1
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Semeniuk T, Dudas T, Okeh E, Felesky T, Hamel JD. Photocatalytic Defluorinative α-Aminoalkylation of Allylic Difluorides. J Org Chem 2024; 89:13669-13677. [PMID: 39232656 DOI: 10.1021/acs.joc.4c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
A photocatalytic process was devised to synthesize monofluoroalkenes via defluorinative functionalization of allylic difluorides. N-Alkylanilines are used as precursors to α-aminoalkyl radicals, which undergo regioselective addition to allylic difluorides, and subsequent SET and fluoride elimination produce monofluoroalkenes. C-C bond formation on the aniline is site-selective for the least substituted carbon α to nitrogen.
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Affiliation(s)
- Taylor Semeniuk
- Canadian Centre for Research in Advanced Fluorine Technologies, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
| | - Ty Dudas
- Canadian Centre for Research in Advanced Fluorine Technologies, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
| | - Esther Okeh
- Canadian Centre for Research in Advanced Fluorine Technologies, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
| | - Tanner Felesky
- Canadian Centre for Research in Advanced Fluorine Technologies, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
| | - Jean-Denys Hamel
- Canadian Centre for Research in Advanced Fluorine Technologies, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
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2
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Zhang Y, Zhu T, Lin Y, Wei X, Xie X, Lin R, Zhang Z, Fang W, Zhang JJ, Zhang Y, Hu MY, Cai L, Chen Z. Organo-photoredox catalyzed gem-difluoroallylation of ketone-derived dihydroquinazolinones via C(sp 3)-C bond and C(sp 3)-F bond cleavage. Org Biomol Chem 2024; 22:5561-5568. [PMID: 38916128 DOI: 10.1039/d4ob00671b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
An organo-photoredox catalyzed gem-difluoroallylation of both acyclic and cyclic ketone derivatives with α-trifluoromethyl alkenes has been demonstrated, thus giving access to a diverse set of gem-difluoroalkenes in moderate to high yields. Pro-aromatic dihydroquinazolinones can be either pre-formed or in situ generated for ketone activation. This reaction is characterized by readily available starting materials, mild reaction conditions, and broad substrate scope. The feasibility of this reaction has been highlighted by the late-stage modification of several natural products and drug-like molecules as well as the in vitro antifungal activity.
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Affiliation(s)
- Yue Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Tianshuai Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Yuqian Lin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Xian Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Xinyu Xie
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Ruofan Lin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Zhijie Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Weiwei Fang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Jing-Jing Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Yue Zhang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, Jiangsu, China.
| | - Meng-Yang Hu
- DreamChem (Tianjin) Co., Ltd., No. 4, Haitai Development 2nd Road, Binhai High-tech Zone, Tianjin, 300380, China
| | - Lingchao Cai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Zhen Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
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3
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Lye K, Young RD. A review of frustrated Lewis pair enabled monoselective C-F bond activation. Chem Sci 2024; 15:2712-2724. [PMID: 38404400 PMCID: PMC10882520 DOI: 10.1039/d3sc06485a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/07/2024] [Indexed: 02/27/2024] Open
Abstract
Frustrated Lewis pair (FLP) bond activation chemistry has greatly developed over the last two decades since the seminal report of metal-free reversible hydrogen activation. Recently, FLP systems have been utilized to allow monoselective C-F bond activation (at equivalent sites) in polyfluoroalkanes. The problem of 'over-defluorination' in the functionalization of polyfluoroalkanes (where multiple fluoro-positions are uncontrollably functionalized) has been a long-standing chemical problem in fluorocarbon chemistry for over 80 years. FLP mediated monoselective C-F bond activation is complementary to other solutions developed to address 'over-defluorination' and offers several advantages and unique opportunities. This perspective highlights some of these advantages and opportunities and places the development of FLP mediated C-F bond activation into the context of the wider effort to overcome 'over-defluorination'.
