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Zhang G, Wang L, Cui L, Gao P, Chen F. Deaminative defluoroalkylation of α-trifluoromethylalkenes enabled by photoredox catalysis. Org Biomol Chem 2023; 21:294-299. [PMID: 36510767 DOI: 10.1039/d2ob02114e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein, we disclose a new photoredox-catalysed strategy to access gem-difluoroallylarenes from α-trifluoromethylalkenes with sterically hindered primary amines via C-N and C-F bond activation. This deaminative and defluorinative allylation is generally compatible with diverse functional groups and sterically hindered α-3° and 2° primary amines.
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Affiliation(s)
- Guodong Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Liping Cui
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Pan Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
| | - Feng Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225002, Yangzhou, China.
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2
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Zhou Q, Bao Y, Yan G. 2‐Bromo‐3,3,3‐Trifluoropropene: A Versatile Reagent for the Synthesis of Fluorinated Compounds. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200023] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qin Zhou
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
| | - Yining Bao
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
| | - Guobing Yan
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
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3
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4
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Sindhe H, Chaudhary B, Chowdhury N, Kamble A, Kumar V, Lad A, Sharma S. Recent advances in transition-metal catalyzed directed C–H functionalization with fluorinated building blocks. Org Chem Front 2022. [DOI: 10.1039/d1qo01544c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on the advances in transition-metal catalyzed reactions with fluorinated building blocks via directed C–H bond activation for the construction of diverse organic molecules with an insight into the probable mechanistic pathway.
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Affiliation(s)
- Haritha Sindhe
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Bharatkumar Chaudhary
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Neelanjan Chowdhury
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Akshay Kamble
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Vivek Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Aishwarya Lad
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
| | - Satyasheel Sharma
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, Ahmedabad (NIPER-A), Gandhinagar, Gujarat-382355, India
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5
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Levin VV, Dilman AD. One-pot synthesis of α-trifluoromethylstyrenes from aryl ketones and the Ruppert–Prakash reagent. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.09.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Zhang X, Wang H, Xie L, You C, Han X, Weng Z. Copper-Catalyzed Synthesis of 5-Aryl-6-(Trifluoromethyl)-2,3-Dihydropyrazolo[1,2-a]Pyrazol-1(5H)-One. Chem Asian J 2021; 16:2669-2673. [PMID: 34313007 DOI: 10.1002/asia.202100693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/20/2021] [Indexed: 11/11/2022]
Abstract
An efficient protocol for the synthesis of 5-aryl-6-(trifluoromethyl)-2,3-dihydropyrazolo[1,2-a]pyrazol-1(5H)-one derivatives through a copper-catalyzed [3+2]-cycloaddition of azomethine imines with 3,3,3-trifluoropropyne (generated in situ from dehydrobromination of 2-bromo-3,3,3-trifluoropropene under base conditions) is developed. The advantages of this transformation are the broad substrate scope and the good functional group compatibility. The subsequent oxidation and nucleophilic substitution/aromatization provide a new approach to 4-trifluoromethylated pyrazol-1-yl propanoic acids.
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Affiliation(s)
- Xinyu Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hui Wang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Lili Xie
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Chenhui You
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou, 215123, P. R. China
| | - Zhiqiang Weng
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
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7
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Zhang J, Yang JD, Cheng JP. Chemoselective catalytic hydrodefluorination of trifluoromethylalkenes towards mono-/gem-di-fluoroalkenes under metal-free conditions. Nat Commun 2021; 12:2835. [PMID: 33990577 PMCID: PMC8121801 DOI: 10.1038/s41467-021-23101-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/15/2021] [Indexed: 01/08/2023] Open
Abstract
Fluorine-containing moieties show significant effects in improving the properties of functional molecules. Consequently, efficient methods for installing them into target compounds are in great demand, especially those enabled by metal-free catalysis. Here we show a diazaphospholene-catalyzed hydrodefluorination of trifluoromethylalkenes to chemoselectively construct gem-difluoroalkenes and terminal monofluoroalkenes by simple adjustment of the reactant stoichiometry. This metal-free hydrodefluorination features mild reaction conditions, good group compatibility, and almost quantitative yields for both product types. Stoichiometric experiments indicated a stepwise mechanism: hydridic addition to fluoroalkenes and subsequent β-F elimination from hydrophosphination intermediates. Density functional theory calculations disclosed the origin of chemoselectivity, regioselectivity and stereoselectivity, suggesting an electron-donating effect of the alkene-terminal fluorine atom.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin, China.
