1
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Prinčič G, Omahen B, Jelen J, Gruden E, Tavčar G, Iskra J. Chloroimidazolium Deoxyfluorination Reagent with H 2F 3- Anion as a Sole Fluoride Source. J Org Chem 2024. [PMID: 39008626 DOI: 10.1021/acs.joc.4c00787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
In the study, we introduce an air-stable NHC-based deoxyfluorination reagent ImCl[H2F3], offering a promising avenue for deoxyfluorination across various substrates. Reagent efficiently fluorinates benzyl alcohols, carboxylic acids, and P(V) compounds without external fluoride sources. A mechanistic study reveals a two-step process involving benzyl chloride as an intermediate, shedding light on the two-step reaction pathway. The Hammet plot provides insights into reaction mechanisms with different substrates, enhancing our understanding of this versatile deoxyfluorination method.
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Affiliation(s)
- Griša Prinčič
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Blaž Omahen
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Jan Jelen
- Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, 1000Ljubljana, Slovenia
| | - Evelin Gruden
- Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, 1000Ljubljana, Slovenia
| | - Gašper Tavčar
- Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, 1000Ljubljana, Slovenia
| | - Jernej Iskra
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
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2
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Tung P, Mankad NP. Photochemical Synthesis of Acyl Fluorides Using Copper-Catalyzed Fluorocarbonylation of Alkyl Iodides. Org Lett 2024; 26:3299-3303. [PMID: 38546413 DOI: 10.1021/acs.orglett.4c00967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Acyl fluorides are important reagents due to their unique balance between reactivity and stability. Here, we report a copper-catalyzed carbonylative coupling strategy for synthesizing acyl fluorides under photoirradiation. Alkyl iodides were transformed in high yields into acyl fluorides by using a commercially available copper precatalyst (CuBr·SMe2) and a readily available fluoride salt (KF) at ambient temperature and mild CO pressure (6 atm) under blue light irradiation.
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Affiliation(s)
- Pinku Tung
- Department of Chemistry, University of Illinois Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Neal P Mankad
- Department of Chemistry, University of Illinois Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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3
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Garg A, Haswell A, Hopkinson MN. C-F Bond Insertion: An Emerging Strategy for Constructing Fluorinated Molecules. Chemistry 2024; 30:e202304229. [PMID: 38270496 DOI: 10.1002/chem.202304229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 01/26/2024]
Abstract
C-F Insertion reactions, where an organic fragment formally inserts into a carbon-fluorine bond in a substrate, are highly attractive, yet largely unexplored, methods to prepare valuable fluorinated molecules. The inherent strength of C-F bonds and the resulting need for a large thermodynamic driving force to initiate C-F cleavage often leads to sequestering of the released fluoride in an unreactive by-product. Recently, however, several groups have succeeded in overcoming this challenge, opening up the study of C-F insertion as an efficient and highly atom-economical approach to prepare fluorinated compounds. In this article, the recent breakthroughs are discussed focusing on the key conceptual advances that allowed for both C-F bond cleavage and subsequent incorporation of the released fluoride into the product.
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Affiliation(s)
- Arushi Garg
- School of Natural and Environmental Sciences, Newcastle University, Bedson Building, NE1 7RU, Newcastle Upon Tyne, UK
| | - Alex Haswell
- School of Natural and Environmental Sciences, Newcastle University, Bedson Building, NE1 7RU, Newcastle Upon Tyne, UK
| | - Matthew N Hopkinson
- School of Natural and Environmental Sciences, Newcastle University, Bedson Building, NE1 7RU, Newcastle Upon Tyne, UK
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4
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Lisboa AVRD, Duran-Camacho G, Ehrlacher AK, Lasky MR, Sanford MS. Deoxyfluorination of Carboxylic Acids via an In Situ Generated Trifluoromethoxide Salt. Org Lett 2023; 25:9025-9029. [PMID: 38064366 PMCID: PMC10774922 DOI: 10.1021/acs.orglett.3c03706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
An in situ generated pyridinium trifluoromethoxide salt (PyOCF3) is a highly effective deoxyfluorination reagent for the synthesis of acid fluorides. PyOCF3 is formed at room temperature from the reaction of 2,4-dinitro(trifluoromethoxy)benzene with 4-dimethylaminopyridine. PyOCF3 undergoes slow release of fluorophosgene and fluoride, which serve as the electrophile and nucleophile, respectively, for deoxyfluorination. A wide substrate scope and high functional group tolerance are demonstrated. Furthermore, the acid fluorides can be purified by filtration and telescoped to various known reactions.
