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Wang J, Luo Z, Wu Y, Tang Y, Yang X, Tsui GC. Copper-Catalyzed Visible-Light-Induced Allylic Difluoromethylation of Unactivated Alkenes Using Difluoroacetic Acid. Org Lett 2023; 25:1045-1049. [PMID: 36752311 DOI: 10.1021/acs.orglett.3c00265] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
We herein describe a straightforward allylic difluoromethylation reaction of unactivated alkenes. Compared to cross-couplings of prefunctionalized allylic substrates for the construction of allylic CF2H bonds, this reaction employs readily available alkenes as substrates under mild conditions. Difluoroacetic acid is used as an inexpensive and easy-to-handle source of CF2H radical under visible light irradiation with PIDA. The copper catalyst plays an important role of diverting the reaction pathway toward allylic difluoromethylation as opposed to previously found hydrodifluoromethylation.
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Affiliation(s)
- Jinlian Wang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Ziwei Luo
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yili Wu
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yihan Tang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Xinkan Yang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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2
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Jaiswal SK, Yadav RK, Kumar K, Singh S, Chaubey S, Singh P, Tripathi SK, Gupta SK, Kim TW, Singh AP. Easy to make highly efficient FG@ACC stable platform for sp3C-CF3 bond generation and NADH regeneration under sun light. MAIN GROUP CHEMISTRY 2022. [DOI: 10.3233/mgc-220071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The conversion of sun light energy into sustainble greener chemicals are a major obstacle due to the use of expensive and toxic materials. Sun light induced trifluoromethylation emerges as a highly efficient procedure to insert trifluoromethyl groups into the organic compounds. Yet, the expensive and toxic properties of the metal-based photocatalysts creates a major obstacle for the insertion of trifluoromethyl groups. Metal free activated carbon cloth (ACC) emerged as a highly efficient pillar in the area of material science. In this work, we have successfully synthesized self-assembled metal free fast green with activated carbon cloth (FG@ACC) photocatalyst for photocatalytic trifluoromethylation and reduced nicotinamide adenine dinucleotide (NADH) cofactor regeneration (85.89 %, 2 h) under sun light. The sun light induced organic transformation promotes the use of low-cost CF3SO2Na as the CF3 radical source to produce highly selective products with 97% yield.
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Affiliation(s)
- Surendra Kumar Jaiswal
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
| | - Rajesh Kumar Yadav
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
| | - Krishna Kumar
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
| | - Satyam Singh
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
| | - Surabhi Chaubey
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
- Department of Chemistry, Chandigarh University, Mohali, Punjab, India
| | - Pooja Singh
- Department of Chemistry, Chandigarh University, Mohali, Punjab, India
| | - Santosh Kumar Tripathi
- Defence material Stores and Research & Development Establishment (DMSRDE), Kanpur, India
| | - Sarvesh Kumar Gupta
- Nanoionics and Energy Storage Laboratory (NanoESL), Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U.P., India
| | - Tae Wu Kim
- Department of Chemistry, Mokpo National University, Muan-gun, Jeollanam-do, Republic of Korea
| | - Atul P. Singh
- Department of Chemistry, Chandigarh University, Mohali, Punjab, India
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3
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Almansa A, Jardel D, Massip S, Tassaing T, Schatz C, Domergue J, Molton F, Duboc C, Vincent JM. Dual Photoredox Ni/Benzophenone Catalysis: A Study of the Ni II Precatalyst Photoreduction Step. J Org Chem 2022; 87:11172-11184. [PMID: 35946789 DOI: 10.1021/acs.joc.2c01467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The combination of NiIIX2 salts with a bipyridine-type ligand and aromatic carbonyl-based chromophores has emerged as a benchmark precatalytic system to efficiently conduct cross-couplings mediated by light. Mechanistic studies have led to two scenarios in which Ni0 is proposed as the catalytic species. Nonetheless, in none of these studies has a NiII to Ni0 photoreduction been evidenced. By exploiting UV-visible, nuclear magnetic resonance, resonance Raman, electron paramagnetic resonance, and dynamic light scattering spectroscopies and also transmission electron microscopy, we report that, when photolyzed by UVA in alcohols, the structurally defined [NiII2(μ-OH2)(dtbbpy)2(BPCO2)4] complex 1 integrating a benzophenone chromophore is reduced into a diamagnetic NiI dimer of the general formula [NiI2(dtbbpy)2(BPCO2)2]. In marked contrast, in THF, photolysis led to the fast formation of Ni0, which accumulates in the form of metallic ultrathin Ni nanosheets characterized by a mean size of ∼100 nm and a surface plasmon resonance at 505 nm. Finally, it is shown that 1 combined with UVA irradiation catalyzes cross-couplings, that is, C(sp3)-H arylation of THF and O-arylation of methanol. These results are discussed in light of the mechanisms proposed for these cross-couplings with a focus on the oxidation state of the catalytic species.
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Affiliation(s)
- Axel Almansa
- Institut des Sciences Moléculaires (ISM), CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Damien Jardel
- Institut des Sciences Moléculaires (ISM), CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Stéphane Massip
- European Institute of Chemistry and Biology (IECB), Univ. Bordeaux, 33600 Pessac, France
| | - Thierry Tassaing
- Institut des Sciences Moléculaires (ISM), CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Christophe Schatz
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, Univ. Bordeaux, 33607 Pessac Cedex, France
| | - Jérémy Domergue
- Département de Chimie Moléculaire (DCM) CNRS UMR 5250, Univ. Grenoble Alpes, F-38000 Grenoble, France
| | - Florian Molton
- Département de Chimie Moléculaire (DCM) CNRS UMR 5250, Univ. Grenoble Alpes, F-38000 Grenoble, France
| | - Carole Duboc
- Département de Chimie Moléculaire (DCM) CNRS UMR 5250, Univ. Grenoble Alpes, F-38000 Grenoble, France
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires (ISM), CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
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4
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Mandal D, Maji S, Pal T, Sinha SK, Maiti D. Recent Advances in Transition-Metal Mediated Trifluoromethylation Reactions. Chem Commun (Camb) 2022; 58:10442-10468. [DOI: 10.1039/d2cc04082d] [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
Fluorine compounds are known for their abundance in more than 20% of pharmaceutical and agrochemical products mainly due to the enhanced lipophilicity, metabolic stability and pharmacokinetic properties of organofluorides. Consequently,...
