1
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Sumii Y, Shibata N. Current State of Microflow Trifluoromethylation Reactions. CHEM REC 2023; 23:e202300117. [PMID: 37309300 DOI: 10.1002/tcr.202300117] [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: 04/03/2023] [Revised: 05/25/2023] [Indexed: 06/14/2023]
Abstract
The trifluoromethyl group is a powerful structural motif in drugs and polymers; thus, developing trifluoromethylation reactions is an important area of research in organic chemistry. Over the past few decades, significant progress has been made in developing new methods for the trifluoromethylation of organic molecules, ranging from nucleophilic and electrophilic approaches to transition-metal catalysis, photocatalysis, and electrolytic reactions. While these reactions were initially developed in batch systems, more recent microflow versions are highly attractive for industrial applications owing to their scalability, safety, and time efficiency. In this review, we discuss the current state of microflow trifluoromethylation. Approaches for microflow trifluoromethylation based on different trifluoromethylation reagents are described, including continuous flow, flow photochemical, microfluidic electrochemical reactions, and large-scale microflow reactions.
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Affiliation(s)
- Yuji Sumii
- Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
| | - Norio Shibata
- Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
- Department of Nanopharmaceutical Sciences, Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
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2
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Ex-situ generation and synthetic utilization of bare trifluoromethyl anion in flow via rapid biphasic mixing. Nat Commun 2023; 14:1231. [PMID: 36869027 PMCID: PMC9984407 DOI: 10.1038/s41467-022-35611-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/13/2022] [Indexed: 03/05/2023] Open
Abstract
Fluoroform (CF3H) is the simplest reagent for nucleophilic trifluoromethylation intermediated by trifluoromethyl anion (CF3-). However, it has been well-known that CF3- should be generated in presence of a stabilizer or reaction partner (in-situ method) due to its short lifetime, which results in the fundamental limitation on its synthetic utilization. We herein report a bare CF3- can be ex-situ generated and directly used for the synthesis of diverse trifluoromethylated compounds in a devised flow dissolver for rapid biphasic mixing of gaseous CF3H and liquid reagents that was designed and structurally optimized by computational fluid dynamics (CFD). In flow, various substrates including multi-functional compounds were chemoselectively reacted with CF3-, extending to the multi-gram-scale synthesis of valuable compounds by 1-hour operation of the integrated flow system.
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3
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Liu B, Chen X, Pei C, Li J, Zou D, Wu Y, Wu Y. Ruthenium-Catalyzed ortho-C–H Hydroxyfluoroalkylation of Arenes with Fluorinated Alcohols. J Org Chem 2022; 87:14364-14373. [DOI: 10.1021/acs.joc.2c01797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Liu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Xiaoyu Chen
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Congcong Pei
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jingya Li
- Tetranov Biopharm, LLC, Zhengzhou 450052, People’s Republic of China
| | - Dapeng Zou
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Yangjie Wu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Yusheng Wu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
- Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, New Jersey 08901, United States
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4
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Kim DS, Yoshizawa K, Mitasev B, Schnaderbeck M, Zhang H, Omori M, Kayano A, Nagai M, Wakasugi K, Watanabe Y, Benayoud F, Suzuki Y, Motoki T, Kaneko T, Takaishi M, Ishida T, Takeda K, Kita Y, Yamamoto N, Khan A, Dimopoulos P, Farthing CN, Hall A, Chanda A, Lu L, Bracke M, Fang FG. Synthesis of BACE1 Inhibitors E2609/ E2071 via Oxime–Olefin Cycloaddition Following a Process Risk Mitigation Strategy. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dae-Shik Kim
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Kazuhiro Yoshizawa
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Branko Mitasev
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Matthew Schnaderbeck
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Huiming Zhang
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Masayuki Omori
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Akio Kayano
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Mitsuo Nagai
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Kazunori Wakasugi
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Yuzo Watanabe
- API Research Japan, Pharmaceutical Science & Technology Core Function Units, Medicine Creation Center, Eisai Company, Limited, 22-Sunayama, Kamisu-shi, Ibaraki 314-0255, Japan
| | - Farid Benayoud
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Yuichi Suzuki
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Takafumi Motoki
