1
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Lu J, Chen S, Wu M, Yin H, Lin X, Wu W, Weng Z. Copper-Catalyzed Oxidative Synthesis of 3-Aryl-5-fluoroalkyl-1,3,4-oxadiazol-2(3 H)-ones Using Perfluorocarboxylic Anhydride as a Reagent. J Org Chem 2024; 89:14447-14453. [PMID: 39319749 DOI: 10.1021/acs.joc.4c01900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
A copper-catalyzed oxidative annulation of sydnones with perfluorocarboxylic anhydride for the synthesis of 3-aryl-5-fluoroalkyl-1,3,4-oxadiazol-2(3H)-ones is developed. A diverse array of 3-aryl-5-fluoroalkyl-1,3,4-oxadiazol-2(3H)-ones are prepared with good yields (>73 examples, yields up to 95%). The synthetic utility of the developed protocol was demonstrated by gram-scale synthesis, and the synthetic transformation to 1,2,4-triazol-3-one products. A mechanistic study suggests that the reaction proceeds via the extrusion of carbon dioxide to generate the hydrazide intermediate, which then undergoes intramolecular cyclization and oxidation.
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Affiliation(s)
- Jiaqing Lu
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- SINOPEC (Beijing), Research Institute of Chemical Industry Co., Ltd, Beijing 10013, China
| | - Shouxiong Chen
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Minze Wu
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Hongshan Yin
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xi Lin
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Wei Wu
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
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2
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Nicolai J, Fantoni T, Butcher TW, Arlow SI, Ryabukhin SV, Volochnyuk DM, Hartwig JF. Copper-Mediated Cyanodifluoromethylation of (Hetero)aryl Iodides and Activated (Hetero)aryl Bromides with TMSCF 2CN. J Am Chem Soc 2024; 146:15464-15472. [PMID: 38780539 DOI: 10.1021/jacs.4c03618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Molecules bearing fluorine are increasingly prevalent in pharmaceuticals, agrochemicals, and functional materials. The cyanodifluoromethyl group is unique because its size is closer than that of any other substituted difluoromethyl group to the size of the trifluoromethyl group, but its electronic properties are distinct from those of the trifluoromethyl group. In addition, the presence of the cyano group provides synthetic entry to a wide range of substituted difluoromethyl groups. However, the synthesis of cyanodifluoromethyl compounds requires multiple steps, highly reactive reagents (such as DAST, NSFI, or IF5), or specialized starting materials (such as α,α-dichloroacetonitriles or α-mercaptoacetonitriles). Herein, we report a copper-mediated cyanodifluoromethylation of aryl and heteroaryl iodides and activated aryl and heteroaryl bromides with TMSCF2CN. This cyanodifluoromethylation tolerates an array of functional groups, is applicable to late-stage functionalization of complex molecules, yields analogues of FDA-approved pharmaceuticals and fine chemicals, and enables the synthesis of a range of complex molecules bearing a difluoromethylene unit by transformations of the electron-poor CN unit. Calculations of selected steps of the reaction mechanism by Density Functional Theory indicate that the barriers for both the oxidative addition of iodobenzene to [(DMF)CuCF2CN] and the reductive elimination of the fluoroalkyl product from the fluoroalkyl copper intermediate lie in between those of [(DMF)CuCF3] and [(DMF)CuCF2C(O)NMe2].
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Affiliation(s)
- Jeremy Nicolai
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Tommaso Fantoni
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Trevor W Butcher
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Sophie I Arlow
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Serhiy V Ryabukhin
- The Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv 03022, Ukraine
- Enamine Ltd, Kyiv 02094, Ukraine
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv 02000, Ukraine
| | - Dmytro M Volochnyuk
- The Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv 03022, Ukraine
- Enamine Ltd, Kyiv 02094, Ukraine
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv 02000, Ukraine
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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3
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Amii H. Copper-Catalyzed Aromatic Trifluoromethylation and the Related Transformations. CHEM REC 2023; 23:e202300154. [PMID: 37489548 DOI: 10.1002/tcr.202300154] [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: 04/30/2023] [Revised: 06/29/2023] [Indexed: 07/26/2023]
Abstract
Trifluoromethylated aromatic compounds (Ar-CF3 ) are the substances of considerable interest in various industrial fields. The high lipophilicity, strong electron-withdrawing ability, and characteristic size of trifluoromethyl group are key influences in biologically active molecules. Due to these attractive properties, the benzotrifluoride structural motifs have been widely employed in the design of pharmaceuticals, agrochemicals, dyes, liquid crystals, and polymers. Therefore, the development of highly efficient methodologies for aromatic trifluoromethylation is of significant importance for wide fields of science and technology. Recently, a great deal of attention has been paid to catalytic protocols to introduce fluoroalkyl groups into aromatic rings selectively. This personal account highlights the copper-mediated aromatic trifluoromethylation and the related transformations developed by our research group.