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Schaugaard RN, Nguyen HM, Schlegel HB. Alkyl Radical-Free Cu(I) Photocatalytic Cross-Coupling: A Theoretical Study of Anomerically Specific Photocatalyzed Glycosylation of Pyranosyl Bromide. Inorg Chem 2021; 60:12801-12812. [PMID: 34432458 DOI: 10.1021/acs.inorgchem.1c01038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Previously, we reported a visible light-activated Cu(I) photocatalyst capable of facilitating C-O bond formation of glycosyl bromides and aliphatic alcohols with a high degree of diastereoselectivity. This catalyst functions equally well in the presence of radical traps, suggesting an entirely inner sphere mechanism atypical for heteroleptic Cu photocatalysis. Further, experimental estimates put the chromophore reducing power at -1.30 V vs Ag/AgCl. This is much more positive than the ∼-2.0 V vs Ag/AgCl onset observed for irreversible reduction of glycosyl bromides in our experiments. Theoretical investigations were undertaken to explain the function of the catalyst. Outer sphere electron transfer from a chromophore to substrate was discounted based on thermodynamics and electron transfer barriers determined by Marcus theory and non-equilibrium solvation calculations. Unactivated and activated chromophores were found to disproportionate to Cu(0) and Cu(II) species. The resulting Cu(0) species undergoes oxidative addition with a glycosyl bromide generating a Cu(II) species. Addition of a nucleophilic alcohol and oxidation of the Cu(II) species to Cu(III) result in rapid reductive elimination forming products and resetting the catalytic cycle.
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Affiliation(s)
- Richard N Schaugaard
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Hien M Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - H Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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6
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Abadie B, Jonusauskas G, McClenaghan ND, Toullec PY, Vincent JM. Alkylation of the α-amino C-H bonds of anilines photocatalyzed by a DMEDA-Cu-benzophenone complex: reaction scope and mechanistic studies. Org Biomol Chem 2021; 19:5800-5805. [PMID: 34110351 DOI: 10.1039/d1ob00960e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cu(ii) complex 1 incorporating a BP chromophore is a highly active and chemoselective photocatalyst for the alkylation of α-amino C-H bonds of anilines. The reaction was shown to proceed with a broad substrate scope in the absence of additives. Extensive mechanistic studies were performed, in particular using transient absorption spectroscopy, and spectroscopic signatures of key intermediates were identified in the conditions of catalysis. Finally, the ability of 1 to act as a multitask catalyst was showcased by conducting multi-component CuAAC and olefin hydroalkylation reactions in one-pot.
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Affiliation(s)
- Baptiste Abadie
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Gediminas Jonusauskas
- Laboratoire Ondes et Matière d'Aquitaine, CNRS UMR 5798, Univ. Bordeaux, 33405 Talence, France
| | - Nathan D McClenaghan
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Patrick Y Toullec
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France
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7
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Shi L, Fu J, Gao S, Chang L, Wang B. Recent Developments in Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1705966] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractThe Mizoroki–Heck reaction is considered as one of the most ingenious and widely used methods for constructing C–C bonds. This reaction mainly focuses on activated olefins (styrenes, acrylates, or vinyl ethers) and aryl/vinyl (pseudo) halides. In comparison, the studies on unactivated alkenes and alkyl electrophiles are far less due to the low reactivity, poor selectivity, as well as competitive β-H elimination. In the past years, a growing interest has thus been devoted and significant breakthroughs have been achieved in the employment of unactivated alkenes and alkyl electrophiles as the reaction components, and this type of coupling is called as Heck-type or Heck-like reaction, which distinguishes from the traditional Heck reaction. Herein, we give a brief summary on Heck-type reaction between unactivated alkenes and alkyl electrophlies, covering its initial work, recent advancements, and mechanistic discussions.1 Introduction2 Intramolecular Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles2.1 Cobalt-Catalyzed Intramolecular Heck-Type Reaction2.2 Palladium-Catalyzed Intramolecular Heck-Type Reaction2.3 Nickel-Catalyzed Intramolecular Heck-Type Reaction2.4 Photocatalysis and Multimetallic Protocol for Intramolecular Heck-Type Reaction3 Intermolecular Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles3.1 Electrophilic Trifluoromethylating Reagent as Reaction Partners3.2 Alkyl Electrophiles as Reaction Partners4 Oxidative Heck-Type Reaction of Unactivated Alkenes and Alkyl Radicals5 Conclusions and Outlook
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Affiliation(s)
- Lili Shi
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School
| | - Shuangqiu Gao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University
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Barthelemy AL, Bourdreux F, Dagousset G, Magnier E. Photoredox-Catalyzed Selective Synthesis of Allylic Perfluoroalkanes from Alkenes. Chemistry 2020; 26:10213-10216. [PMID: 32343860 DOI: 10.1002/chem.202002046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Indexed: 12/22/2022]
Abstract
We report herein a novel photoredox-catalyzed synthesis of allylic trifluoromethanes. The use of sulfilimino iminium as a source of trifluoromethyl radicals proves crucial to achieving high selectivity. Importantly, both styrene derivatives and unactivated alkenes are for the first time suitable partners for this process. The mild reaction conditions are compatible with a variety of functional groups. Remarkably, this method is readily broadened to other perfluoroalkyl groups (RF =CFCl2 , CF2 Br, C4 F9 ). An extensive mechanistic study is also provided.