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Toshihiko Kaneko
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Mamoru Takaishi
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Tasuku Ishida
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Kunitoshi Takeda
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Yoichi Kita
- Neurology Business Group Eisai Tsukuba Research Laboratories, Tokodai, 5-1-3 Tsukuba-shi, Ibaraki 300-2635, Japan
| | - Noboru Yamamoto
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Afzal Khan
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Paschalis Dimopoulos
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Christopher N. Farthing
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Adrian Hall
- Eisai Europe Limited, EMEA Knowledge Centre, Mosquito Way, Hatfield Hertfordshire AL10 9SN, United Kingdom
| | - Arani Chanda
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Lily Lu
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Markus Bracke
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
| | - Francis G. Fang
- Eisai Incorporated, 35 Cambridgepark Drive, Cambridge, Massachusetts 02140, United States
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5
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Kani R, Inuzuka T, Kubota Y, Funabiki K. One-Pot Successive Turbo Grignard Reactions for the Facile Synthesis of α-Aryl-α-Trifluoromethyl Alcohols. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryunosuke Kani
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis; Life Science Research Center; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Yasuhiro Kubota
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
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6
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Hirano K, Yoshioka K, Umezu K, Kagawa T, Sumii Y, Shibata N. One-step Synthesis of 2-Hydroxy-2-(trifluoromethyl)malonates by Trifluoromethylation of 2-Oxomalonates with Ruppert-Prakash Reagent. CHEM LETT 2020. [DOI: 10.1246/cl.190942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kazuki Hirano
- Department of Nanopharmaceutical Sciences, and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Kotaro Yoshioka
- KUMIAI CHEMICAL INDUSTRY CO., LTD, 4-26 Ikenohata 1-chome, Taito-ku, Tokyo 110-8782, Japan
| | - Kazuto Umezu
- KUMIAI CHEMICAL INDUSTRY CO., LTD, 4-26 Ikenohata 1-chome, Taito-ku, Tokyo 110-8782, Japan
| | - Takumi Kagawa
- Tosoh Finechem Corporation, 4988 Kaiseicho, Shunan, Yamaguchi 746-0006, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
- Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, 321004 Jinhua, P. R. China
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7
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Funabiki K, Hayakawa A, Kani R, Inuzuka T, Kubota Y. One-Pot and Reducible-Functional-Group-Tolerant Synthesis of α-Aryl- and α-Heteroaryl-α-Trifluoromethyl Alcohols via Tandem Trifluoroacetylation and MPV Type Reduction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Ayaka Hayakawa
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Ryunosuke Kani
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis; Life Science Research Center; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Yashuhiro Kubota
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
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8
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Xue Q, Bi F, Zhai L, Guo T, Zhang J, Zhang S, Wang B, Zhang J. Synthesis, Characterization and Performance of Promising Energetic Materials Based on 1,3‐Oxazinane. Chempluschem 2019; 84:913-918. [DOI: 10.1002/cplu.201900322] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/13/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Qi Xue
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Fuqiang Bi
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Lianjie Zhai
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Tao Guo
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Jiarong Zhang
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Shengyong Zhang
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
- Department of Medicinal ChemistryFourth Military Medical University Xi'an 710032 P. R. China
| | - Bozhou Wang
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
| | - Junlin Zhang
- Xi'an Modern Chemistry Research Institute Xi'an 710065 P. R. China
- Department of ChemistryTechnische Universität München Garching bei München 85748 Germany
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9
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Hirano K, Gondo S, Punna N, Tokunaga E, Shibata N. Gas/Liquid-Phase Micro-Flow Trifluoromethylation using Fluoroform: Trifluoromethylation of Aldehydes, Ketones, Chalcones, and N-Sulfinylimines. ChemistryOpen 2019; 8:406-410. [PMID: 30976483 PMCID: PMC6442697 DOI: 10.1002/open.201800286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/09/2019] [Indexed: 12/16/2022] Open
Abstract
A micro-flow nucleophilic trifluoromethylation of carbonyl compounds using gaseous fluoroform was developed. This method also allows the first micro-flow transformation of N-sulfinylimines into trifluoromethyl amines with excellent diastereoselectivity. To demonstrate the synthetic utility of this micro-flow synthesis, the formal micro-flow synthesis of Efavirenz is described.