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8
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Meyer D, El Qacemi M. Applications of 2-Chloro-3,3,3-trifluoroprop-1-ene (HCFO-1233xf): A Rapid Entry to Various β-Substituted-trifluoromethyl-ethenes. Org Lett 2020; 22:3479-3484. [PMID: 32281805 DOI: 10.1021/acs.orglett.0c00931] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient base-promoted reaction of O-, N-, and S-nucleophiles with 2-chloro-3,3,3-trifluoprop-1-ene (HCFO-1233xf) is described providing access to various β-substituted-trifluoromethyl-ethenes under mild reaction conditions. Mechanistic investigations shed some light on the regio-, chemo-, and stereoselectivities observed. The olefins prepared represent attractive intermediates in chemical discovery: some applications include their conversion to pyrrolidines via a [3 + 2] dipolar cycloaddition reaction. These weakly basic amines represent novel synthons that could be readily elaborated through a range of reactions.
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Affiliation(s)
- Daniel Meyer
- Syngenta Crop Protection Research, Stein, Switzerland
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9
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Yao C, Wang S, Norton J, Hammond M. Catalyzing the Hydrodefluorination of CF 3-Substituted Alkenes by PhSiH 3. H• Transfer from a Nickel Hydride. J Am Chem Soc 2020; 142:4793-4799. [PMID: 31935083 DOI: 10.1021/jacs.9b13757] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The hydrodefluorination of CF3-substituted alkenes can be catalyzed by a nickel(II) hydride bearing a pincer ligand. The catalyst loading can be as low as 1 mol%. gem-Difluoroalkenes containing a number of functional groups can be formed in good to excellent yields by a radical mechanism initiated by H• transfer from the nickel hydride. The relative reactivity of various substrates supports the proposed mechanism, as does a TEMPO trapping experiment.
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Affiliation(s)
- Chengbo Yao
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Shuai Wang
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Jack Norton
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Matthew Hammond
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
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10
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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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11
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Palladium-catalyzed synthesis of 3-trifluoromethylated 1,3-dienes from acrylate derivatives and BTP. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Fujita T, Konno N, Watabe Y, Ichitsuka T, Nagaki A, Yoshida JI, Ichikawa J. Flash generation and borylation of 1-(trifluoromethyl)vinyllithium toward synthesis of α-(trifluoromethyl)styrenes. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Phelan JP, Wiles RJ, Lang SB, Kelly CB, Molander GA. Rapid access to diverse, trifluoromethyl-substituted alkenes using complementary strategies. Chem Sci 2018; 9:3215-3220. [PMID: 29732105 PMCID: PMC5916225 DOI: 10.1039/c7sc05420c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/21/2018] [Indexed: 12/12/2022] Open
Abstract
Two synergistic approaches to the facile assembly of complex α-trifluoromethyl alkenes are described. Using α-trifluoromethyl-β-silyl alcohols as masked trifluoromethyl alkenes, cross-coupling or related functionalization processes at distal electrophilic sites can be executed without inducing Peterson elimination. Subsequent Lewis acidic activation affords functionalized α-trifluoromethyl alkenes. Likewise, the development of a novel α-trifluoromethylvinyl trifluoroborate reagent complements this approach and allows a one-step cross-coupling of (hetero)aryl halides to access a broad array of complex α-trifluoromethyl alkenes.