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Affiliation(s)
- Kenneth Lye
- Department of Chemistry, National University of Singapore 117543 Singapore
| | - Rowan D Young
- School of Chemistry and Molecular Biosciences, The University of Queensland St Lucia 4072 Australia
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4
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Ni YQ, Li DJ, Mei Y, Jiang Y, Zhang JL, He KH, Pan F. Base-Mediated α- gem-Difluoroalkenylations of Aldehydes and Ketones. Org Lett 2023; 25:6784-6789. [PMID: 37672351 DOI: 10.1021/acs.orglett.3c02845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Herein, we present a base-mediated nucleophilic substitution reaction of α-trifluoromethylstyrenes with simple silyl enol ethers, enabling the efficient synthesis of carbonyl-substituted gem-difluoroalkenes. The merit of this protocol is exhibited by its mild reaction conditions, broad substrate scope, and scalable preparation. Notably, this method demonstrates its applicability for late-stage functionalization of structurally complex molecules. Moreover, we illustrate that the resulting products can serve as valuable precursors for the synthesis of diverse medicinally relevant compounds.
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Affiliation(s)
- Yu-Qing Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Dong-Jie Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Yan Mei
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Yan Jiang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Jun-Lei Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
| | - Ke-Han He
- School of Science, Xichang University, 1 Xuefu Road, Xichang 615000, People's Republic of China
| | - Fei Pan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, People's Republic of China
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5
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Gupta R, Csókás D, Lye K, Young RD. Experimental and computational insights into the mechanism of FLP mediated selective C-F bond activation. Chem Sci 2023; 14:1291-1300. [PMID: 36756325 PMCID: PMC9891352 DOI: 10.1039/d2sc05632a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/05/2023] [Indexed: 01/15/2023] Open
Abstract
Frustrated Lewis pairs (FLP) comprising of B(C6F5)3 (BCF) and 2,4,6-triphenylpyridine (TPPy), P(o-Tol)3 or tetrahydrothiophene (THT) have been shown to mediate selective C-F activation in both geminal and chemically equivalent distal C-F sites. In comparison to other reported attempts of C-F activation using BCF, these reactions appear surprisingly facile. We investigate this reaction through a combination of experimental and computational chemistry to understand the mechanism of the initial C-F activation event and the origin of the selectivity that prevents subsequent C-F activation in the monoactivated salts. We find that C-F activation likely occurs via a Lewis acid assisted SN1 type pathway as opposed to a concerted FLP pathway (although the use of an FLP is important to elevate the ground state energy), where BCF is sufficiently Lewis acidic to overcome the kinetic barrier for C-F activation in benzotrifluorides. The resultant intermediate salts of the form [ArCF2(LB)][BF(C6F5)3] (LB = Lewis base) are relatively thermodynamically unstable, and an equilibrium operates between the fluorocarbon/FLP and their activation products. As such, the use of a fluoride sequestering reagent such as Me3SiNTf2 is key to the realisation of the forward C-F activation reaction in benzotrifluorides. Selectivity in this reaction can be attributed to both the installation of bulky Lewis bases geminal to residual C-F sites and from electronic re-ordering of kinetic barriers (of C-F sites in products and starting materials) arising from the electron withdrawing nature of the pyridinium, phosphonium and sulfonium groups.
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Affiliation(s)
- Richa Gupta
- Department of Chemistry, National University of Singapore 3 Science Drive 3 117543 Singapore
| | - Dániel Csókás
- Department of Chemistry, National University of Singapore 3 Science Drive 3 117543 Singapore
| | - Kenneth Lye
- Department of Chemistry, National University of Singapore 3 Science Drive 3 117543 Singapore
| | - Rowan D. Young
- Department of Chemistry, National University of Singapore3 Science Drive 3117543Singapore,School of Chemistry and Molecular Biosciences, The University of QueenslandSt Lucia, 4072QueenslandAustralia
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6
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Wang H, Li J, Peng L, Song J, Guo C. Cu-Catalyzed Switchable Asymmetric Defluoroalkylation and [3 + 2] Cycloaddition of Trifluoropropene. Org Lett 2022; 24:7828-7833. [PMID: 36264023 DOI: 10.1021/acs.orglett.2c03175] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chiral fluorinated amino esters and pyrrolidines are privileged scaffolds in synthetic chemistry and exhibit unique biological properties. We report the facile preparation of these compounds through copper-catalyzed switchable defluoroalkylation and [3 + 2] cycloaddition of trifluoropropene in an asymmetric fashion. The choice of solvent and chiral ligand was crucial for the efficient transformation and exquisite chemoselectivity pattern from identical starting materials that rapidly and reliably incorporate gem-difluoroalkene and trifluoromethyl (CF3) motifs to generate a diverse range of enantioenriched fluorinated building blocks in good to excellent yields with high asymmetric induction.