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Affiliation(s)
- Hideki Amii
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, 376-8515, Japan
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4
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Seong CM, Roberts CC. Redox-Neutral Decarboxylative and Desulfonylative C(sp 3) Trifluoromethylation: Method Development and Mechanistic Inquiry. J Org Chem 2023. [PMID: 37467365 DOI: 10.1021/acs.joc.3c00872] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Sodium triflinate (CF3SO2Na) is an inexpensive bench-stable radical CF3 source that is often activated by external oxidants such as peroxides. However, despite the commercial accessibility of CF3SO2Na, the salt has never been applied to decarboxylative trifluoromethylation due to challenges in controlled cross-radical coupling. We report a redox-neutral approach to decarboxylative C(sp3) trifluoromethylation of carboxylic acid derivatives. Mechanistic inquiry is performed to address the limitations in scope.
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Affiliation(s)
- Chris M Seong
- University of Minnesota, Department of Chemistry, Minneapolis, Minnesota 55455, United States
| | - Courtney C Roberts
- University of Minnesota, Department of Chemistry, Minneapolis, Minnesota 55455, United States
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5
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Yao T, Zhu S, Qin X. Manganese-Catalyzed Synthesis of 4-CF3-2-phosphinoylquinolines via Radical 6-endo-trig Cyclization of 1-Isocyano-2-(1-(trifluoromethyl)ethenyl)benzenes. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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6
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Hu XY, Zhu SJ, Meng XH, Yu HF, Liu X, Zhang LY, Wei Y, Lei CW, Wei X, Zhou Y. Structural Elucidation and Total Synthesis for the Pair of Unprecedented Polypyridines with Anti-AChE and HIV-1 Protease Activities from Alangium chinense. J Org Chem 2022; 87:16047-16053. [PMID: 36354352 DOI: 10.1021/acs.joc.2c02180] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Unlike reported pyridine hybrids, 2S (1a) and 2R-alanginenmine A (1b) from Alangium chinense featuring an unprecedented piperidine-bridged polypyridine skeleton represented a pair of alkaloid subtypes with a unique multiple pyridine scaffold. Enlightened by the rare structural characteristics and possible biosynthetic pathway, (±)-alanginenmine A (1) have been achieved in ideal yield by gram-class total synthesis with four steps. In addition, both compounds 1a and 1b exhibited anti-acetylcholinesterase (AChE) and HIV-1 protease activities in the biological activity evaluation. Further, molecular docking was investigated for the mechanism of action between the isolated compounds and HIV-1 protease. The stronger Coulomb interactions and van der Waals interaction, as well as the hydrogen bond interactions of 1a, might be the main cause for its better anti-HIV-1 protease activity than 1b. This work provided a comprehensive research including natural product discovery, bioactivity evaluation, and total synthesis for the new type of leading anti-HIV-1 protease.
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Affiliation(s)
- Xin-Yue Hu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Shi-Jie Zhu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Xiu-Hua Meng
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Hao-Fei Yu
- School of Pharmaceutical Sciences, Kunming Medical University, Kunming 650500, China
| | - Xia Liu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China.,School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Li-Yan Zhang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Ying Wei
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Chuan-Wen Lei
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Xin Wei
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Ying Zhou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
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7
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Niu Y, Cao CK, Ge C, Qu H, Chen C. The Pd-catalyzed synthesis of difluoroethyl and difluorovinyl compounds with a chlorodifluoroethyl iodonium salt (CDFI). CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Zhang C. Synthesis of trifluoromethyl or trifluoroacetyl substituted heterocyclic compounds from trifluoromethyl‐α,β‐ynones. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202100544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Cai Zhang
- Department of Safety Supervision and Management Chongqing Vocational Institute of Safety Technology Chongqing People's Republic of China
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9
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Britton R, Gouverneur V, Lin JH, Meanwell M, Ni C, Pupo G, Xiao JC, Hu J. Contemporary synthetic strategies in organofluorine chemistry. ACTA ACUST UNITED AC 2021. [DOI: 10.1038/s43586-021-00042-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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10
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Schneider T, Fleischmann M, Hergesell D, Majstorović N, Maas G. A Convenient Synthesis of 4‐CF
3
‐Quinolines from 1‐Trifluoromethyl‐prop‐2‐yne 1‐Iminium Salts and Arylamines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Thomas Schneider
- Institute of Organic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Maximilian Fleischmann
- Institute of Organic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Daniel Hergesell
- Institute of Organic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Nicola Majstorović
- Institute of Organic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Gerhard Maas
- Institute of Organic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
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11
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Chen H, Wen S, Cui Y, Lin L, Zhang H, Fang Z, You Y, Weng Z. A method for synthesis of polysubstituted 4-difluoromethyl and perfluoroalkyl pyrazoles. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Kumon T, Yamada S, Agou T, Fukumoto H, Kubota T, Hammond GB, Konno T. Practical Synthesis of α-Trifluoromethylated Pyridines Based on Regioselective Cobalt-Catalyzed [2+2+2] Cycloaddition using Trifluoromethylated Diynes with Nitriles. Adv Synth Catal 2021; 363:1912-1922. [PMID: 34305500 PMCID: PMC8298017 DOI: 10.1002/adsc.202001433] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Indexed: 11/09/2022]
Abstract
Regioselective cobalt-catalyzed [2+2+2] cycloaddition using fluorine-containing diynes with nitriles was described. Cycloaddition of fluorinated diynes with nitriles under the influence of CoCl2(phen), zinc bromide, and zinc dust in dichloroethane at 80°C for 3 h took place smoothly, exclusively affording the corresponding α-fluoroalkylated pyridines in excellent yields. In addition, dinitriles as substrate were also found to be suitable for this reaction, giving the corresponding fluoroalkylated bipyridine derivatives in excellent yields.