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Affiliation(s)
- Anne-Laure Barthelemy
- Institut Lavoisier de Versailles, Université Paris-Saclay, UVSQ, CNRS, UMR 8180, 78000, Versailles, France
| | - F Bourdreux
- Institut Lavoisier de Versailles, Université Paris-Saclay, UVSQ, CNRS, UMR 8180, 78000, Versailles, France
| | - Guillaume Dagousset
- Institut Lavoisier de Versailles, Université Paris-Saclay, UVSQ, CNRS, UMR 8180, 78000, Versailles, France
| | - Emmanuel Magnier
- Institut Lavoisier de Versailles, Université Paris-Saclay, UVSQ, CNRS, UMR 8180, 78000, Versailles, France
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9
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Molton F. Simultispin: A versatile graphical user interface for the simulation of solid-state continuous wave EPR spectra. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2020; 58:718-726. [PMID: 32173891 DOI: 10.1002/mrc.5019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/31/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
Solid-state continuous wave (cw) electronic paramagnetic resonance (EPR) spectroscopy is particularly suitable for metal complex analysis. Extracting magnetic parameters by simulation is often necessary to describe the electronic structure of the studied molecular compounds that can have various electronic spin states and characterized by different parameters like g-values, hyperfine coupling or zero field splitting values. Easyspin toolbox on MATLAB is a powerful tool, but for the user, it requires spending time with coding and could discourage nonexperts. Facing this context, we have developed a graphical user interface called Simultispin, dedicated to solid-state cw-EPR spectra simulation. Some examples of experimental spectra of metal complexes (mixture of low spin and high spin FeIII complexes, dynamic disorder of a CuII complex, photogeneration of a MnIII complex), highlighting specific solid-state functions, are described and analyzed based on simulations performed with Simultispin. We hope that its ergonomy and the ease to set up a complete set of parameters to get reliable simulations could help a large EPR community to improve the efficiency of their interpretations.
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Affiliation(s)
- Florian Molton
- Department of Molecular Chemistry, Grenoble Alpes University, Grenoble, France
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10
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Hunter CJ, Boyd MJ, May GD, Fimognari R. Visible-Light-Mediated N-Desulfonylation of N-Heterocycles Using a Heteroleptic Copper(I) Complex as a Photocatalyst. J Org Chem 2020; 85:8732-8739. [PMID: 32482067 DOI: 10.1021/acs.joc.0c00983] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A photoredox protocol that uses a heteroleptic Cu (I) complex, [Cu(dq)(BINAP)]BF4, has been developed for the photodeprotection of benzenesulfonyl-protected N-heterocycles. A range of substrates was examined, including indazoles, indoles, pyrazoles, and benzimidazole, featuring both electron-rich and electron-deficient substituents, giving good yields of the N-heterocycle products with broad functional group tolerance. This transformation was also found to be amenable to flow reaction conditions.
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Affiliation(s)
- Cameron J Hunter
- Vertex Pharmaceuticals Incorporated, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Michael J Boyd
- Vertex Pharmaceuticals Incorporated, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Gregory D May
- Vertex Pharmaceuticals Incorporated, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Robert Fimognari
- Vertex Pharmaceuticals Incorporated, 50 Northern Avenue, Boston, Massachusetts 02210, United States
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Abstract
We have found that the CuCF2CF3 complex generated from low-cost pentafluoroethane is a convenient and practical source for the CF2CF3 radical under aerobic conditions at room temperature. Using this system, readily available unactivated alkenes can be pentafluoroethylated to provide novel allylic CF2CF3 compounds with excellent E-selectivity and functional group tolerability. Mechanistic studies including TEMPO-CF2CF3 trapping and radical clock experiments provided strong evidence for radical pathways, offering a new opportunity for copper-mediated radical perfluoroalkylation.
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Affiliation(s)
- Xinkan Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
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12
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Deng Y, Zhao C, Zhou Y, Wang H, Li X, Cheng GJ, Fu J. Directing-Group-Based Strategy Enabling Intermolecular Heck-Type Reaction of Cycloketone Oxime Esters and Unactivated Alkenes. Org Lett 2020; 22:3524-3530. [DOI: 10.1021/acs.orglett.0c00963] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yi Deng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Chunyang Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu Zhou
- Warshel Institute for Computational Biology, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen 518172, China
- School of Life Sciences, University of Science and Technology of China, 230027 Hefei, Anhui, China
| | - Hongwei Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xuexiang Li
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Gui-Juan Cheng
- Warshel Institute for Computational Biology, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen 518172, China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
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Xu R, Cai C. Iron-catalyzed three-component intermolecular trifluoromethyl-acyloxylation of styrenes with NaSO2CF3 and benzoic acids. Org Chem Front 2020. [DOI: 10.1039/c9qo01342c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new iron-catalyzed intermolecular three-component trifluoromethyl-acyloxylation of styrenes has been developed with a broad substrate scope under mild conditions.
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Affiliation(s)
- Rui Xu
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Chun Cai
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
- Key Laboratory of Organofluorine Chemistry
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14
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Abadie B, Jardel D, Pozzi G, Toullec P, Vincent JM. Dual Benzophenone/Copper-Photocatalyzed Giese-Type Alkylation of C(sp 3 )-H Bonds. Chemistry 2019; 25:16120-16127. [PMID: 31595555 DOI: 10.1002/chem.201904111] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Indexed: 01/24/2023]
Abstract
Photocatalyzed Giese-type alkylations of C(sp3 )-H bonds are very attractive reactions in the context of atom-economy in C-C bond formation. The main limitation of such reactions is that when using highly polymerizable olefin acceptors, such as unsubstituted acrylates, acrylonitrile, or methyl vinyl ketone, radical polymerization often becomes the dominant or exclusive reaction pathway. Herein, we report that the polymerization of such olefins is strongly limited or suppressed when combining the photocatalytic activity of benzophenone (BP) with a catalytic amount of Cu(OAc)2 . Under mild and operationally simple conditions, the Giese adducts resulting from the C(sp3 )-H functionalization of amines, alcohols, ethers, and cycloalkanes could be synthesized. Preliminary mechanistic studies have revealed that the reaction does not proceed through a radical chain, but through a dual BP/Cu photocatalytic process, in which both CuII and low-valent CuI/0 species, generated in situ by reduction by the BP ketyl radical, may react with α-keto or α-cyano intermediate radicals, thus preventing polymerization.