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Affiliation(s)
- Hongyi Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Juan Li
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Lingzi Peng
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Chang Guo
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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7
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Yue F, Liu J, Ma H, Liu Y, Dong J, Wang Q. Light-Mediated Defluorosilylation of α-Trifluoromethyl Arylalkenes through Hydrogen Atom Transfer. Org Lett 2022; 24:4019-4023. [PMID: 35611872 DOI: 10.1021/acs.orglett.2c01448] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a direct, light-mediated defluorosilylation protocol for converting α-trifluoromethyl arylalkenes and alkyl silanes into γ,γ-difluoroallylic compounds via a combination of photoredox catalysis and hydrogen atom transfer. The clean, convenient protocol can be scaled to the gram level, and its mild conditions make it very suitable for late-stage functionalization of complex natural products and drugs.
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Affiliation(s)
- Fuyang Yue
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianhua Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Henan Ma
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
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8
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Gao Y, Qin W, Tian M, Zhao X, Hu X. Defluorinative Alkylation of Trifluoromethyl Alkenes with Soft Carbon Nucleophiles Enabled by a Catalytic Amount of Base. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ya Gao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Wei Qin
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Ming‐Qing Tian
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Xuefei Zhao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Xu‐Hong Hu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
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9
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Lee SH, Ryu HG, Jeon SL, Jeong IH. Efficient route to 1‐aryl‐2,2‐difluoroethenyl(
t
‐butyldimethyl)silanes via cross‐coupling reaction of 2,2‐difluoro‐1‐(
t
‐butyldimethyl)silylethenyl tosylate with arylboronic acids. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Seo Hee Lee
- Department of Chemistry and Medical Chemistry Yonsei University Wonju South Korea
| | - Hyun Gyu Ryu
- Department of Chemistry and Medical Chemistry Yonsei University Wonju South Korea
| | - Sung Lan Jeon
- Department of Chemistry and Medical Chemistry Yonsei University Wonju South Korea
| | - In Howa Jeong
- Department of Chemistry and Medical Chemistry Yonsei University Wonju South Korea
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10
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Kim H, Jung Y, Cho SH. Defluorinative C-C Bond-Forming Reaction of Trifluoromethyl Alkenes with gem-(Diborylalkyl)lithiums. Org Lett 2022; 24:2705-2710. [PMID: 35380841 DOI: 10.1021/acs.orglett.2c00809] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the transition-metal-free defluorinative C-C bond-forming reaction of trifluoromethyl alkenes with gem-(diborylalkyl)lithiums. This synthetic strategy provides access to a variety of 4,4-difluoro homoallylic diboronate esters, which serve as versatile intermediates in the efficient preparation of valuable gem-difluoroalkene derivatives. Further synthetic modifications are conducted to demonstrate the synthetic utility of the obtained 4,4-difluoro homoallylic diboronate esters.
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Affiliation(s)
- Haeun Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Yujin Jung
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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11
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TBAF-initiated vinylation of aldehydes with trimethyl[(Z)-2-(phenylsulfanyl)-1-(trifluoromethyl)vinyl]silane. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.109959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Xiao J, Montgomery J. Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Alkenes. ACS Catal 2022; 12:2463-2471. [PMID: 35992737 PMCID: PMC9390876 DOI: 10.1021/acscatal.1c05801] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl alkenes with aldehydes using a nickel complex of a 6,6'-disubstituted bipyridine ligand with zinc metal as the terminal reductant. The protocol is distinguished by its broad substrate scope, mild conditions, and simple catalytic setup. Reaction outcomes are consistent with the intermediacy of an α-silyloxy(alkyl)nickel intermediate generated by a low-valent nickel catalyst, silyl electrophile, and the aldehyde substrate. Mechanistic findings with cyclopropanecarboxaldehyde provide insights into nature of the reactive intermediates and illustrate fundamental reactivity differences that are governed by subtle changes in ligand and substrate structure.
