derived redox active esters were good reactive partners furnishing potentially relevant gem-difluoroalkenes. In addition, it has been demonstrated that our electrosynthetic approach toward the synthesis of gem-difluoroalkenes could use an easily prepared Kratitsky salt as alkyl radical precursor via a deaminative/defluorinative carbofunctionalization of trifluoromethylstyrene.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles, CNRS, UPR2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette cedex, France
| | - Clémence Allain
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190, Gif-sur-Yvette, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS, UPR2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette cedex, France
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36
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Li F, Pei C, Koenigs RM. Photocatalytic gem-Difluoroolefination Reactions by a Formal C-C Coupling/Defluorination Reaction with Diazoacetates. Angew Chem Int Ed Engl 2021; 61:e202111892. [PMID: 34716734 PMCID: PMC9300101 DOI: 10.1002/anie.202111892] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 12/23/2022]
Abstract
The photolysis of diazoalkanes to conduct singlet carbene transfer reactions of colored diazoalkanes has recently attracted significant interest in organic synthesis. Herein, we describe a photocatalytic approach that allows the access of triplet carbene intermediates via energy transfer to conduct highly efficient gem‐difluoroolefination reactions with α‐trifluoromethyl styrenes. The use of a tertiary amines proved pivotal to unlock this unusual reaction pathway and to prevent undesired cyclopropanation pathways. The amine further facilitates the ultimate abstraction of fluoride to yield gem‐difluoroolefins (43 examples, up to 88 % yield), which is supported by experimental and theoretical mechanistic studies. We explored this synthesis method with a broad substrate scope, ranging from simple olefins and heterocyclic olefins towards the decoration of pharmaceutically relevant building blocks.
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Affiliation(s)
- Fang Li
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074, Aachen, Germany
| | - Chao Pei
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074, Aachen, Germany
| | - Rene M Koenigs
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074, Aachen, Germany
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37
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Chen YX, Wang ZJ, Xiao JA, Chen K, Xiang HY, Yang H. Visible-Light-Driven Sulfonation of α-Trifluoromethylstyrenes: Access to Densely Functionalized CF 3-Substituted Tertiary Alcohol. Org Lett 2021; 23:6558-6562. [PMID: 34342456 DOI: 10.1021/acs.orglett.1c02365] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reported herein is a visible-light-induced sulfonation of α-trifluoromethylstyrenes with sodium sulfinates, which provides a series of α-trifluoromethyl-β-sulfonyl tertiary alcohols. This new synthetic protocol is enabled by a charge-transfer complex between oxygen and sulfinates, featuring broad substrate scope and scalability. Excellent functional group compatibility and chemoselectivity render this method suitable for sulfonation of pharmaceutically relevant molecules. In the presence of D2O, deuteriotrifluorinated products were also obtained, further demonstrating the flexibility and synthetic potentials of this strategy.
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Affiliation(s)
- Yi-Xuan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhu-Jun Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, Guangxi, 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.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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38
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Xu S, Deng Y, He J, Zeng Q, Liu C, Zhang Y, Zhu B, Cao S. Synthesis of CF 3-Containing Linear Nitriles from α-(Trifluoromethyl)styrenes. Org Lett 2021; 23:5853-5858. [PMID: 34296878 DOI: 10.1021/acs.orglett.1c01988] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four unprecedented base-catalyzed/mediated nucleophilic additions of TMSCN to α-(trifluoromethyl)styrenes and 2-trifluoromethyl enynes were developed. The reaction proceeded smoothly at room temperature under mild and transition-metal-free conditions without affecting the trifluoromethyl group and afforded the corresponding CF3-containing alkyl, alkynyl, and butadienyl nitriles in moderate to excellent yields in a highly regioselective manner, respectively.