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Affiliation(s)
- Tatsuya Kumon
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Tomohiro Agou
- Department of Materials Science, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan
| | - Hiroki Fukumoto
- Department of Materials Science, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan
| | - Toshio Kubota
- Department of Materials Science, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky, 40292, USA
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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13
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Bondarenko OB, Karetnikov GL, Komarov AI, Pavlov AI, Nikolaeva SN. R 4NHal/NOHSO 4: A Usable System for Halogenation of Isoxazoles, Pyrazoles, and Beyond. J Org Chem 2021; 86:322-332. [PMID: 33347755 DOI: 10.1021/acs.joc.0c02106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new convenient and versatile halogenating system (R4NHal/NOHSO4), giving straightforward and general access to halogenated 3,5-diaryl- and alkylarylisoxazoles, pyrazoles and electron-rich benzenes from the corresponding scaffolds, is suggested. The method provides excellent regioselectivity, scalability to the gram scale, and a broad scope for both aromatics and halogens. A three-step, one-pot reaction protocol was developed, and a series of 3,5-diaryl-4-haloisoxazoles has been efficiently synthesized from 1,2-diarylcyclopropanes under suggested nitrosating-halogenating conditions.
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Affiliation(s)
- Oksana B Bondarenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Georgy L Karetnikov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Arseniy I Komarov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Aleksandr I Pavlov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Svetlana N Nikolaeva
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
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14
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine
- Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
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15
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Wu L, Song Y, Li Z, Guo J, Yao X. Copper(II)‐Catalysed Aerobic Oxidative Coupling of Arylamines with Hexafluoroisopropanol: An Alternative Methodology for Constructing Fluorinated Compounds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Liangying Wu
- Department of Applied Chemistry, College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, People's Republic of China
| | - Yang Song
- Department of Applied Chemistry, College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, People's Republic of China
| | - Zhanchong Li
- Department of Applied Chemistry, College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, People's Republic of China
| | - Jiabao Guo
- Department of Applied Chemistry, College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, People's Republic of China
| | - Xiaoquan Yao
- Department of Applied Chemistry, College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, People's Republic of China
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16
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Blom AEM, Su JY, Repka LM, Reisman SE, Dougherty DA. Synthesis and Biological Evaluation of Pyrroloindolines as Positive Allosteric Modulators of the α1β2γ2 GABA A Receptor. ACS Med Chem Lett 2020; 11:2204-2211. [PMID: 33214830 DOI: 10.1021/acsmedchemlett.0c00340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/15/2020] [Indexed: 12/21/2022] Open
Abstract
γ-Aminobutyric acid type A (GABAA) receptors are key mediators of central inhibitory neurotransmission and have been implicated in several disorders of the central nervous system. Some positive allosteric modulators (PAMs) of this receptor provide great therapeutic benefits to patients. However, adverse effects remain a challenge. Selective targeting of GABAA receptors could mitigate this problem. Here, we describe the synthesis and functional evaluation of a novel series of pyrroloindolines that display significant modulation of the GABAA receptor, acting as PAMs. We found that halogen incorporation at the C5 position greatly increased the PAM potency relative to the parent ligand, while substitutions at other positions generally decreased potency. Mutagenesis studies suggest that the binding site lies at the top of the transmembrane domain.
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Affiliation(s)
- Annet E M Blom
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Justin Y Su
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Lindsay M Repka
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Sarah E Reisman
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Dennis A Dougherty
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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17
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Gyorfi N, Farkas E, Nemet N, Weber C, Novak Z, Kotschy A. Copper-Catalyzed Trifluoromethylation of Alkoxypyridine Derivatives. Molecules 2020; 25:molecules25204766. [PMID: 33081411 PMCID: PMC7587554 DOI: 10.3390/molecules25204766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/09/2020] [Accepted: 10/13/2020] [Indexed: 11/29/2022] Open
Abstract
The trifluoromethylation of aromatic and heteroaromatic cores has attracted considerable interest in recent years due to its pharmacological relevance. We studied the extension of a simple copper-catalyzed trifluoromethylation protocol to alkoxy-substituted iodopyridines and their benzologs. The trifluoromethylation proceeded smoothly in all cases, and the desired compounds were isolated and characterized. In the trifluoromethylation of 3-iodo-4-methoxyquinoline, we observed a concomitant O-N methyl migration, resulting in the trifluoromethylated quinolone as a product. Overall, the described procedure should facilitate the broader use of copper-catalyzed trifluoromethylation in medicinal chemistry.