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Affiliation(s)
- Al Vicente Riano D Lisboa
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Geraldo Duran-Camacho
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Annika K Ehrlacher
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthew R Lasky
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie S Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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5
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Cen M, Yang X, Zhang S, Gan L, Liu L, Chen T. Synthesis of acyl fluorides through deoxyfluorination of carboxylic acids. Org Biomol Chem 2023; 21:9372-9378. [PMID: 37975303 DOI: 10.1039/d3ob01557b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
A direct deoxyfluorination of carboxylic acids by utilizing inorganic potassium fluoride (KF) as a safe and inexpensive fluoride source has been developed. Both aryl carboxylic acids and cinnamyl carboxylic acids could be efficiently transformed into valuable acyl fluorides in moderate to high yields with good functional group tolerance. A scale-up reaction could be carried out smoothly under solvent-free conditions, which further demonstrated the practicality of this reaction in organic synthesis.
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Affiliation(s)
- Mengjie Cen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
| | - Xi Yang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
| | - Shanshan Zhang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
| | - Liguang Gan
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Fine Chemical, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, 570228, China.
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6
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Sheldon DJ, Parr JM, Crimmin MR. Room Temperature Defluorination of Poly(tetrafluoroethylene) by a Magnesium Reagent. J Am Chem Soc 2023; 145:10486-10490. [PMID: 37154713 DOI: 10.1021/jacs.3c02526] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Perfluoroalkyl substances (PFAS) are pervasive in the environment. The largest single use material within the PFAS compound class is poly(tetrafluoroethylene) (PTFE), a robust and chemically resistant polymer. Despite their widespread use and serious concerns about their role as pollutants, methods for repurposing PFAS are rare. Here we show that a nucleophilic magnesium reagent reacts with PTFE at room temperature, generating a molecular magnesium fluoride which is easily separated from the surface-modified polymer. The fluoride in turn can be used to transfer the fluorine atoms to a small array of compounds. This proof-of-concept study demonstrates that the atomic fluorine content of PTFE can be harvested and reused in chemical synthesis.
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Affiliation(s)
- Daniel J Sheldon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, U.K
| | - Joseph M Parr
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, U.K
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, U.K
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7
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Zou Z, Chang W, Zhang W, Ni S, Pan Y, Liang Y, Pan D, Wang Y. CuCF3 Mediated Deoxyfluorination of Redox-active Esters. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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8
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Bao L, Wang ZX, Chen XY. Photoinduced N-Heterocyclic Nitrenium-Catalyzed Single Electron Reduction of Acyl Fluorides for Phenanthridine Synthesis. Org Lett 2023; 25:565-568. [PMID: 36637257 DOI: 10.1021/acs.orglett.3c00049] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Acyl fluorides are versatile reagents in organic synthesis. However, there is no precedent to employ acyl fluorides as acyl radical precursors. We herein report an N-heterocyclic nitrenium iodide salt-catalyzed photoreduction of acyl fluorides to produce acyl radicals, which could react with 2-isocyanobiaryls to afford various carbonyl phenanthridines.
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Affiliation(s)
- Lei Bao
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, China.,Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province 256606, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences Beijing 100049, China.,Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou, Shandong Province 256606, China
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9
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Li W, Ye B, Yang J, Wang Y, Yang C, Pan Y, Tang H, Wang D, Li Y. A Single‐Atom Cobalt Catalyst for the Fluorination of Acyl Chlorides at Parts‐per‐Million Catalyst Loading. Angew Chem Int Ed Engl 2022; 61:e202209749. [DOI: 10.1002/anie.202209749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Wen‐Hao Li
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Bo‐Chao Ye
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin 541004 China
| | - Jiarui Yang
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Ye Wang
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Chang‐Jie Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin 541004 China
| | - Ying‐Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin 541004 China
| | - Hai‐Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin 541004 China
| | - Dingsheng Wang
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yadong Li
- Department of Chemistry Tsinghua University Beijing 100084 China
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10
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Li WH, Ye BC, Yang J, Wang Y, Yang CJ, Pan YM, Tang HT, Wang D, Li Y. A Single‐Atom Cobalt Catalyst for the Fluorination of Acyl Chlorides at Parts‐per‐Million Catalyst Loading. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Hao Li
- Tsinghua University Department of Chemistry CHINA
| | - Bo-Chao Ye
- Guangxi Normal University School of Chemistry and Pharmaceutical Sciences CHINA
| | - Jiarui Yang
- Tsinghua University Department of Chemistry CHINA
| | - Ye Wang
- Tsinghua University Department of Chemistry CHINA
| | - Chang-Jie Yang
- Guangxi Normal University School of Chemistry and Pharmaceutical Sciences CHINA
| | - Ying-Ming Pan
- Guangxi Normal University School of Chemistry and Pharmaceutical Sciences CHINA