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Affiliation(s)
| | - John Montgomery
- Corresponding authors: John Montgomery - Department of Chemistry, University of Michigan, 930 N. University Ave. Ann Arbor, MI 48109-1055, USA,
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13
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Zhang H, Liang M, Zhang X, He MK, Yang C, Guo L, Xia W. Electrochemical synthesis of functionalized gem-difluoroalkenes with diverse alkyl sources via a defluorinative alkylation process. Org Chem Front 2022. [DOI: 10.1039/d1qo01460a] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An electrochemical defluorinative alkylation of α-trifluoromethyl alkenes is described. This reaction enables the preparation of functionalized gem-difluoroalkenes with diverse alkyl sources including organohalides, NHP esters, and Katritzky salts.
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Affiliation(s)
- Haoxiang Zhang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Mengze Liang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Xiao Zhang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Meng-Ke He
- Wenzhou University, Wenzhou, Zhejiang 325000, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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14
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Delamare A, Naulet G, Kauffmann B, Guichard G, Compain G. Hexafluoroisobutylation of Enolates Through a Tandem Elimination/Allylic Shift/Hydrofluorination Reaction. Chem Sci 2022; 13:9507-9514. [PMID: 36091907 PMCID: PMC9400614 DOI: 10.1039/d2sc02871a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
The isobutyl side chain is a highly prevalent hydrophobic group in drugs, and it notably constitutes the side chain of leucine. Its replacement by a hexafluorinated version containing two CF3...
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Affiliation(s)
- Aline Delamare
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Guillaume Naulet
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, IECB, UAR 3033 F-33600 Pessac France
| | - Gilles Guichard
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
| | - Guillaume Compain
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB F-33600 Pessac France
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15
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Dong H, Lin Z, Wang C. Nickel-Catalyzed Allylic Defluorinative Cross-Electrophile Coupling with Cycloalkyl Silyl Peroxides as the Alkyl Source. J Org Chem 2021; 87:892-903. [PMID: 34958214 DOI: 10.1021/acs.joc.1c02674] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we demonstrate the first successful application of cycloalkyl silyl peroxides (CSP) as an electrophilic coupling partner in the cross-electrophile coupling reaction. Diverse CSP are efficiently cross-coupled with an array of α-trifluoromethyl alkenes under the catalysis of nickel with the assistance of zinc as the reducing agent. This method allows the use of unstrained CSP as the carbonyl-containing alkyl source in the allylic defluorinative reaction, to access a variety of gem-difluoroalkenes bearing a pendent ketone moiety with high functionality tolerance.
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Affiliation(s)
- Haiyan Dong
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Zhiyang Lin
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Chuan Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, PR China
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16
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Claraz A, Allain C, Masson G. Electroreductive Cross-Coupling of Trifluoromethyl Alkenes and Redox Active Esters for the Synthesis of Gem-Difluoroalkenes. Chemistry 2021; 28:e202103337. [PMID: 34761845 DOI: 10.1002/chem.202103337] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Indexed: 12/23/2022]
Abstract
An electroreductive access to gem-difluoroalkenes has been developed through the decarboxylative/defluorinative coupling of N-hydroxyphtalimides esters and α-trifluoromethyl alkenes. The electrolysis is performed under very simple reaction conditions in an undivided cell using cheap carbon graphite electrodes. This metal-free transformation features broad scope with good to excellent yields. Tertiary, secondary as well as primary alkyl radicals could be easily introduced. α-aminoacids L-aspartic and L-glutamic acid-derived redox active esters were good reactive partners furnishing potentially relevant gem-difluoroalkenes. In addition, it has been demonstrated that our electrosynthetic approach toward the synthesis of gem-difluoroalkenes could use an easily prepared Kratitsky salt as alkyl radical precursor via a deaminative/defluorinative carbofunctionalization of trifluoromethylstyrene.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles, CNRS, UPR2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette cedex, France
| | - Clémence Allain
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190, Gif-sur-Yvette, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS, UPR2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette cedex, France
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17
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Guo Y, Cao Y, Song H, Liu Y, Wang Q. Photoredox relay-catalyzed gem-difluoroallylation of alkyl iodides. Chem Commun (Camb) 2021; 57:9768-9771. [PMID: 34486611 DOI: 10.1039/d1cc04284j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, a new example of relay catalysis, using a combination of Mn2(CO)10 and an iridium-based photocatalyst, is reported. In our relay catalytic reaction, the Mn catalyst and iridium-based photocatalyst catalyze the reaction at different stages in the desired sequence under the same reaction conditions, and do not inhibit each other. This convenient method transforms a broad scope of alkyl iodides into the corresponding gem-difluoroalkenes via C(sp3)-C(sp3) bond construction. The protocol has good functional group tolerance and is suitable for the late-stage modification of multifunctional complex molecules.