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Affiliation(s)
- Nandor Gyorfi
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7., H-1031 Budapest, Hungary; (N.G.); (E.F.); (N.N.); (C.W.)
| | - Emese Farkas
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7., H-1031 Budapest, Hungary; (N.G.); (E.F.); (N.N.); (C.W.)
| | - Norbert Nemet
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7., H-1031 Budapest, Hungary; (N.G.); (E.F.); (N.N.); (C.W.)
| | - Csaba Weber
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7., H-1031 Budapest, Hungary; (N.G.); (E.F.); (N.N.); (C.W.)
| | - Zoltan Novak
- Institute of Chemistry, Eötvös Loránd Unversity, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary;
| | - Andras Kotschy
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7., H-1031 Budapest, Hungary; (N.G.); (E.F.); (N.N.); (C.W.)
- Correspondence: ; Tel.: +36-1-881-2000
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18
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Fang Z, Yin H, Lin L, Wen S, Xie L, Huang Y, Weng Z. Collaborative Activation of Trifluoroacetyl Diazoester by a Lewis Acid and Base for the Synthesis of Polysubstituted 4-Trifluoromethylpyrazoles. J Org Chem 2020; 85:8714-8722. [DOI: 10.1021/acs.joc.0c00737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zheng Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Hongshan Yin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lu Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Shunli Wen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lili Xie
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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19
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Bentzinger G, Pair E, Guillon J, Marchivie M, Mullié C, Agnamey P, Dassonville-Klimpt A, Sonnet P. Enantiopure substituted pyridines as promising antimalarial drug candidates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Johansen MB, Lindhardt AT. Copper-catalyzed and additive free decarboxylative trifluoromethylation of aromatic and heteroaromatic iodides. Org Biomol Chem 2020; 18:1417-1425. [PMID: 32016267 DOI: 10.1039/c9ob02635e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed decarboxylative trifluoromethylation of (hetero)aromatic iodides has been developed. Importantly, this new copper-catalyzed reaction operates in the absence of any ligands and metal additives. The protocol shows good functional group tolerance and is compatible with heteroaromatic systems. The reaction proved scalable to a 15 mmol scale with increased yield. Finally, late-stage installation of the trifluoromethyl functionality afforded the N-trifluoroacetamide variant of the antidepressant agent, Prozac, demonstrating the applicability of the developed method.
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Affiliation(s)
- Martin B Johansen
- Department of Engineering, Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Anders T Lindhardt
- Department of Engineering, Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
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21
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Domino K, Johansen MB, Daasbjerg K, Skrydstrup T. Stoichiometric Studies on the Carbonylative Trifluoromethylation of Aryl Pd(II) Complexes using TMSCF3 as the Trifluoromethyl Source. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00849] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Katrine Domino
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Martin B. Johansen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
- Department of Engineering, Aarhus University, Åbogade 42, 8200 Aarhus N, Denmark
| | - Kim Daasbjerg
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
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22
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Pan Y, Li J, Li Z, Huang F, Ma X, Jiao W, Shao H. An efficient and facile strategy for trifluoromethylation and perfluoroalkylation of isoquinolines and heteroarenes. Chem Commun (Camb) 2020; 56:7813-7816. [DOI: 10.1039/d0cc00963f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective and regioselective strategy for trifluoromethylation and perfluoroalkylation of isoquinolines and heteroarenes was developed.
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Affiliation(s)
- Yang Pan
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Jiangtao Li
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Zhefeng Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Feng Huang
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xiaofeng Ma
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Wei Jiao
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Huawu Shao
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
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23
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Yang T, Deng Z, Wang KH, Li P, Huang D, Su Y, Hu Y. Synthesis of Polysubstituted Trifluoromethylpyridines from Trifluoromethyl-α,β -ynones. J Org Chem 2019; 85:924-933. [PMID: 31833770 DOI: 10.1021/acs.joc.9b02873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel and efficient method for synthesis of polysubstituted trifluoromethylpyridine derivatives by the Bohlmann-Rahtz heteroannulation reaction is described, which use trifluoromethyl-α,β-ynones as trifluoromethyl building blocks to react with β-enamino esters or β-enamino ketones in the presence of ZnBr2 to form the trifluoromethylpyridine derivatives in good yields. The protocol has the advantages of readily available starting materials, mild reaction conditions, and high atom economy.