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Affiliation(s)
- Kazuki Hirano
- Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyGokiso, Showa-ku, Nagoya466-8555Japan
| | - Satoshi Gondo
- Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyGokiso, Showa-ku, Nagoya466-8555Japan
| | - Nagender Punna
- Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyGokiso, Showa-ku, Nagoya466-8555Japan
| | - Etsuko Tokunaga
- Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyGokiso, Showa-ku, Nagoya466-8555Japan
| | - Norio Shibata
- Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical SciencesNagoya Institute of TechnologyGokiso, Showa-ku, Nagoya466-8555Japan
- Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal University688 Yingbin Avenue321004 JinhuaChina
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10
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Komoda K, Shimokawa A, Amii H. Solvent-Promoted Catalyst-Free Nucleophilic Fluoroalkylation of Aldehydes. ChemistrySelect 2019. [DOI: 10.1002/slct.201900456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kazuki Komoda
- Division of Molecular Science Faculty of Science and Technology; Gunma University, 1-5-1, Tenjin-cho, Kiryu; Gunma 376-8515 Japan
| | - Ai Shimokawa
- Division of Molecular Science Faculty of Science and Technology; Gunma University, 1-5-1, Tenjin-cho, Kiryu; Gunma 376-8515 Japan
| | - Hideki Amii
- Division of Molecular Science Faculty of Science and Technology; Gunma University, 1-5-1, Tenjin-cho, Kiryu; Gunma 376-8515 Japan
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11
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Johnston C, West TH, Dooley RE, Reid M, Jones AB, King EJ, Leach AG, Lloyd-Jones GC. Anion-Initiated Trifluoromethylation by TMSCF 3: Deconvolution of the Siliconate-Carbanion Dichotomy by Stopped-Flow NMR/IR. J Am Chem Soc 2018; 140:11112-11124. [PMID: 30080973 PMCID: PMC6133236 DOI: 10.1021/jacs.8b06777] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Indexed: 12/25/2022]
Abstract
The mechanism of CF3 transfer from R3SiCF3 (R = Me, Et, iPr) to ketones and aldehydes, initiated by M+X- (<0.004 to 10 mol %), has been investigated by analysis of kinetics (variable-ratio stopped-flow NMR and IR), 13C/2H KIEs, LFER, addition of ligands (18-c-6, crypt-222), and density functional theory calculations. The kinetics, reaction orders, and selectivity vary substantially with reagent (R3SiCF3) and initiator (M+X-). Traces of exogenous inhibitors present in the R3SiCF3 reagents, which vary substantially in proportion and identity between batches and suppliers, also affect the kinetics. Some reactions are complete in milliseconds, others take hours, and others stall before completion. Despite these differences, a general mechanism has been elucidated in which the product alkoxide and CF3- anion act as chain carriers in an anionic chain reaction. Silyl enol ether generation competes with 1,2-addition and involves protonation of CF3- by the α-C-H of the ketone and the OH of the enol. The overarching mechanism for trifluoromethylation by R3SiCF3, in which pentacoordinate siliconate intermediates are unable to directly transfer CF3- as a nucleophile or base, rationalizes why the turnover rate (per M+X- initiator) depends on the initial concentration (but not identity) of X-, the identity (but not concentration) of M+, the identity of the R3SiCF3 reagent, and the carbonyl/R3SiCF3 ratio. It also rationalizes which R3SiCF3 reagent effects the most rapid trifluoromethylation, for a specific M+X- initiator.