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Affiliation(s)
- Yuanqiang Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China.
| | - Yunpeng Cao
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China.
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China.
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China.
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China.
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18
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Zhang C, Lin Z, Zhu Y, Wang C. Chromium-Catalyzed Allylic Defluorinative Ketyl Olefin Coupling. J Am Chem Soc 2021; 143:11602-11610. [PMID: 34291644 DOI: 10.1021/jacs.1c04531] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein we report a chromium-catalyzed allylic defluorinative ketyl olefin coupling between aldehydes and α-trifluoromethyl alkenes, which provides novel and efficient access to diverse gem-difluorohomoallylic alcohols. Remarkably, the high chemoselectivity of this reaction enables the conversion of the formyl moiety in the presence of various easily reducible functionalities including ketone, organohalides, aziridine, sulfone, alkyne, and unactivated alkene. The utility of this method is demonstrated by various simple derivatizations of the attached hydroxyl group of the coupling products. The preliminary mechanistic investigations suggest a reaction pathway with a rate-limiting C-C forming step followed by facile β-fluoro elimination.
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Affiliation(s)
- Chang Zhang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yufei Zhu
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, People's Republic of China
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19
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Cross-coupling reactions of sterically hindered 2,2-difluoro-1-(aryl or silyl)ethenyl tosylates with (E)-arylethenylboronic acids. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Yang RY, Wang H, Xu B. Base promoted gem-difluoroolefination of alkyl triflones. Chem Commun (Camb) 2021; 57:4831-4834. [PMID: 33861249 DOI: 10.1039/d1cc01132d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A new synthesis of gem-difluoroalkenes from readily available alkyl triflones and difluorocarbene precursors such as TMSCF2Br has been reported. The reaction, regardless of electronic effect, gives gem-difluoroalkenes in good to excellent yields. The mechanism may involve deprotonation of triflones, nucleophilic addition, and the elimination of SO2CF3.
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Affiliation(s)
- Ren-Yin Yang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, P. R. China.
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21
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Guo YQ, Wu Y, Wang R, Song H, Liu Y, Wang Q. Photoredox/Hydrogen Atom Transfer Cocatalyzed C–H Difluoroallylation of Amides, Ethers, and Alkyl Aldehydes. Org Lett 2021; 23:2353-2358. [DOI: 10.1021/acs.orglett.1c00546] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan-Qiang Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yifan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Ruiguo Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People’s Republic of China
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22
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Gupta R, Mandal D, Jaiswal AK, Young RD. FLP-Catalyzed Monoselective C–F Functionalization in Polyfluorocarbons at Geminal or Distal Sites. Org Lett 2021; 23:1915-1920. [DOI: 10.1021/acs.orglett.1c00346] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Richa Gupta
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Dipendu Mandal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Amit K. Jaiswal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Rowan D. Young
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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23
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Huang H, Chen J, Jiang Y, Xiao T. One pot synthesis of isocyano-containing, densely functionalised gem-difluoroalkenes from α-trifluoromethyl alkenes, alkyl halides and TosMIC. Org Chem Front 2021. [DOI: 10.1039/d1qo01024g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A base-promoted one-pot, three-component reaction of TosMIC with α-trifluoromethyl alkenes and alkyl halides has been deveolped for the synthesis of isocyano-containing, densely functionalised gem-difluoroalkenes.
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Affiliation(s)
- Hongtai Huang
- Kunming University of Science & Technology, Kunming 650500, Yunnan, Peoples R China
| | - Junyu Chen
- Kunming University of Science & Technology, Kunming 650500, Yunnan, Peoples R China
| | - Yubo Jiang
- Kunming University of Science & Technology, Kunming 650500, Yunnan, Peoples R China
| | - Tiebo Xiao
- Kunming University of Science & Technology, Kunming 650500, Yunnan, Peoples R China
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24
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Tu JL, Yang JW, Xu W, Su M, Liu F. Amidyl radical-mediated aminodifluoroallylation of alkenes via photoredox catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo01208h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A practical and redox-neutral method is developed for the synthesis of gem-difluoroalkene-containing N-heterocycles via photoredox catalysis.