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Affiliation(s)
- Tianyu Yang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Zhoubin Deng
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Pengfei Li
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P. R. China
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24
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Ligand-free trifluoromethylation of iodoarenes by use of 2-Aryl-2-trifluoromethylbenzimidazoline as new trifluoromethylating reagent. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2018.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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Ferguson DM, Bour JR, Canty AJ, Kampf JW, Sanford MS. Aryl–CF3 Coupling from Phosphinoferrocene-Ligated Palladium(II) Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00828] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Devin M. Ferguson
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - James R. Bour
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Allan J. Canty
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Jeff W. Kampf
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie S. Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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26
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Lu J, Man Y, Zhang Y, Lin B, Lin Q, Weng Z. Copper-catalyzed chemoselective synthesis of 4-trifluoromethyl pyrazoles. RSC Adv 2019; 9:30952-30956. [PMID: 35529353 PMCID: PMC9072218 DOI: 10.1039/c9ra07694h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/24/2019] [Indexed: 11/21/2022] Open
Abstract
A series of 4-trifluoromethyl pyrazoles have been prepared via the copper-catalyzed cycloaddition of 2-bromo-3,3,3-trifluoropropene with a variety of N-arylsydnone derivatives under mild conditions. This new protocol under optimized reaction conditions [Cu(OTf)2/phen, DBU, CH3CN, 35 °C] afforded 4-trifluoromethyl pyrazoles in moderate to excellent yields with excellent regioselectivity. A copper-catalyzed chemoselective synthesis of 4-trifluoromethyl pyrazoles via cycloaddition of 2-bromo-3,3,3-trifluoropropene with N-arylsydnones has been developed.![]()
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Affiliation(s)
- Jiaqing Lu
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Yuning Man
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Yabin Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Bo Lin
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Qi Lin
- Ocean College
- Minjiang University
- Fuzhou
- China
| | - Zhiqiang Weng
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
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27
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Hulpia F, Noppen S, Schols D, Andrei G, Snoeck R, Liekens S, Vervaeke P, Van Calenbergh S. Synthesis of a 3'-C-ethynyl-β-d-ribofuranose purine nucleoside library: Discovery of C7-deazapurine analogs as potent antiproliferative nucleosides. Eur J Med Chem 2018; 157:248-267. [PMID: 30098481 PMCID: PMC7111280 DOI: 10.1016/j.ejmech.2018.07.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 12/15/2022]
Abstract
A focused nucleoside library was constructed around a 3'-C-ethynyl-d-ribofuranose sugar scaffold, which was coupled to variously modified purine nucleobases. The resulting nucleosides were probed for their ability to inhibit tumor cell proliferation, as well as for their activity against a panel of relevant human viruses. While C6-aryl substituted purine nucleosides were found to be weakly active, several C7-substituted 7-deazapurine nucleosides elicited potent antiproliferative activity. Their activity spectrum was evaluated in the NCI-60 tumor cell line panel indicating activity against several solid tumor derived cell lines. Analog 32, equipped with a 7-deaza 7-chloro-6-amino-purin-9-yl base was evaluated in a metastatic breast tumor (MDA-MB-231-LM2) xenograft model. It inhibited both tumor growth and reduced the formation of lung metastases as revealed by BLI analysis. The dideazanucleoside analog 66 showed interesting activity against hCMV. These results highlight the potential advantages of recombining known sugar and nucleobase motifs as a library design strategy to discover novel antiviral or antitumor agents.
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Affiliation(s)
- Fabian Hulpia
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000, Gent, Belgium
| | - Sam Noppen
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Dominique Schols
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Graciela Andrei
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Robert Snoeck
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Sandra Liekens
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Peter Vervaeke
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000, Gent, Belgium.
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28
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Ono T, Wakiya K, Hossain MJ, Shimakoshi H, Hisaeda Y. Synthesis of Trifluoromethylated B12 Derivative and Photolysis of Cobalt(III)–Trifluoromethyl Bond. CHEM LETT 2018. [DOI: 10.1246/cl.180355] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshikazu Ono
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Fukuoka 819-0395, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kosuke Wakiya
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Md. Jakir Hossain
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Hisashi Shimakoshi
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Yoshio Hisaeda
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Fukuoka 819-0395, Japan
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29
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Pethő B, Vangel D, Csenki JT, Zwillinger M, Novák Z. Palladium catalyzed chloroethoxylation of aromatic and heteroaromatic chlorides: an orthogonal functionalization of a chloroethoxy linker. Org Biomol Chem 2018; 16:4895-4899. [PMID: 29938279 DOI: 10.1039/c8ob01146j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel disconnection based on cross-coupling chemistry was designed to access pharmaceutically relevant aryl-aminoethyl ethers. The developed palladium-catalyzed functionalization of aryl- and heteroaryl chlorides with a sodium tetrakis-(2-chloroethoxy) borate salt is orthogonal to the simple nucleophilic replacement of the chloro function of the ethylene linker. The transformation enables efficient 2-chloroethoxylation in the absence of an additional external base. Subsequent amine substitution of the alkyl halide affords 2-aminoethoxy arenes. The applicability of this method was demonstrated through the synthesis of various aryl- and heteroaryl-alkyl ethers, including the intermediates of marketed drug molecules.
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Affiliation(s)
- Bálint Pethő
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary.
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30
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Mularski J, Czaplińska B, Cieślik W, Bebłot J, Bartczak P, Sitko R, Polański J, Musiol R. Electrolytic copper as cheap and effective catalyst for one-pot triazole synthesis. Sci Rep 2018. [PMID: 29540823 PMCID: PMC5852211 DOI: 10.1038/s41598-018-22703-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Electrolytic copper is a well-known form of pure, oxygen free copper that is used for industrial applications. In this work, the catalytic potential of this relatively cheap material was studied. The addition of less than 0.015 mol equivalent of copper powder effectively catalysed the one-pot synthesis of triazoles from a diverse range of organic halides and alkynes. Quantitative conversions in aqueous solvents can be achieved within minutes. The heterogenous nature of the catalyst afforded a low level of copper contamination in the products, thus meeting the rigorous criteria of the pharmaceutical industry.
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Affiliation(s)
- Jacek Mularski
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Barbara Czaplińska
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Wioleta Cieślik
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Jakub Bebłot
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Piotr Bartczak
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Rafał Sitko
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Jarosław Polański
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland
| | - Robert Musiol
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice, 40-006, Poland.