| | - Hai-Tao Tang
- Guangxi Normal University School of Chemistry and Pharmaceutical Sciences CHINA
| | - Dingsheng Wang
- Tsinghua University Department of Chemistry Haidian 100084 Beijing CHINA
| | - Yadong Li
- Tsinghua University Department of Chemistry CHINA
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11
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Nishihara Y, Tian T, Chen Q, Li Z. Recent Advances in C–F Bond Activation of Acyl Fluorides Directed toward Catalytic Transformation by Transition Metals, N-Heterocyclic Carbenes, or Phosphines. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1845-3810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractNumerous studies on the activation of carbon–fluorine bonds have been reported in recent years. For example, acyl fluorides have been utilized as versatile reagents for acylation, arylation, and even fluorination. In this review, we focus on acyl fluorides as compounds with carbon–fluorine bonds, and highlight recent advances in strategies for the activation of their C–F bonds via transition-metal catalysis, N-heterocyclic carbene (NHCs) catalysis, organophosphine catalysis, and classical nucleophilic substitution reactions.1 Introduction2 Transition-Metal-Mediated C–F Bond Activation2.1 Acylation (Carbonyl-Retentive) Coupling Reactions2.2 Decarbonylative Reactions2.3 C–F Bond Activation by Other Transition Metals3 C–F Bond Activation by N-Heterocyclic Carbenes (NHCs)3.1 NHC-Catalyzed Cycloaddition of Acyl Fluorides3.2 NHC-Catalyzed Radical Functionalization of Acyl Fluorides3.3 NHC-Catalyzed Nucleophilic Fluorination of (Hetero)aromatics4 C–F Bond Activation by Phosphines4.1 Phosphine-Catalyzed Direct Activation of the C–F Bond of Acyl Fluorides4.2 Phosphine-Catalyzed Indirect Activation of the C–F Bond of Acyl Fluorides5 C–F Bond Activation by Classical Nucleophilic Substitution6 Miscellaneous Examples7 Summary and Perspective
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Affiliation(s)
- Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University
| | - Tian Tian
- Graduate School of Natural Science and Technology, Okayama University
| | - Qiang Chen
- Graduate School of Natural Science and Technology, Okayama University
| | - Zhiping Li
- Department of Chemistry, Renmin University of China
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12
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Sheldon DJ, Crimmin MR. Repurposing of F-gases: challenges and opportunities in fluorine chemistry. Chem Soc Rev 2022; 51:4977-4995. [PMID: 35616085 PMCID: PMC9207706 DOI: 10.1039/d1cs01072g] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Indexed: 11/24/2022]
Abstract
Fluorinated gases (F-gases) are routinely employed as refrigerants, blowing agents, and electrical insulators. These volatile compounds are potent greenhouse gases and consequently their release to the environment creates a significant contribution to global warming. This review article seeks to summarise: (i) the current applications of F-gases, (ii) the environmental issues caused by F-gases, (iii) current methods of destruction of F-gases and (iv) recent work in the field towards the chemical repurposing of F-gases. There is a great opportunity to tackle the environmental and sustainability issues created by F-gases by developing reactions that repurpose these molecules.
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Affiliation(s)
- Daniel J Sheldon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
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13
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Hattori H, Ogiwara Y, Sakai N. Formation, Characterization, and Reactivity of Acyl Palladium Complexes in Pd(OAc) 2/PCy 3-Catalyzed Transformation of Acyl Fluorides. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroyuki Hattori
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Yohei Ogiwara
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Norio Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
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14
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Wu FW, Mao YJ, Pu J, Li HL, Ye P, Xu ZY, Lou SJ, Xu DQ. Ni-catalysed deamidative fluorination of amides with electrophilic fluorinating reagents. Org Biomol Chem 2022; 20:4091-4095. [PMID: 35522070 DOI: 10.1039/d2ob00519k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We describe here a Ni-catalysed deamidative fluorination of diverse amides with electrophilic fluorinating reagents. Different types of amides including aromatic amides and olefinic amides were well compatible, affording the corresponding acyl fluorides in good to excellent yields.
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Affiliation(s)
- Feng-Wei Wu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Yang-Jie Mao
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Jun Pu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Huan-Le Li
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Peng Ye
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Zhen-Yuan Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Shao-Jie Lou
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
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15
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Liu Y, Zhou C, Jiang M, Arndtsen BA. Versatile Palladium-Catalyzed Approach to Acyl Fluorides and Carbonylations by Combining Visible Light- and Ligand-Driven Operations. J Am Chem Soc 2022; 144:9413-9420. [PMID: 35587132 DOI: 10.1021/jacs.2c01951] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the development of a general palladium-catalyzed carbonylative method to synthesize acyl fluorides from aryl, heteroaryl, alkyl, and functionalized organic halides. Mechanistic analysis suggests that the reaction proceeds via the synergistic combination of visible light photoexcitation of Pd(0) to induce oxidative addition with a ligand-favored reductive elimination. These together create a unidirectional catalytic cycle that is uninhibited by the classical effect of carbon monoxide coordination. Coupling the catalytic formation of acyl fluorides with their subsequent nucleophilic reactions has opened a method to perform carbonylation reactions with unprecedented breadth, including the assembly of highly functionalized carbonyl-containing products.