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Affiliation(s)
- Jia-Lin Tu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Jia-Wen Yang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Wei Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Ma Su
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China
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25
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Zhou J, Jiang B, Guo M, Sumii Y, Shibata N. Aryl gem-Difluorovinyl Pinacolboronates: Synthesis and Utility for Suzuki-Miyaura Coupling Reaction. CHEM LETT 2020. [DOI: 10.1246/cl.200621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jun Zhou
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Bingyao Jiang
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Ming Guo
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
- Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua 321004, P. R. China
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26
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Xiang P, He L, Li H, Qi Z, Zhang M, Fu Q, Wei J, Du X, Yi D, Wei S. Organo-photoredox catalyzed defluoroacetalation of α-trifluoromethyl alkenes for synthesis of masked γ,γ-difluoroallylic aldehydes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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27
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Jin Y, Wu J, Lin Z, Lan Y, Wang C. Merger of C–F and C–N Bond Cleavage in Cross-Electrophile Coupling for the Synthesis of gem-Difluoroalkenes. Org Lett 2020; 22:5347-5352. [DOI: 10.1021/acs.orglett.0c01592] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Youxiang Jin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiaoyang Wu
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, P. R. China
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28
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Chen G, Wang L, Liu X, Liu P. Visible‐Light‐Induced Radical Defluoroborylation of Trifluoromethyl Alkenes: An Access to
gem
‐Difluoroallylboranes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000257] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guojun Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Liling Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
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29
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Lin Z, Lan Y, Wang C. Titanocene-Catalyzed Reductive Domino Epoxide Ring Opening/Defluorinative Cross-Coupling Reaction. Org Lett 2020; 22:3509-3514. [DOI: 10.1021/acs.orglett.0c00960] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, P. R. China
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30
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Guo YQ, Wang R, Song H, Liu Y, Wang Q. Visible-Light-Induced Deoxygenation/Defluorination Protocol for Synthesis of γ,γ-Difluoroallylic Ketones. Org Lett 2020; 22:709-713. [PMID: 31909628 DOI: 10.1021/acs.orglett.9b04504] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we describe an efficient, practical photocatalytic deoxygenation/defluorination protocol for the synthesis of γ,γ-difluoroallylic ketones from commercially available aromatic carboxylic acids, triphenylphosphine, and α-trifluoromethyl alkenes. The protocol has good functional group tolerance and a broad substrate scope. Using this method, we accomplished the late-stage functionalization of several bioactive molecules.
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Affiliation(s)
- Yuan-Qiang Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Ruiguo Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071 , People's Republic of China
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31
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Fuchibe K, Takao G, Takahashi H, Ijima S, Ichikawa J. Methylarene-Based PAH Synthesis via Domino Cyclization of 1,1-Difluoro-1-alkenes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Go Takao
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroki Takahashi
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shiori Ijima
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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32
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Murray BJ, Ball ED, Harsanyi A, Sandford G. 2,3,3,3-Tetrafluoropropene (HFO-1234yf) as a CF3
-Building Block: Synthesis of Enol Ethers and Vinyl Sulfides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ben J. Murray
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
| | - Ellis D. Ball
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
| | - Antal Harsanyi
- Medicines Research Centre; GlaxoSmithKline R&D Ltd; Gunnels Wood Road SG1 2NY Stevenage Hertfordshire UK
| | - Graham Sandford
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
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33
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Fan P, Zhang C, Lan Y, Lin Z, Zhang L, Wang C. Photocatalytic hydroacylation of trifluoromethyl alkenes. Chem Commun (Camb) 2019; 55:12691-12694. [PMID: 31588452 DOI: 10.1039/c9cc07285c] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrofunctionalization of trifluoromethyl alkenes is highly challenging, because the nucleophilic addition is oftentimes followed by β-F elimination in this case. By the use of tetrabutylammonium decatungstate (TBADT) as a hydrogen-atom-transfer (HAT) photocatalyst for acyl C-H activation, we successfully avoid the β-F elimination in the hydroacylation of trifluoromethyl alkenes with aldehydes. This light (390 nm) promoted reaction provides a facile and efficient access to various β-CF3 ketones in complete regiocontrol with high functionality tolerance and 100% atom economy.