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Affiliation(s)
- Baptiste Abadie
- Institut des Sciences Moléculaires, CNRS UMR5255, Université Bordeaux, 33405, Talence, France
| | - Damien Jardel
- Institut des Sciences Moléculaires, CNRS UMR5255, Université Bordeaux, 33405, Talence, France
| | - Gianluca Pozzi
- CNR-Istituto di Scienze e Tecnologie Molecolari (ISTM), via Golgi 19, 20133, Milano, Italy
| | - Patrick Toullec
- Institut des Sciences Moléculaires, CNRS UMR5255, Université Bordeaux, 33405, Talence, France
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires, CNRS UMR5255, Université Bordeaux, 33405, Talence, France
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16
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Kawamura S, Sodeoka M. Fluoroalkylation Methods for Synthesizing Versatile Building Blocks. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190080] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shintaro Kawamura
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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17
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Traub L, Reiser O. Homogeneous visible light mediated transition metal catalysis other than Ruthenium and Iridium. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2017-0172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The field of photoredox chemistry is dominated by ruthenium- or iridium based metal complexes or organic dyes that are employed as catalysts. Other metal based coordination compounds provide a cost efficient alternative, however, the much shorter excited lifetimes generally observed for such complexes make their application more challenging. Nevertheless, a growing number of successful examples with metal complexes based on chromium, iron, nickel, zirconium, cerium, rhenium, platinum, uranium, and especially on copper exist, which is being reviewed in this chapter.
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18
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Mou XQ, Rong FM, Zhang H, Chen G, He G. Copper(I)-Catalyzed Enantioselective Intramolecular Aminotrifluoromethylation of O-Homoallyl Benzimidates. Org Lett 2019; 21:4657-4661. [DOI: 10.1021/acs.orglett.9b01552] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xue-Qing Mou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Feng-Ming Rong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Heng Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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19
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Yi X, Hu X. Formal Aza‐Wacker Cyclization by Tandem Electrochemical Oxidation and Copper Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814509] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiangli Yi
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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20
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Yi X, Hu X. Formal Aza-Wacker Cyclization by Tandem Electrochemical Oxidation and Copper Catalysis. Angew Chem Int Ed Engl 2019; 58:4700-4704. [PMID: 30698900 DOI: 10.1002/anie.201814509] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/29/2019] [Indexed: 12/31/2022]
Abstract
In oxidative electrochemical organic synthesis, radical intermediates are often oxidized to cations on the way to final product formation. Herein, we describe an approach to transform electrochemically generated organic radical intermediates into neutral products by reaction with a metal catalyst. This approach combines electrochemical oxidation with Cu catalysis to effect formal aza-Wacker cyclization of internal alkenes. The Cu catalyst is essential for transforming secondary and primary alkyl radical intermediates into alkenes. A wide range of 5-membered N-heterocycles including oxazolidinone, imidazolidinone, thiazolidinone, pyrrolidinone, and isoindolinone can be prepared under mild conditions.
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Affiliation(s)
- Xiangli Yi
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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21
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Guo J, Xu C, Liu X, Wang M. Aryltrifluoromethylative cyclization of unactivated alkenes by the use of PhICF 3Cl under catalyst-free conditions. Org Biomol Chem 2019; 17:2162-2168. [PMID: 30720035 DOI: 10.1039/c8ob03189d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A concise and catalyst-free aryltrifluoromethylative cyclization of unactivated alkenes has been developed herein. The use of PhICF3Cl as a powerful trifluoromethylating agent allows easy transformations. A set of trifluoroethylated carbocycles and aza-hereocycles were efficiently synthesized in good yield and selectivity. A broad substrate scope, mild reaction conditions, and easy operation would make this method well-suited for applications.
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Affiliation(s)
- Jia Guo
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, China
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22
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Tong Y, Pan H, Huang W, Qiu W, Ding Z, Xu C, Yuan R. Visible-light photocatalytic trifluoromethylation of arenes using graphene oxide as a metal-free photocatalyst. NEW J CHEM 2019. [DOI: 10.1039/c9nj01188a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene oxide sheets can function as a kind of metal-free photocatalyst for the trifluoromethylation of arenes under visible light irradiation.
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Affiliation(s)
- Ying Tong
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Hao Pan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Weichao Huang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Wenzhao Qiu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Zhengxin Ding
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Chao Xu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Rusheng Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
- Fuzhou 350002
- P. R. China
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23
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Liang D, Dong Q, Xu P, Dong Y, Li W, Ma Y. Synthesis of CF 3CH 2-Containing Indolines by Transition-Metal-Free Aryltrifluoromethylation of Unactivated Alkenes. J Org Chem 2018; 83:11978-11986. [PMID: 30198264 DOI: 10.1021/acs.joc.8b01861] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
With an unactivated double bond as the radical acceptor, allyl amines underwent a metal-free trifluoromethylation/cyclization cascade with CF3SO2Na (Langlois' reagent), affording CF3CH2-containing indolines and tetrahydroisoquinolines, whose practical syntheses are significant challenges. This protocol features mild conditions, low cost, and a broad substrate scope.