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Affiliation(s)
- Sixue Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Yupian Deng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Jingjing He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Qianding Zeng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Chuan Liu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Yi Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Bin Zhu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
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39
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Zhang C, Lin Z, Zhu Y, Wang C. Chromium-Catalyzed Allylic Defluorinative Ketyl Olefin Coupling. J Am Chem Soc 2021; 143:11602-11610. [PMID: 34291644 DOI: 10.1021/jacs.1c04531] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein we report a chromium-catalyzed allylic defluorinative ketyl olefin coupling between aldehydes and α-trifluoromethyl alkenes, which provides novel and efficient access to diverse gem-difluorohomoallylic alcohols. Remarkably, the high chemoselectivity of this reaction enables the conversion of the formyl moiety in the presence of various easily reducible functionalities including ketone, organohalides, aziridine, sulfone, alkyne, and unactivated alkene. The utility of this method is demonstrated by various simple derivatizations of the attached hydroxyl group of the coupling products. The preliminary mechanistic investigations suggest a reaction pathway with a rate-limiting C-C forming step followed by facile β-fluoro elimination.
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Affiliation(s)
- Chang Zhang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yufei Zhu
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, People's Republic of China
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40
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Gao QS, Niu Z, Chen Y, Sun J, Han WY, Wang JY, Yu M, Zhou MD. Photoredox Generation of N-Centered Hydrazonyl Radicals Enables the Construction of Dihydropyrazole-Fused gem-Difluoroalkenes. Org Lett 2021; 23:6153-6157. [PMID: 34269587 DOI: 10.1021/acs.orglett.1c02275] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient visible-light-promoted N-radical-mediated tandem radical cyclization/defluorinated alkylation of β,γ-unsaturated hydrazones, and α-trifluoromethyl alkenes is described. This protocol provides a general and effective route to synthesize various dihydropyrazole-fused gem-difluoroalkenes at moderate to excellent yields under redox-neutral, metal-free, and mild conditions.
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Affiliation(s)
- Qi-Sheng Gao
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Zhuo Niu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Wei-Ying Han
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Miao Yu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
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41
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Hu QP, Cheng J, Wang Y, Shi J, Wang BQ, Hu P, Zhao KQ, Pan F. Remote Regioselective Radical C-H Functionalization of Unactivated C-H Bonds in Amides: The Synthesis of gem-Difluoroalkenes. Org Lett 2021; 23:4457-4462. [PMID: 33983034 DOI: 10.1021/acs.orglett.1c01385] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The site-selective functionalization of unactivated aliphatic amines is an attractive and challenging synthetic approach. We herein report a general strategy for the remote site-selective functionalization of unactivated C(sp3)-H bonds in amides by photogenerated amidyl radicals to form gem-difluoroalkenes with trifluoromethyl-substituted alkenes. The site selectivity is controlled by a 1,5-hydrogen atom transfer (HAT) process of the amide. This photocatalyzed transformation shows both chemo- and site-selectivity, facilitating the formation of a secondary, tertiary, or quaternary carbon center.
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Affiliation(s)
- Qu-Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Jing Cheng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Ying Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Jie Shi
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Fei Pan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
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42
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Yuan Y, Zhang S, Sun Z, Su Y, Ma Q, Yuan Y, Jia X. Oxidation of the inert sp 3 C-H bonds of tetrahydroisoquinolines through C-H activation relay (CHAR): construction of functionalized isoquinolin-1-ones. Chem Commun (Camb) 2021; 57:3347-3350. [PMID: 33659968 DOI: 10.1039/d1cc00550b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A TBN/O2-initiated oxidation of the relatively inert 3,4-C-H bonds of THIQs was accomplished, in which the existence of an α-phosphoric ester group is crucial to enable dioxygen trapping and intramolecular HAT (C-H activation relay, CHAR), realizing the synthesis of a series of isoquinolin-1-ones in high yields. The mechanistic study confirmed that the formation of the 3,4-double bond is mediated by the CHAR process. This work provides a new strategy to achieve remote C-H bond activation.