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Affiliation(s)
- Pei Fan
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
| | - Chang Zhang
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
| | - Yun Lan
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
| | - Zhiyang Lin
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
| | - Linchuan Zhang
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
| | - Chuan Wang
- National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China.
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34
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Lin Z, Lan Y, Wang C. Reductive Allylic Defluorinative Cross-Coupling Enabled by Ni/Ti Cooperative Catalysis. Org Lett 2019; 21:8316-8322. [DOI: 10.1021/acs.orglett.9b03102] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
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35
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Blahun OP, Redka MO, Voitenko ZV, Kysil AI, Dobrydnev AV, Grygorenko OO. 2,2-Difluorovinyl Pinacolborane - A New Versatile Reagent for the Suzuki-Miyaura Reaction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oleksandr P. Blahun
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Mykhailo O. Redka
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Zoia V. Voitenko
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Andrii I. Kysil
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Alexey V. Dobrydnev
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
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36
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Song S, Liu H, Wang L, Zhu C, Loh T, Feng C. Rhodium‐Catalyzed Defluorinative Vinylation of
gem
‐Difluoroalkenes for the Synthesis of 2‐Fluoro‐1,3‐dienes. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900197] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shengjin Song
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing Jiangsu 211816 China
| | - Huan Liu
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Lu Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing Jiangsu 211816 China
| | - Chuan Zhu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing Jiangsu 211816 China
| | - Teck‐Peng Loh
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical SciencesNanyang Technological University, 637371 Singapore
| | - Chao Feng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing Jiangsu 211816 China
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37
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Ding D, Lan Y, Lin Z, Wang C. Synthesis of gem-Difluoroalkenes by Merging Ni-Catalyzed C–F and C–C Bond Activation in Cross-Electrophile Coupling. Org Lett 2019; 21:2723-2730. [DOI: 10.1021/acs.orglett.9b00692] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Decai Ding
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China
| | - Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 20237, P. R. China
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38
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Zeng H, Zhu C, Jiang H. Single C(sp3)–F Bond Activation in a CF3 Group: Ipso-Defluorooxylation of (Trifluoromethyl)alkenes with Oximes. Org Lett 2019; 21:1130-1133. [DOI: 10.1021/acs.orglett.9b00074] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
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39
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Tian F, Yan G, Yu J. Recent advances in the synthesis and applications of α-(trifluoromethyl)styrenes in organic synthesis. Chem Commun (Camb) 2019; 55:13486-13505. [DOI: 10.1039/c9cc06465f] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
α-Trifluoromethylstyrene derivatives are versatile synthetic intermediates for the preparation of more complex fluorinated compounds.
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Affiliation(s)
- Feitao Tian
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
| | - Guobing Yan
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
| | - Jian Yu
- Department of Chemistry
- Lishui University
- Lishui City
- P. R. China
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40
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Lin Z, Lan Y, Wang C. Synthesis of gem-Difluoroalkenes via Nickel-Catalyzed Reductive C–F and C–O Bond Cleavage. ACS Catal 2018. [DOI: 10.1021/acscatal.8b04348] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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41
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Fuchibe K, Oki R, Hatta H, Ichikawa J. Single C−F Bond Activation of the CF
3
Group with a Lewis Acid: CF
3
‐Cyclopropanes as Versatile 4,4‐Difluorohomoallylating Agents. Chemistry 2018; 24:17932-17935. [DOI: 10.1002/chem.201805054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Rie Oki
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Hibiki Hatta
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
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42
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Lan Y, Yang F, Wang C. Synthesis of gem-Difluoroalkenes via Nickel-Catalyzed Allylic Defluorinative Reductive Cross-Coupling. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02784] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yun Lan
- Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feiyan Yang
- Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Department of Chemistry, Center for Excellence in Molecular Synthesis, Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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43
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Mandal D, Gupta R, Young RD. Selective Monodefluorination and Wittig Functionalization of gem-Difluoromethyl Groups to Generate Monofluoroalkenes. J Am Chem Soc 2018; 140:10682-10686. [PMID: 30119600 DOI: 10.1021/jacs.8b06770] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Monodefluorination of gem-difluoromethyl groups is achieved using a frustrated Lewis pair (FLP) approach. Triarylphosphines and group 13 Lewis acids were surveyed as FLP components, with the combination of P( o-Tol)3 and B(C6F5)3 found to provide the best results, although the reaction is feasible with more economical components (PPh3 and BF3·OEt2). The α-fluoroalkylphosphonium products arising from the reaction were of lower activity, in regard to further fluoride abstraction, as compared to difluoride starting materials, leading to highly selective monodefluorination. The activated substrates were subject to Wittig reaction protocols to generate a variety of monofluoroalkenes in moderate to high yields.