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Affiliation(s)
- Deqiang Liang
- Department of Chemistry , Kunming University , Kunming 650214 , China.,Yunnan Engineering Technology Research Center for Plastic Films , Kunming 650214 , China
| | - Qishan Dong
- Department of Chemistry , Kunming University , Kunming 650214 , China
| | - Penghui Xu
- Department of Chemistry , Kunming University , Kunming 650214 , China
| | - Ying Dong
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , China
| | - Weili Li
- Yunnan Engineering Technology Research Center for Plastic Films , Kunming 650214 , China
| | - Yinhai Ma
- Department of Chemistry , Kunming University , Kunming 650214 , China
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24
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Rawner T, Lutsker E, Kaiser CA, Reiser O. The Different Faces of Photoredox Catalysts: Visible-Light-Mediated Atom Transfer Radical Addition (ATRA) Reactions of Perfluoroalkyl Iodides with Styrenes and Phenylacetylenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00847] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Thomas Rawner
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Eugen Lutsker
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Christian A. Kaiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
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25
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Harris CF, Kuehner CS, Bacsa J, Soper JD. Photoinduced Cobalt(III)−Trifluoromethyl Bond Activation Enables Arene C−H Trifluoromethylation. Angew Chem Int Ed Engl 2018; 57:1311-1315. [DOI: 10.1002/anie.201711693] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/12/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Caleb F. Harris
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332-0400 USA
| | - Christopher S. Kuehner
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332-0400 USA
| | - John Bacsa
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332-0400 USA
- X-ray Crystallography Center Department of Chemistry Emory University Atlanta GA 30322 USA
| | - Jake D. Soper
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332-0400 USA
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26
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Harris CF, Kuehner CS, Bacsa J, Soper JD. Photoinduced Cobalt(III)−Trifluoromethyl Bond Activation Enables Arene C−H Trifluoromethylation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711693] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Caleb F. Harris
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta GA 30332-0400 USA
| | - Christopher S. Kuehner
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta GA 30332-0400 USA
| | - John Bacsa
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta GA 30332-0400 USA
- X-ray Crystallography Center; Department of Chemistry; Emory University; Atlanta GA 30322 USA
| | - Jake D. Soper
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta GA 30332-0400 USA
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27
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Beniazza R, Remisse L, Jardel D, Lastécouères D, Vincent JM. Light-mediated iodoperfluoroalkylation of alkenes/alkynes catalyzed by chloride ions: role of halogen bonding. Chem Commun (Camb) 2018; 54:7451-7454. [DOI: 10.1039/c8cc02765j] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A catalytic amount of chloride ions greatly facilitates the UVA-mediated iodoperfluoroalkylation of alkenes and alkynes.
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Affiliation(s)
- Redouane Beniazza
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | - Lionel Remisse
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | - Damien Jardel
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | | | - Jean-Marc Vincent
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
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28
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Kawamura S, Sekine D, Sodeoka M. Synthesis of CF3-containing oxazolines via trifluoromethylation of allylamides with Togni reagent in the presence of alkali metal iodides. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.07.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Fan J, Wang T, Li C, Wang R, Lei X, Liang Y, Zhang Z. Synthesis of Benzoaryl-5-yl(2-hydroxyphenyl)methanones via Photoinduced Rearrangement of (E)-3-Arylvinyl-4H-chromen-4-ones. Org Lett 2017; 19:5984-5987. [DOI: 10.1021/acs.orglett.7b03007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jinming Fan
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Tao Wang
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Chenchen Li
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Rui Wang
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Xiaoyu Lei
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Yong Liang
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
| | - Zunting Zhang
- Key Laboratory of the Ministry
of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,
National Engineering Laboratory for Resource Development of Endangered
Crude Drugs in Northwest of China, and School of Chemistry and Chemical
Engineering, Shaanxi Normal University, Xi’an 710119, People’s Republic of China
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30
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Zhang HY, Ge C, Zhao J, Zhang Y. Cobalt-Catalyzed Trifluoromethylation–Peroxidation of Unactivated Alkenes with Sodium Trifluoromethanesulfinate and Hydroperoxide. Org Lett 2017; 19:5260-5263. [DOI: 10.1021/acs.orglett.7b02353] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hong-Yu Zhang
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Chao Ge
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Jiquan Zhao
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Yuecheng Zhang
- School
of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
- National-Local
Joint Engineering Laboratory for Energy Conservation of Chemical Process
Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, P. R. China
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31
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Wu X, Riedel J, Dong VM. Transforming Olefins into γ,δ-Unsaturated Nitriles through Copper Catalysis. Angew Chem Int Ed Engl 2017; 56:11589-11593. [PMID: 28796438 PMCID: PMC6824592 DOI: 10.1002/anie.201705859] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/18/2017] [Indexed: 02/06/2023]
Abstract
We have developed a strategy to transform olefins into homoallylic nitriles through a mechanism that combines copper catalysis with alkyl nitrile radicals. The radicals are easily generated from alkyl nitriles in the presence of the mild oxidant di-tert-butyl peroxide. This cross-dehydrogenative coupling between simple olefins and alkylnitriles bears advantages over the conventional use of halides and toxic cyanide reagents. With this method, we showcase the facile synthesis of a flavoring agent, a natural product, and a polymer precursor from simple olefins.