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Affiliation(s)
- Craig
P. Johnston
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
| | - Thomas H. West
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
| | - Ruth E. Dooley
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
| | - Marc Reid
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
| | - Ariana B. Jones
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
| | - Edward J. King
- TgK
Scientific Limited, 7
Long’s Yard, St Margaret’s Street, Bradford-on-Avon, BA15 1DH, U.K.
| | - Andrew G. Leach
- School
of Pharmacy and Biomolecular Sciences, Liverpool
John Moores University, Byrom Street, Liverpool, L3 3AF, U.K.
| | - Guy C. Lloyd-Jones
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, U.K.
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12
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Achary R, Mathi GR, Kim S, Hwang JY, Kim P. Grignard-mediated rearrangement of trifluoroacetyl from dihydroisoquinoline enamides to afford tertiary trifluoromethylcarbinols. Org Biomol Chem 2018; 16:1452-1456. [PMID: 29431808 DOI: 10.1039/c7ob03079g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of the trifluoroacetyl enamides of dihydroisoquinolines 2 with diverse Grignard reagents afforded tertiary trifluoromethyl-carbinols 4 by facilitating the addition of tertiary carbinols to the β-carbon of enamides 2. Based on the confirmed formation of vinylogous amides 3, the transformation likely proceeds via unique acyl group rearrangement to the β-carbon of the enamide and subsequent nucleophilic addition of the Grignard reagent. Given the synthetic utility and novelty of this reaction, this work may open new avenues for the synthesis of pharmaceutically important tertiary trifluoromethylcarbinols on cyclic enamide systems.
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Affiliation(s)
- Raghavendra Achary
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea.
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13
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Gan XC, Zhang Q, Jia XS, Yin L. Asymmetric Construction of Fluoroalkyl Tertiary Alcohols through a Three-Component Reaction of (Bpin)2, 1,3-Enynes, and Fluoroalkyl Ketones Catalyzed by a Copper(I) Complex. Org Lett 2018; 20:1070-1073. [DOI: 10.1021/acs.orglett.7b04039] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xu-Cheng Gan
- CAS
Key Laboratory of Synthetic Chemistry of Natural Substances, Centre
for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Qi Zhang
- CAS
Key Laboratory of Synthetic Chemistry of Natural Substances, Centre
for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Department
of Chemistry, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Xue-Shun Jia
- Department
of Chemistry, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Liang Yin
- CAS
Key Laboratory of Synthetic Chemistry of Natural Substances, Centre
for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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14
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Zheng Y, Zhang L, Meggers E. Catalytic Enantioselective Synthesis of Key Propargylic Alcohol Intermediates of the Anti-HIV Drug Efavirenz. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.7b00376] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yu Zheng
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Lilu Zhang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
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15
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Johansen MB, Lindhardt AT. Nucleophilic fluorination facilitated by a CsF–CaF2 packed bed reactor in continuous flow. Chem Commun (Camb) 2018; 54:825-828. [DOI: 10.1039/c7cc09035h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple to prepare, dry and handle packed bed reactor carrying CsF on CaF2, towards nucleophilic fluorinations in continuous flow, is reported.
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Affiliation(s)
- M. B. Johansen
- Department of Engineering
- Center for Carbon Dioxide Activation (CADIAC)
- Interdisciplinary Nanoscience Centre (iNANO)
- Aarhus University
- DK-8200 Aarhus N
| | - A. T. Lindhardt
- Department of Engineering
- Center for Carbon Dioxide Activation (CADIAC)
- Interdisciplinary Nanoscience Centre (iNANO)
- Aarhus University
- DK-8200 Aarhus N
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16
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Zhang C. Recent Developments in Trifluoromethylation or Difluoroalkylation by Use of Difluorinated Phosphonium Salts. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601011] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cai Zhang
- Department of Architecture and Environment; Chongqing Vocational Institute of Safety Technology, Wanzhou District; Chongqing People's Republic of China
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