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31
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Ye Y, Cheung KPS, He L, Tsui GC. Synthesis of 2-(Trifluoromethyl)indoles via Domino Trifluoromethylation/Cyclization of 2-Alkynylanilines. Org Lett 2018; 20:1676-1679. [PMID: 29489379 DOI: 10.1021/acs.orglett.8b00509] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new method for the synthesis of 2-(trifluoromethyl)indoles using easily accessible 2-alkynylanilines and a well-established fluoroform-derived CuCF3 reagent is described. This method utilizes a domino trifluoromethylation/cyclization strategy to construct the indole cores with no ambiguity of the CF3 position. The intriguing 3-formyl-2-(trifluoromethyl)indoles can also be synthesized by this protocol, which are useful intermediates for the preparation of trifluoromethylated drug analogues. The ultimate CF3 source is the inexpensive industrial byproduct fluoroform.
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Affiliation(s)
- Yibin Ye
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR
| | - Kelvin Pak Shing Cheung
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR
| | - Lisi He
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR
| | - Gavin Chit Tsui
- Department of Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR
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32
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Li GB, Zhang C, Song C, Ma YD. Progress in copper-catalyzed trifluoromethylation. Beilstein J Org Chem 2018; 14:155-181. [PMID: 29441139 PMCID: PMC5789444 DOI: 10.3762/bjoc.14.11] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/04/2018] [Indexed: 11/23/2022] Open
Abstract
The introduction of trifluoromethyl groups into organic molecules has attracted great attention in the past five years. In this review, we describe the recent efforts in the development of trifluoromethylation via copper catalysis using nucleophilic, electrophilic or radical trifluoromethylation reagents.
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Affiliation(s)
- Guan-bao Li
- School of Pharmaceutical sciences, Shandong University, 44 West Culture Road, Jinan 250012, PR China
| | - Chao Zhang
- School of Pharmaceutical sciences, Shandong University, 44 West Culture Road, Jinan 250012, PR China
| | - Chun Song
- School of Pharmaceutical sciences, Shandong University, 44 West Culture Road, Jinan 250012, PR China
| | - Yu-dao Ma
- Department of chemistry, Shandong University, 27 Shanda South Road, Jinan 250100, PR China
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33
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Ye Y, Cheung KPS, He L, Tsui GC. Domino cyclization/trifluoromethylation of 2-alkynylanilines using fluoroform-derived CuCF3: synthesis of 3-(trifluoromethyl)indoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00191j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A domino cyclization/trifluoromethylation strategy for the construction of indole cores with concomitant installation of a CF3 group is described.
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Affiliation(s)
- Yibin Ye
- Department of Chemistry
- The Chinese University of Hong Kong
- New Territories
- Hong Kong SAR
| | | | - Lisi He
- Department of Chemistry
- The Chinese University of Hong Kong
- New Territories
- Hong Kong SAR
| | - Gavin Chit Tsui
- Department of Chemistry
- The Chinese University of Hong Kong
- New Territories
- Hong Kong SAR
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34
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Amal Joseph PJ, Priyadarshini S. Copper-Mediated C–X Functionalization of Aryl Halides. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00285] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- P. J. Amal Joseph
- Department
of Chemistry, St. Albert’s College, Ernakulam, Kerala 682018, India
| | - S. Priyadarshini
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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35
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Landmann J, Sprenger JAP, Hennig PT, Bertermann R, Grüne M, Würthner F, Ignat'ev NV, Finze M. Perfluoroalkyltricyanoborate and Perfluoroalkylcyanofluoroborate Anions: Building Blocks for Low-Viscosity Ionic Liquids. Chemistry 2017; 24:608-623. [PMID: 28884848 DOI: 10.1002/chem.201703685] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Indexed: 12/24/2022]
Abstract
The potassium perfluoroalkyltricyanoborates K[Cn F2 n+1 B(CN)3 ] [n=1 (1 d), 2 (2 d)] and the potassium mono(perfluoroalkyl)cyanofluoroborates K[Cn F2 n+1 BF(CN)2 ] [n=1 (1 c), 2 (2 c)] and [Cn F2 n+1 BF2 (CN)]- [n=1 (1 b), 2 (2 b), 3 (3 b), 4 (4 b)] are accessible with perfect selectivities on multi-gram scales starting from K[Cn F2 n+1 BF3 ] and Me3 SiCN. The K+ salts are starting materials for the preparation of salts with organic cations, for example, [EMIm]+ (EMIm=1-ethyl-3-methylimidazolium). These [EMIm]+ salts are hydrophobic room-temperature ionic liquids (RTILs) that are thermally, chemically and electrochemically very robust, offering electrochemical windows up to 5.8 V. The RTILs described herein, exhibit very low viscosities with a minimum of 14.0 mPa s at 20 °C for [EMIm]1 c, low melting points down to -57 °C for [EMIm]2 b and extraordinary high conductivities up to 17.6 mS cm-1 at 20 °C for [EMIm]1 c. The combination of these properties makes these ILs promising materials for electrochemical devices as exemplified by the application of selected RTILs as component of electrolytes in dye-sensitised solar cells (DSSCs, Grätzel cells). The efficiency of the DSSCs was found to increase with a decreasing viscosity of the neat ionic liquid. In addition to the spectroscopic characterisation, single crystals of the potassium salts of the anions 1 b-d, 2 d, 3 b and 4 c as well as of [nBu4 N]2 c have been studied by X-ray diffraction.