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Affiliation(s)
- Yuan Yuan
- School of Chemistry & Chemical Engineering, Yangzhou University, Siwangting Road 180, Yangzhou, Jiangsu 225002, China.
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43
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Guo YQ, Wu Y, Wang R, Song H, Liu Y, Wang Q. Photoredox/Hydrogen Atom Transfer Cocatalyzed C–H Difluoroallylation of Amides, Ethers, and Alkyl Aldehydes. Org Lett 2021; 23:2353-2358. [DOI: 10.1021/acs.orglett.1c00546] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan-Qiang Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yifan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Ruiguo Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People’s Republic of China
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44
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Zhang M, Zhang Z, He Y, Zou T, Qi Z, Fu Q, Wei J, Lu J, Wei S, Yi D. Photocatalytic Deoxygenative Carboimination towards Functionalized Pyrrolines by Using Unstrained
γ
,
δ
‐Unsaturated Oximes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100038] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Min Zhang
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Zhijie Zhang
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Yangsen He
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Ting Zou
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Zhongyu Qi
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Qiang Fu
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Jun Wei
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Ji Lu
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Siping Wei
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
| | - Dong Yi
- Department of Medicinal Chemistry School of Pharmacy Southwest Medical University Luzhou 646000 People's Republic of China
- Department of Pharmacy Affiliated Hospital Southwest Medical University Luzhou 646000 People's Republic of China
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45
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46
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Ren S, Fu J, Cheng D, Li X, Xu X. A facile access for multisubstituted trifluoromethyl olefins by visible light catalysis. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152829] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Liao LL, Cao GM, Jiang YX, Jin XH, Hu XL, Chruma JJ, Sun GQ, Gui YY, Yu DG. α-Amino Acids and Peptides as Bifunctional Reagents: Carbocarboxylation of Activated Alkenes via Recycling CO2. J Am Chem Soc 2021; 143:2812-2821. [DOI: 10.1021/jacs.0c11896] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Li-Li Liao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Guang-Mei Cao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Yuan-Xu Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Xing-Hao Jin
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Xin-Long Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Jason J. Chruma
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Guo-Quan Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Yong-Yuan Gui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People’s Republic of China
| | - Da-Gang Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
- Beijing National Laboratory for Molecular Sciences, Beijing 100190, People’s Republic of China
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48
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Fu Y, Qin C, Zhang Z, Shi H, Zhao J, Gong X, Shi L, Li H. [4 + 2] Cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF 3. Org Chem Front 2021. [DOI: 10.1039/d1qo00639h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free [4 + 2] cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF3 has been developed to afford cis-tetrahydroxypyridine products in moderate yields under mild conditions.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Cong Qin
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Zhiqiang Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Jianbo Zhao
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Xueqing Gong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Lei Shi
- Huabao Flavours & Fragrances Co
- Ltd
- Shanghai 201822
- China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
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49
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Singh PP, Srivastava V. Recent advances in using 4DPAIPN in photocatalytic transformations. Org Biomol Chem 2021; 19:313-321. [DOI: 10.1039/d0ob01884h] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1,3-Dicyano-2,4,5,6-tetrakis(diphenylamino)-benzene has emerged as a powerful and attractive metal-free organophotocatalyst for organic transformation and is expected to contribute to a great extent toward the advancement and development of synthetic methodologies.
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Affiliation(s)
- Praveen P. Singh
- Department of Chemistry
- United College of Engineering & Research
- Prayagraj 211010
- India
| | - Vishal Srivastava
- Department of Chemistry
- CMP Degree College
- University of Allahabad
- Prayagraj 211002
- India
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50
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Yan G, Qiu K, Guo M. Recent advance in the C–F bond functionalization of trifluoromethyl-containing compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00037c] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The C–F bond is the strongest single bond in organic compounds.
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Affiliation(s)
- Guobing Yan
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
| | - Kaiying Qiu
- Department of Chemistry
- Lishui University
- Lishui 323000
- China
| | - Ming Guo
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
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