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Affiliation(s)
| | | | - Vy M. Dong
- Department of Chemistry, University of
California, Irvine, 4403 Natural Sciences 1, Irvine, California 92697 (United
States)
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32
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Wu X, Riedel J, Dong VM. Transforming Olefins into
γ
,
δ
‐Unsaturated Nitriles through Copper Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xuesong Wu
- Department of Chemistry University of California, Irvine 4403 Natural Sciences 1 Irvine CA 92697 USA
| | - Jan Riedel
- Department of Chemistry University of California, Irvine 4403 Natural Sciences 1 Irvine CA 92697 USA
| | - Vy M. Dong
- Department of Chemistry University of California, Irvine 4403 Natural Sciences 1 Irvine CA 92697 USA
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33
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Ge L, Li Y, Jian W, Bao H. Alkyl Esterification of Vinylarenes Enabled by Visible-Light-Induced Decarboxylation. Chemistry 2017; 23:11767-11770. [PMID: 28681966 DOI: 10.1002/chem.201702385] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Liang Ge
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; University of Chinese Academy of Sciences; 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; University of Chinese Academy of Sciences; 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Wujun Jian
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; University of Chinese Academy of Sciences; 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; University of Chinese Academy of Sciences; 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
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34
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Umemoto T, Zhang B, Zhu T, Zhou X, Zhang P, Hu S, Li Y. Powerful, Thermally Stable, One-Pot-Preparable, and Recyclable Electrophilic Trifluoromethylating Agents: 2,8-Difluoro- and 2,3,7,8-Tetrafluoro-S-(trifluoromethyl)dibenzothiophenium Salts. J Org Chem 2017; 82:7708-7719. [PMID: 28541682 DOI: 10.1021/acs.joc.7b00669] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although many electrophilic trifluoromethylating agents have been reported to date, practically useful reagents have yet to be developed. S-(Trifluoromethyl)dibenzothiophenium salts, known as Umemoto's reagents, have two significant drawbacks that have hampered their practical application: (1) synthesis involving many steps and (2) the formation of large amounts of dibenzothiophene as waste after trifluoromethylation. Our idea to substitute fluorine at specific positions on the dibenzothiophenium rings has resulted in massive improvements in the synthesis, properties, reactivity, and applications of these compounds. On the basis of this idea, 2,8-difluoro- and 2,3,7,8-tetrafluoro-S-(trifluoromethyl)dibenzothiophenium triflates and other salts were developed as powerful, thermally stable, one-pot-preparable, and recyclable reagents for the trifluoromethylation of various types of nucleophilic substrates, such as carbanions, (hetero)aromatics, alkenes, alkynes, thiols, sulfinates, and phosphines. This one-pot and recycled production tremendously decreases the chemical and environmental costs of this process. Because of their higher reactivity and thermal stability, these new reagents may have wider applications than Umemoto's reagents. Therefore, these new versions of Umemoto's reagents could be widely used as the first practically useful electrophilic trifluoromethylating agents for the production of many types of trifluoromethyl-containing compounds in academic and industrial applications.
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Affiliation(s)
- Teruo Umemoto
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
| | - Bin Zhang
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
| | - Tianhao Zhu
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
| | - Xiaocong Zhou
- Zhejiang Jiuzhou Pharmaceutical Technology Co., Ltd., Jiangling Road 88, Binjiang, Hangzhou, Zhejiang 310000, China
| | - Peng Zhang
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
| | - Song Hu
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
| | - Yuanqiang Li
- R&D Center, Zhejiang Jiuzhou Pharmaceutical Co., Ltd., Waisha Road 99, Jiaojiang, Taizhou, Zhejiang 318000, China
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35
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Matsuzaki K, Hiromura T, Tokunaga E, Shibata N. Trifluoroethoxy-Coated Subphthalocyanine affects Trifluoromethylation of Alkenes and Alkynes even under Low-Energy Red-Light Irradiation. ChemistryOpen 2017; 6:226-230. [PMID: 28413756 PMCID: PMC5390801 DOI: 10.1002/open.201600172] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 01/23/2017] [Indexed: 12/23/2022] Open
Abstract
Photoredox chemical reactions induced by visible light have undergone a renaissance in recent years. Polypyridyl dyes such as Ir(ppy)3 and Ru(bpy)3 are key catalysts in this event, and blue- or white-light irradiation is required for the chemical transformations. However, it remains a challenge to achieve reactions under the lower energy of red light. We disclose, herein, that trifluoroethoxy-coated subphthalocyanine realizes the red-light-driven trifluoromethylation of alkenes and alkynes with trifluoromethyl iodide in good-to-high yields. Perfluoroalkylations were also achieved under red light. The reaction mechanism is discussed with the support of UV/Vis spectroscopy and cyclic voltammetry of trifluoroethoxy-coated subphthalocyanine. Light irradiation/dark study also supports the proposed mechanism.
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Affiliation(s)
- Kohei Matsuzaki
- Department of Nanopharmaceutical Sciences & Department of Life and Applied ChemistryNagoya Institute of Technology, Gokiso, Showa-kuNagoya466–8555Japan
| | - Tomoya Hiromura
- Department of Nanopharmaceutical Sciences & Department of Life and Applied ChemistryNagoya Institute of Technology, Gokiso, Showa-kuNagoya466–8555Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences & Department of Life and Applied ChemistryNagoya Institute of Technology, Gokiso, Showa-kuNagoya466–8555Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences & Department of Life and Applied ChemistryNagoya Institute of Technology, Gokiso, Showa-kuNagoya466–8555Japan
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36
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Beniazza R, Douarre M, Lastécouères D, Vincent JM. Metal-free and light-promoted radical iodotrifluoromethylation of alkenes with Togni reagent as the source of CF3 and iodine. Chem Commun (Camb) 2017; 53:3547-3550. [DOI: 10.1039/c7cc00214a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Iodotrifluoromethylation of alkenes is effectively conducted by combining benzophenone, “black light”, isopropanol and Togni reagent 1 as the source of both the CF3 group and iodine atom.
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Affiliation(s)
- Redouane Beniazza
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | - Maxime Douarre
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | | | - Jean-Marc Vincent
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
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37
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Beniazza R, Abadie B, Remisse L, Jardel D, Lastécouères D, Vincent JM. Light-promoted metal-free cross dehydrogenative couplings on ethers mediated by NFSI: reactivity and mechanistic studies. Chem Commun (Camb) 2017; 53:12708-12711. [DOI: 10.1039/c7cc05854c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cross dehydrogenative couplings on ethers are performed very effectively in a one-pot process using NFSI as oxidizing agent under low-intensity UVA irradiation in the presence of 2 mol% benzophenone.