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Affiliation(s)
- Johannes Landmann
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany
| | - Jan A P Sprenger
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany
| | - Philipp T Hennig
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany
| | - Rüdiger Bertermann
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany
| | - Matthias Grüne
- Julius-Maximilians-Universität Würzburg, Institut für Organische Chemie &, Center for Nanosystems Chemistry, Am Hubland, 97074, Würzburg, Germany
| | - Frank Würthner
- Julius-Maximilians-Universität Würzburg, Institut für Organische Chemie &, Center for Nanosystems Chemistry, Am Hubland, 97074, Würzburg, Germany
| | - Nikolai V Ignat'ev
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany.,Merck KGaA, Frankfurter Strasse 250, 64293, Darmstadt, Germany
| | - Maik Finze
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074, Würzburg, Germany
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36
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Wang L, Studer A. 1-Trifluoromethylisoquinolines from α-Benzylated Tosylmethyl Isocyanide Derivatives in a Modular Approach. Org Lett 2017; 19:5701-5704. [DOI: 10.1021/acs.orglett.7b02882] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lin Wang
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraβe 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraβe 40, 48149 Münster, Germany
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37
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Wang Q, He L, Li KK, Tsui GC. Copper-Mediated Domino Cyclization/Trifluoromethylation/Deprotection with TMSCF 3: Synthesis of 4-(Trifluoromethyl)pyrazoles. Org Lett 2017; 19:658-661. [PMID: 28080073 DOI: 10.1021/acs.orglett.6b03822] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-mediated synthesis of 4-(trifluoromethyl)pyrazoles is described. In one step from readily accessible α,β-alkynic tosylhydrazones, a remarkable domino sequence of cyclization, trifluoromethylation, and detosylation takes place to furnish the 4-CF3 N-H pyrazole cores with good functional group compatibility. The reaction conditions are mild and convenient, at room temperature in air, using the commercially available trifluoromethyltrimethylsilane (TMSCF3) as the CF3 source. The method can be applied to the synthesis of a 4-CF3 analogue of the anti-inflammatory drug celecoxib.
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Affiliation(s)
- Quande Wang
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Lisi He
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Kin Keung Li
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
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38
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Hossain MJ, Ono T, Wakiya K, Hisaeda Y. A vitamin B12 derivative catalyzed electrochemical trifluoromethylation and perfluoroalkylation of arenes and heteroarenes in organic media. Chem Commun (Camb) 2017; 53:10878-10881. [DOI: 10.1039/c7cc06221d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The electrochemical trifluoromethylation and perfluoroalkylation of aromatic compounds mediated by a vitamin B12 derivative as a cobalt-based catalyst has been developed.
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Affiliation(s)
- Md. Jakir Hossain
- Department of Chemistry and Biochemistry
- Graduate School of Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Toshikazu Ono
- Department of Chemistry and Biochemistry
- Graduate School of Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Kosuke Wakiya
- Department of Chemistry and Biochemistry
- Graduate School of Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Yoshio Hisaeda
- Department of Chemistry and Biochemistry
- Graduate School of Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
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39
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Zelenay B, Frutos‐Pedreño R, Markalain‐Barta J, Vega‐Isa E, White AJP, Díez‐González S. Homo‐ and Heteroleptic Copper(I) Complexes with Diazabutadiene Ligands: Synthesis, Solution‐ and Solid‐State Structural Studies. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600620] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin Zelenay
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
| | - Roberto Frutos‐Pedreño
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
| | - Jordi Markalain‐Barta
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
| | - Esmeralda Vega‐Isa
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
| | - Andrew J. P. White
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
| | - Silvia Díez‐González
- Department of ChemistryImperial College LondonExhibition RoadSW7 2AZSouth Kensington, LondonUK
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40
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Negishi K, Aikawa K, Mikami K. Cyclic-Protected Hexafluoroacetone as an Air-Stable Liquid Reagent for Trifluoromethylations. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600711] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kazuyuki Negishi
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; O-okayama, Meguro-ku 152-8552 Tokyo Japan
| | - Kohsuke Aikawa
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; O-okayama, Meguro-ku 152-8552 Tokyo Japan
| | - Koichi Mikami
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; O-okayama, Meguro-ku 152-8552 Tokyo Japan
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41
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Cu(I)/Ag(I)-mediated decarboxylative trifluoromethylation of arylpropiolic acids with Me 3 SiCF 3 at room temperature. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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42
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43
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Natte K, Jagadeesh RV, He L, Rabeah J, Chen J, Taeschler C, Ellinger S, Zaragoza F, Neumann H, Brückner A, Beller M. Palladium-Catalyzed Trifluoromethylation of (Hetero)Arenes with CF3
Br. Angew Chem Int Ed Engl 2016; 55:2782-6. [DOI: 10.1002/anie.201511131] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Kishore Natte
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Rajenahally V. Jagadeesh
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Lin He
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Jianbin Chen
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | | | | | | | - Helfried Neumann
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Angelika Brückner
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
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44