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Affiliation(s)
- Dipendu Mandal
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Richa Gupta
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Rowan D Young
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
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44
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Jaroschik F. Picking One out of Three: Selective Single C-F Activation in Trifluoromethyl Groups. Chemistry 2018; 24:14572-14582. [PMID: 29923644 DOI: 10.1002/chem.201801702] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/03/2018] [Indexed: 01/01/2023]
Abstract
The introduction of a trifluoromethyl (CF3 ) group into an organic molecule can modify its chemical behavior and lead to changes in its physicochemical and pharmacological properties. The CF3 group is often chosen for its chemical inertness and stability, which are related to the strong C-F bonds. In recent years, the potential of gaining straightforward access to difluorinated compounds through selective single C-F activation in CF3 groups has been unveiled. This review describes the latest methodologies for the synthesis of difluoromethylated arenes, difluoroalkenes and difluorinated aldol products of potential synthetic and/or biological interest, employing low-valent metals, transition metal catalysis, FLP and Lewis acid mediated transformations as well as photoredox catalysis.
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Affiliation(s)
- Florian Jaroschik
- Institut Charles Gerhardt Montpellier UMR 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 240 avenue du Prof Jeanbrau, 34080, Montpellier, France
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45
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Wang M, Pu X, Zhao Y, Wang P, Li Z, Zhu C, Shi Z. Enantioselective Copper-Catalyzed Defluoroalkylation Using Arylboronate-Activated Alkyl Grignard Reagents. J Am Chem Soc 2018; 140:9061-9065. [DOI: 10.1021/jacs.8b04902] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xinghui Pu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yunfei Zhao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Panpan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zexian Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Chendan Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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46
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Hsieh MT, Lee KH, Kuo SC, Lin HC. Lewis acid-mediated defluorinative [3+2] cycloaddition/aromatization cascade of 2,2-difluoroethanol systems with nitriles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701581] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min-Tsang Hsieh
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
- Chinese Medicinal Research and Development Center; China Medical University Hospital; Taiwan, R.O.C
- Natural Products Research Laboratories; UNC Eshelman School of Pharmacy; University of North Carolina; Chapel Hill, NC 27599 United States
| | - Kuo-Hsiung Lee
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
- Chinese Medicinal Research and Development Center; China Medical University Hospital; Taiwan, R.O.C
| | - Sheng-Chu Kuo
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
| | - Hui-Chang Lin
- School of Pharmacy; China Medical University; Taichung 404 Taiwan, R.O.C
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47
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Abstract
A closer look is given to the successful approaches to the C(sp3)–F activation of benzylic, allylic, propargylic and allenylic fluorides.
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48
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Sakaguchi H, Ohashi M, Ogoshi S. Fluorinated Vinylsilanes from the Copper-Catalyzed Defluorosilylation of Fluoroalkene Feedstocks. Angew Chem Int Ed Engl 2017; 57:328-332. [DOI: 10.1002/anie.201710866] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/09/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Hironobu Sakaguchi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Masato Ohashi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
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49
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Sakaguchi H, Ohashi M, Ogoshi S. Fluorinated Vinylsilanes from the Copper-Catalyzed Defluorosilylation of Fluoroalkene Feedstocks. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710866] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hironobu Sakaguchi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Masato Ohashi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
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50
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Takayama R, Yamada A, Fuchibe K, Ichikawa J. Synthesis of Sulfanylated Difluoroalkenes: Electrophilic Difluoromethylidenation of Dithioesters with Difluorocarbene. Org Lett 2017; 19:5050-5053. [DOI: 10.1021/acs.orglett.7b02222] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryo Takayama
- Division of Chemistry, Faculty
of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305−8571, Japan
| | - Atsushi Yamada
- Division of Chemistry, Faculty
of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305−8571, Japan
| | - Kohei Fuchibe
- Division of Chemistry, Faculty
of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305−8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty
of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305−8571, Japan
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