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Affiliation(s)
- Redouane Beniazza
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- Talence 33405
- France
| | - Baptiste Abadie
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- Talence 33405
- France
| | - Lionel Remisse
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- Talence 33405
- France
| | - Damien Jardel
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- Talence 33405
- France
| | | | - Jean-Marc Vincent
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- Talence 33405
- France
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38
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Perfluoroalkylation of Alkenes by Frustrated Lewis Pairs. Chemistry 2016; 22:17177-17181. [DOI: 10.1002/chem.201604414] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 11/07/2022]
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39
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Chatterjee T, Iqbal N, You Y, Cho EJ. Controlled Fluoroalkylation Reactions by Visible-Light Photoredox Catalysis. Acc Chem Res 2016; 49:2284-2294. [PMID: 27626105 DOI: 10.1021/acs.accounts.6b00248] [Citation(s) in RCA: 344] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Owing to their unique biological, physical, and chemical properties, fluoroalkylated organic substances have attracted significant attention from researchers in a variety of disciplines. Fluoroalkylated compounds are considered particularly important in pharmaceutical chemistry because of their superior lipophilicity, binding selectivity, metabolic stability, and bioavailability to those of their nonfluoroalkylated analogues. We have developed various methods for the synthesis of fluoroalkylated substances that rely on the use of visible-light photoredox catalysis, a powerful preparative tool owing to its environmental benignity and mechanistic versatility in promoting a large number of synthetically important reactions with high levels of selectivity. In this Account, we describe the results of our efforts, which have led to the development of visible-light photocatalytic methods for the introduction of a variety of fluoroalkyl groups (such as, -CF3, -CF2R, -CH2CF3, -C3F7, and -C4F9) and arylthiofluoroalkyl groups (such as, -CF2SPh, -C2F4SAr, and -C4F8SAr) to organic substances. In these studies, electron-deficient carbon-centered fluoroalkyl radicals were successfully generated by the appropriate choice of fluoroalkyl source, photocatalyst, additives, and solvent. The redox potentials of the photocatalysts and the fluoroalkyl sources and the choice of sacrificial electron donor or acceptor as the additive affected the photocatalytic pathway, determining whether an oxidative or reductive quenching pathway was operative for the generation of key fluoroalkyl radicals. Notably, we have observed that additives significantly affect the efficiencies and selectivities of these reactions and can even change the outcome of the reaction by playing additional roles during its course. For instance, a tertiary amine as an additive in the reaction medium can act not only as a sacrificial electron donor in photoredox catalysis but also as a hydrogen atom source, an elimination base for dehydrohalogenation of the intermediate, and also a Brønsted base for deprotonation. In the same context, the selection of solvent is also critical since it affects the rate and selectivity of reactions depending upon its polarity and reagent solubilizing ability and plays additional roles in the process, for example, as a hydrogen atom source. By clearly understanding the roles of additives and solvent, we designed several controlled fluoroalkylation reactions where different products were formed selectively from the same starting substrates. In addition, we could exploit one of the most important advantages of radical reactions, that is, the use of unactivated π-systems such as alkenes, alkynes, arenes, and heteroarenes as radical acceptors without prefunctionalization. Furthermore, fluoroalkylation processes under mild room-temperature reaction conditions tolerate various functional groups and are therefore easily applicable to late-stage modifications of highly functionalized advanced intermediates.
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Affiliation(s)
- Tanmay Chatterjee
- Department
of Chemistry, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
| | - Naeem Iqbal
- Health
Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, P.O. Box 577, Jhang Road, Faisalabad 38000, Pakistan
| | - Youngmin You
- Division
of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Eun Jin Cho
- Department
of Chemistry, Chung-Ang University, 84 Heukseok-ro,
Dongjak-gu, Seoul 06974, Republic of Korea
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40
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Beniazza R, Atkinson R, Absalon C, Castet F, Denisov SA, McClenaghan ND, Lastécouères D, Vincent JM. Benzophenonevs. Copper/Benzophenone in Light-Promoted Atom Transfer Radical Additions (ATRAs): Highly Effective Iodoperfluoroalkylation of Alkenes/Alkynes and Mechanistic Studies. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600501] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Redouane Beniazza
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Rachel Atkinson
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Christelle Absalon
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Frédéric Castet
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Sergey A. Denisov
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | | | | | - Jean-Marc Vincent
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
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41
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Roh GB, Iqbal N, Cho EJ. Trifluoroethylation of Alkynes: Synthesis of Allylic-CF3
Compounds by Visible-Light Photocatalysis. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201500919] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Saidalimu I, Suzuki S, Tokunaga E, Shibata N. Activation of Trifluoromethylthio Moiety by Appending Iodonium Ylide under Copper Catalysis for Electrophilic Trifluoromethylation Reaction. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ibrayim Saidalimu
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso, Showa‐ku, Nagoya 466‐8555, Japan
| | - Shugo Suzuki
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa‐ku, Nagoya 466‐8555, Japan
| | - Etsuko Tokunaga
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso, Showa‐ku, Nagoya 466‐8555, Japan
| | - Norio Shibata
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso, Showa‐ku, Nagoya 466‐8555, Japan
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa‐ku, Nagoya 466‐8555, Japan
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43
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Jacquet J, Blanchard S, Derat E, Desage-El Murr M, Fensterbank L. Redox-ligand sustains controlled generation of CF 3 radicals by well-defined copper complex. Chem Sci 2016; 7:2030-2036. [PMID: 29899928 PMCID: PMC5968567 DOI: 10.1039/c5sc03636d] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/27/2015] [Indexed: 01/17/2023] Open
Abstract
A well-defined copper complex bearing iminosemiquinone ligands performs single electron reduction of an electrophilic CF3+ source into CF˙3 radicals. This redox behavior is enabled by the ligand which shuttles through two different redox states (iminosemiquinone and iminobenzoquinone) while the copper center is preserved as a Cu(ii). This system was used in the trifluoromethylation of silyl enol ethers, heteroaromatics and in the hydrotrifluoromethylation of alkynes. This is the first example of cooperative redox catalysis for the controlled generation of CF˙3 radicals.