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Natte K, Jagadeesh RV, He L, Rabeah J, Chen J, Taeschler C, Ellinger S, Zaragoza F, Neumann H, Brückner A, Beller M. Palladium-Catalyzed Trifluoromethylation of (Hetero)Arenes with CF3
Br. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511131] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Kishore Natte
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Rajenahally V. Jagadeesh
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Lin He
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Jianbin Chen
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | | | | | | | - Helfried Neumann
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Angelika Brückner
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
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45
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Lin X, Hou C, Li H, Weng Z. Decarboxylative Trifluoromethylating Reagent [Cu(O 2 CCF 3 )(phen)] and Difluorocarbene Precursor [Cu(phen) 2 ][O 2 CCF 2 Cl]. Chemistry 2016; 22:2075-2084. [PMID: 26756573 DOI: 10.1002/chem.201504306] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 11/08/2022]
Abstract
This article describes the new economic decarboxylative trifluoromethylating reagent [Cu(phen)(O2 CCF3 )] (1; phen=1,10-phenanthroline) and the efficient difluorocarbene precursor [Cu(phen)2 ][O2 CCF2 Cl] (2). Treatment of copper tert-butoxide with phen and subsequent addition of trifluoroacetic acid or chlorodifluoroacetic acid afforded air-stable complexes 1 and 2, respectively, which were characterized by X-ray crystallography. The copper(I) ion in 1 is coordinated by a bidentate phen ligand, a monodentate trifluoroacetate group, and a molecule of CH3 CN in a distorted tetrahedral coordination geometry. The molecular structure of 2 adopts an ionic form that consists of a [Cu(phen)2 ]+ cation and a chlorodifluoroacetate anion. Complex 1 reacted with a variety of aryl and heteroaryl halides to form trifluoromethyl (hetero)arenes in good yields. The corresponding Hammett plot exhibited a linear relationship and a reaction parameter (ρ)=+0.56±0.02, which indicated that the trifluoromethylation reaction proceeded via a nucleophilic reactive species. Complex 2 reacts with phenols to produce aryl difluoromethyl ethers in modest-to-excellent yields. Mechanistic investigations revealed that the difluoromethylation reaction proceeds by initial copper-mediated formation of difluorocarbene and subsequent concerted addition of difluorocarbene to the phenol to form a three-center transition state.
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Affiliation(s)
- Xiaoxi Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Chuanqi Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Haohong Li
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
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46
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Wang X, Li Y, Guo Y, Zhu Z, Wu Y, Cao W. Direct isoperfluoropropylation of arenediazonium salts with hexafluoropropylene. Org Chem Front 2016. [DOI: 10.1039/c5qo00388a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Perfluoropropylene can be used directly for isoperfluoropropylation of arenediazonium salts in the presence of silver fluoride and cuprous iodide. A practical tandem diazotization and isoperfluoropropylation protocol was developed for aniline derivatives to generate isoperfluoropropylarenes with good functional-group compatibility.
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Affiliation(s)
- Xiaojun Wang
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- Key Laboratory of Organofluorine Chemistry
| | - Yajun Li
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Yuwei Guo
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- Key Laboratory of Organofluorine Chemistry
| | - Zhentong Zhu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Yongming Wu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Weiguo Cao
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- Key Laboratory of Organofluorine Chemistry
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47
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Zhang SL, Bie WF. Isolation and characterization of copper(iii) trifluoromethyl complexes and reactivity studies of aerobic trifluoromethylation of arylboronic acids. RSC Adv 2016. [DOI: 10.1039/c6ra10302b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel phenCuIII–CF3 complexes, isolated purely and fully characterized, are highly reactive for aerobic trifluoromethylation of arylboronic acids.
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Affiliation(s)
- Song-Lin Zhang
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Wen-Feng Bie
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
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48
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Lin X, Li Z, Han X, Weng Z. Trifluoromethylation of (hetero)aryl iodides and bromides with copper(i) chlorodifluoroacetate complexes. RSC Adv 2016. [DOI: 10.1039/c6ra15547b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new copper-mediated trifluoromethylation of aryl halides using copper(i) chlorodifluoroacetate complexes as reagent has been developed.
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Affiliation(s)
- Xiaoxi Lin
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Zhengyu Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Xiaoyan Han
- Testing and Analysis Center
- Soochow University
- Suzhou 215123
- China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
- State Key Laboratory of Structural Chemistry
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49
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Pandey VK, Anbarasan P. Copper-catalysed synthesis of trifluoromethyl(hetero)arenes from di(hetero)aryl-λ3-iodanes. RSC Adv 2016. [DOI: 10.1039/c5ra27128b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Efficient regioselective copper-catalyzed trifluoromethylation of symmetrical and unsymmetrical diaryl-λ3-iodanes have been achieved for the synthesis of trifluoromethyl(hetero)arenes in good yield.
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Affiliation(s)
- Vinay Kumar Pandey
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
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50
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Yang JY, Xu XH, Qing FL. Copper-mediated trifluoromethylation of diaryliodonium salts with TMSCF3 at room temperature. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.09.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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