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Muthuvel K, Gandhi T. C–F Bond Activation and Functionalizations enabled by Metal‐free NHCs and Their Metal Complexes. ChemCatChem 2022. [DOI: 10.1002/cctc.202101579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Karthick Muthuvel
- Vellore Institute of Technology: VIT University Department of Chemistry INDIA
| | - Thirumanavelan Gandhi
- VIT University Materials Chemistry Division, School of Advanced Sciences VIT University 632014 Vellore INDIA
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2
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Kundu G, Ajithkumar VS, Bisai MK, Tothadi S, Das T, Vanka K, Sen SS. Diverse reactivity of carbenes and silylenes towards fluoropyridines. Chem Commun (Camb) 2021; 57:4428-4431. [PMID: 33949460 DOI: 10.1039/d1cc01401c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of IDipp with C5F5N led to functionalization of all three carbon atoms of the imidazole ring with HF2- as the counter-anion (1). Reactivity with 2,3,5,6-tetrafluoropyridine gives only C-F bond activation leaving C-H bonds intact (5b). The reaction of SIDipp with C5F5N in the presence of BF3 afforded the ring cleavage product (3). Analogous reactions with silylene led to oxidative addition at the Si(ii) center.
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Affiliation(s)
- Gargi Kundu
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - V S Ajithkumar
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Milan Kumar Bisai
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Srinu Tothadi
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India
| | - Tamal Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India and Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India and Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sakya S Sen
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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3
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Lee E, Pietrasiak E. Activation of C–F, Si–F, and S–F Bonds by N-Heterocyclic Carbenes and Their Isoelectronic Analogues. Synlett 2020. [DOI: 10.1055/s-0040-1707106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Reactions involving C–F, Si–F, and S–F bond cleavage with N-heterocyclic carbenes and isoelectronic species are reviewed. Most examples involve activation of aromatic C–F bond via an SNAr pathway and nucleophilic substitution of fluorine in electron-deficient olefins. The mechanism of the C–F bond activation depends on the reaction partners and the reaction can proceed via addition–elimination, oxidative addition (concerted or stepwise) or metathesis. The adducts formed upon substitution find applications in organic synthesis, as ligands and as stable radical precursors, but in most cases, their full potential remains unexplored.1 Introduction1.1 The C–F Bond1.2 C–F Bond Activation: A Short Summary1.3 C–F Bond Activation: A Special Case of SNAr1.4 N-Heterocyclic Carbenes (NHCs)1.5 The Purpose of this Article2 C–F bond Activation in Acyl Fluorides3 Activation of Vinylic C–F Bonds4 Activation of Aromatic C–F Bonds5 X–F Bond Activation (X = S or Si)6 C–F Bond Activation by Main Group Compounds Isoelectronic with NHCs7 Conclusions and Outlook
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Affiliation(s)
- Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology
- Division of Advanced Materials Science, Pohang University of Science and Technology
| | - Ewa Pietrasiak
- Department of Chemistry, Pohang University of Science and Technology
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4
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018; 57:6638-6642. [DOI: 10.1002/anie.201802321] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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5
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802321] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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Sen SS, Roesky HW. Silicon-fluorine chemistry: from the preparation of SiF2to C–F bond activation using silylenes and its heavier congeners. Chem Commun (Camb) 2018; 54:5046-5057. [DOI: 10.1039/c8cc01816b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The feisty nature of silicon(ii) fluorides has been harnessed by two cyclic alkyl amino carbene (cAAC) ligands and (cAAC)2SiF2has been isolated at room temperature and structurally characterized.
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Affiliation(s)
- Sakya S. Sen
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Herbert W. Roesky
- Institute of Inorganic Chemistry
- Georg-August University
- Goettingen
- Germany
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7
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Leclerc MC, Da Gama JG, Gabidullin BM, Baker RT. A closer look at the reactivity between N-heterocyclic carbenes and fluoroalkenes. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Chabour I, Castelló LM, Mancebo-Aracil J, Martín-Rodríguez M, de Gracia Retamosa M, Nájera C, Sansano JM. Dual chiral silver catalyst in the synthetic approach to the core of hepatitis C virus inhibitor GSK 625433 using enantioselective 1,3-dipolar cycloaddition of azomethine ylides and electrophilic alkenes. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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9
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Swamy VSVSN, Parvin N, Vipin Raj K, Vanka K, Sen SS. C(sp3)–F, C(sp2)–F and C(sp3)–H bond activation at silicon(ii) centers. Chem Commun (Camb) 2017; 53:9850-9853. [DOI: 10.1039/c7cc05145j] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silylene, [PhC(NtBu)2SiN(SiMe3)2] (1) underwent C(sp3)–F, C(sp2)–F and C(sp3)–H bond activation with trifluoroacetophenone, octafluorotoluene, and acetophenone, respectively, under ambient conditions.
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Affiliation(s)
- V. S. V. S. N. Swamy
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Nasrina Parvin
- Indian Institute of Science Education and Research, Pune
- Pune 411008
- India
| | - K. Vipin Raj
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi-110020
- India
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi-110020
- India
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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