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Affiliation(s)
- James P Phelan
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Rebecca J Wiles
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Simon B Lang
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Christopher B Kelly
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
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14
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Dai K, Wang K, Li Y, Chen JG, Liu ZW, Lu J, Liu ZT. Construction of β-Trifluoromethyl Enol Ether via Base-Promoted C-O Coupling and Rearrangement of Hydrogen Atom. J Org Chem 2017; 82:4721-4728. [PMID: 28426212 DOI: 10.1021/acs.joc.7b00396] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel, high-efficiency and high-selectivity construction of β-trifluoromethyl enol ether via base-induced/promoted C-O coupling of trifluoromethylated vinyl chloride and phenols is presented with a broad substrate scope. The reaction mechanism, especially the significantly high selectivity, was excavated and understood via DFT calculation and is well supported by the experimental observation.
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Affiliation(s)
- Kun Dai
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Kuan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Yang Li
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an 710065, China
| | - Jian-Gang Chen
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Zhong-Wen Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Jian Lu
- State Key Laboratory of Fluorine and Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute , Xi'an 710065, China
| | - Zhao-Tie Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), and School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, China
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15
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On the reactivity of α-trifluoromethylstyrene in radical copolymerizations with various fluoroalkenes. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Palladium-catalyzed Suzuki–Miyaura reaction of fluorinated vinyl chloride: a new approach for synthesis α and α,β-trifluoromethylstyrenes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Zhao Q, Besset T, Poisson T, Bouillon JP, Pannecoucke X. Palladium-Catalysed Synthesis of α-(Trifluoromethyl)styrenes by Means of Directed C-H Bond Functionalization. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501217] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Inoue M, Shiosaki M, Muramaru H. Synthesis of ethyl 3,3,3-trifluoropropionate from 2-bromo-3,3,3-trifluoropropene. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Jiménez-Aquino A, Vega JA, Trabanco AA, Valdés C. A General Synthesis of α-Trifluoromethylstyrenes through Palladium-Catalyzed Cross-Couplings with 1,1,1-Trifluoroacetone Tosylhydrazone. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300994] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Hamlin TA, Kelly CB, Cywar RM, Leadbeater NE. Methylenation of perfluoroalkyl ketones using a Peterson olefination approach. J Org Chem 2014; 79:1145-55. [PMID: 24410210 DOI: 10.1021/jo402577n] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An operationally simple, inexpensive, and rapid route for the olefination of a wide array of trifluoromethyl ketones to yield 3,3,3-trifluoromethylpropenes is reported. Using a Peterson olefination approach, the reaction gives good to excellent yields of the alkene products and can be performed without purification of the β-hydroxysilyl intermediate. The reaction can be extended to other perfluoroalkyl substituents and is easily scaled up. The alkenes prepared can be readily transformed into a variety of other perfluoroalkyl-containing compounds.
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Affiliation(s)
- Trevor A Hamlin
- Department of Chemistry, University of Connecticut , 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
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21
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Patil Y, Ameduri B. Advances in the (co)polymerization of alkyl 2-trifluoromethacrylates and 2-(trifluoromethyl)acrylic acid. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2012.09.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Yamamoto T, Yamakawa T. Pd-Catalyzed Arylation of Chlorotrifluoroethylene Using Arylboronic Acids. Org Lett 2012; 14:3454-7. [DOI: 10.1021/ol3014107] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tetsuya Yamamoto
- Catalysis Group, Sagami Chemical Research Institute, 2743-1 Hayakawa, Ayase, Kanagawa 252-1193, Japan
| | - Tetsu Yamakawa
- Catalysis Group, Sagami Chemical Research Institute, 2743-1 Hayakawa, Ayase, Kanagawa 252-1193, Japan
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23
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Ceretta F, Zaggia A, Conte L, Ameduri B. Optimization of the synthesis of 4′-nonafluorobutylacetophenone by metal catalysed cross-coupling reaction. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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