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Affiliation(s)
- Jérémy Jacquet
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Sébastien Blanchard
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Etienne Derat
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Marine Desage-El Murr
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
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44
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Pan X, Xia H, Wu J. Recent advances in photoinduced trifluoromethylation and difluoroalkylation. Org Chem Front 2016. [DOI: 10.1039/c6qo00153j] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recent advances in photoinduced trifluoromethylation and difluoroalkylation under photocatalysis are summarized. Most of the photoredox reactions proceed efficiently under mild conditions with simple operation. Various fluorinated reagents are developed and applied in different transformations.
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Affiliation(s)
- Xiaolin Pan
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Hongguang Xia
- Department of Biochemistry and Molecular Biology
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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45
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An Y, Kuang Y, Wu J. Synthesis of trifluoromethylated 3,4-dihydroquinolin-2(1H)-ones via a photo-induced radical cyclization of benzene-tethered 1,7-enynes with Togni reagent. Org Chem Front 2016. [DOI: 10.1039/c6qo00267f] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A photoinduced radical cyclization of benzene-tethered 1,7-enynes with Togni reagent in the presence of sodium iodide is developed. This transformation works well without any metals or photo-redox catalysts at room temperature.
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Affiliation(s)
- Yuanyuan An
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Yunyan Kuang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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46
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Xiang Y, Kuang Y, Wu J. Generation of benzosultams via trifluoromethylation of 2-ethynylbenzenesulfonamide under visible light. Org Chem Front 2016. [DOI: 10.1039/c6qo00120c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under visible light irradiation, 2-ethynylbenzenesulfonamides react with Togni's reagent in the presence of a photocatalyst leading to 3-(2,2,2-trifluoroethylidene)-2,3-dihydrobenzo[d]isothiazole 1,1-dioxides in good yields. This transformation proceeds efficiently at room temperature through a photo-initiated trifluoromethylation.
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Affiliation(s)
- Yuanchao Xiang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Yunyan Kuang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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47
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Beniazza R, Bayo N, Molton F, Duboc C, Massip S, McClenaghan N, Lastécouères D, Vincent JM. Effective ascorbate-free and photolatent click reactions in water using a photoreducible copper(II)-ethylenediamine precatalyst. Beilstein J Org Chem 2015; 11:1950-9. [PMID: 26664615 PMCID: PMC4661010 DOI: 10.3762/bjoc.11.211] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/25/2015] [Indexed: 12/27/2022] Open
Abstract
The search for copper catalysts able to perform effectively click reactions in water in the absence of sodium ascorbate is an active area of current research with strong potential for applications in bioconjugation. The water-soluble and photoreducible copper(II)-EDA (EDA = ethylenediamine) complex 1, which has two 4-benzoylbenzoates acting as both counterion and photosensitizer, has been synthesized and characterized by different techniques including single crystal X-ray diffraction. Highly efficient photoreduction was demonstrated when solutions of 1 in hydrogen atom donating solvents, such as THF or MeOH, were exposed to UVA radiation (350-400 nm) provided by a low pressure mercury lamp (type TLC = thin-layer chromatography, 365 nm), or by a 23 W fluorescent bulb, or by ambient/sunlight. In water, a much poorer hydrogen atom donating solvent, the photoreduction of 1 proved inefficient. Interestingly, EPR studies revealed that complex 1 could nonetheless be effectively photoreduced in water when alkynes were present in solution. The catalytic activity of 1 for click reactions involving a range of water-soluble alkynes and azides, in particular saccharides, was tested under various illumination conditions. Complex 1 was found to exhibit a photolatent character, the photogenerated copper(I) being very reactive. On irradiating aqueous reaction mixtures containing 1 mol % of 1 at 365 nm (TLC lamp) for 1 h, click reactions were shown to proceed to full conversion.
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Affiliation(s)
- Redouane Beniazza
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351 Crs de la Libération, 33405 Talence, France
| | - Natalia Bayo
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351 Crs de la Libération, 33405 Talence, France
| | - Florian Molton
- Univ. Grenoble Alpes, DCM UMR-CNRS 5250, F-38000 Grenoble, France
| | - Carole Duboc
- Univ. Grenoble Alpes, DCM UMR-CNRS 5250, F-38000 Grenoble, France
| | - Stéphane Massip
- Univ. Bordeaux, IECB, UMS 3033/US 001, 2 rue Escarpit, 33607 Pessac, France ; CNRS, IECB, UMS 3033, 33600 Pessac, France ; INSERM, IECB, US 001, 33600 Pessac, France
| | - Nathan McClenaghan
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351 Crs de la Libération, 33405 Talence, France
| | - Dominique Lastécouères
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351 Crs de la Libération, 33405 Talence, France
| | - Jean-Marc Vincent
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351 Crs de la Libération, 33405 Talence, France
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48
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Li L, Huang M, Liu C, Xiao JC, Chen QY, Guo Y, Zhao ZG. 2,2,2-Trifluoroethylation of Styrenes with Concomitant Introduction of a Hydroxyl Group from Molecular Oxygen by Photoredox Catalysis Activated by Visible Light. Org Lett 2015; 17:4714-7. [DOI: 10.1021/acs.orglett.5b02177] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Lun Li
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P.R. China
| | - Meiwei Huang
- College
of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Chao Liu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P.R. China
| | - Ji-Chang Xiao
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P.R. China
| | - Qing-Yun Chen
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P.R. China
| | - Yong Guo
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P.R. China
| | - Zhi-Gang Zhao
- College
of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
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49
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Jochyms Q, Guillot P, Mignard E, Vincent JM. A fluorosurfactant and photoreducible CuII-tren click catalyst: surfactant and catalytic properties at liquid/liquid interfaces. Dalton Trans 2015; 44:19700-7. [DOI: 10.1039/c5dt02039e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluorous copper(ii)-tren complex2is a powerful surfactant which strongly reduces the perfluorodecalin/water and diisopropyl ether/water interface tensions. When photoreduced by light it catalyzes the Huisgen click cycloaddition.
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