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Affiliation(s)
- Yi Liu
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Cuihan Zhou
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Meijing Jiang
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Bruce A Arndtsen
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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16
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Morgan PJ, Saunders GC, Macgregor SA, Marr AC, Licence P. Nucleophilic Fluorination Catalyzed by a Cyclometallated Rhodium Complex. Organometallics 2022; 41:883-891. [PMID: 35571260 PMCID: PMC9098193 DOI: 10.1021/acs.organomet.2c00052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 11/30/2022]
Abstract
![]()
Quantitative
catalytic nucleophilic fluorination of a range of
acyl chlorides to acyl fluorides was promoted by a cyclometallated
rhodium complex [(η5,κ2C-C5Me4CH2C6F5CH2NC3H2NMe)- RhCl] (1). 1 can be prepared in high yields from commercially available starting
materials using a one-pot method. The catalyst could be separated,
regenerated, and reused. Rapid quantitative fluorination generated
the fluoride analogue of the active pharmaceutical ingredient probenecid.
Infrared in situ monitoring verified the clean conversion of the substrates
to products. VTNA graphical kinetic analysis and DFT calculations
lead to a postulated reaction mechanism involving a nucleophilic Rh–F
bond.
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Affiliation(s)
- Patrick J. Morgan
- GSK Carbon Neutral Laboratory, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, U.K
| | | | - Stuart A. Macgregor
- School of Engineering and Physical Sciences, Heriot-Watt University, William H. Perkin Building, Edinburgh EH14 4AS, U.K
| | - Andrew C. Marr
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Belfast BT9 5AG, U.K
| | - Peter Licence
- GSK Carbon Neutral Laboratory, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, U.K
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17
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Yu X, Meng QY, Daniliuc CG, Studer A. Aroyl Fluorides as Bifunctional Reagents for Dearomatizing Fluoroaroylation of Benzofurans. J Am Chem Soc 2022; 144:7072-7079. [PMID: 35315651 PMCID: PMC9052760 DOI: 10.1021/jacs.2c01735] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The 2,3-dihydrobenzofuran scaffold is widely found in natural products and biologically active compounds. Herein, dearomatizing 2,3-fluoroaroylation of benzofurans with aroyl fluorides as bifunctional reagents to access 2,3-difunctionalized dihydrobenzofurans is reported. The reaction that occurs by cooperative NHC/photoredox catalysis provides 3-aroyl-2-fluoro-2,3-dihydrobenzofurans with moderate to good yield and high diastereoselectivity. Cascades proceed via radical/radical cross-coupling of a benzofuran radical cation generated in the photoredox catalysis cycle with a neutral ketyl radical formed through the NHC catalysis cycle. The redox-neutral transformation exhibits broad substrate scope and high functional group compatibility. With anhydrides as bifunctional reagents, dearomatizing aroyloxyacylation of benzofurans is achieved and the strategy can also be applied to N-acylated indoles to afford 3-aroyl-2-fluoro-dihydroindoles.
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Affiliation(s)
- Xiaoye Yu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
| | - Qing-Yuan Meng
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Laboratory of Molecular Recognition and Function, 100190 Beijing, China
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
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18
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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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19
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Sheldon DJ, Crimmin MR. Complete deconstruction of SF 6 by an aluminium(I) compound. Chem Commun (Camb) 2021; 57:7096-7099. [PMID: 34159971 PMCID: PMC8291285 DOI: 10.1039/d1cc02838c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The room-temperature activation of SF6, a potent greenhouse gas, is reported using a monovalent aluminium(i) reagent to form well-defined aluminium(iii) fluoride and aluminium(iii) sulfide products. New reactions have been developed to utilise the aluminium(iii) fluoride and aluminium(iii) sulfide as a nucleophilic source of F− and S2− for a range of electrophiles. The overall reaction sequence results in the net transfer of fluorine or sulfur atoms from an environmentally detrimental gas to useful organic products. The room-temperature activation of SF6, a potent greenhouse gas, is reported using a monovalent aluminium(i) reagent to form well-defined aluminium(iii) fluoride and aluminium(iii) sulfide products.![]()
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Affiliation(s)
- Daniel J Sheldon
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, London, W12 0BZ, UK.
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20
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Sakurai Y, Ikai K, Hayakawa K, Ogiwara Y, Sakai N. Palladium-Catalyzed Intramolecular Aromatic C–H Acylation of 2-Arylbenzoyl Fluorides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuka Sakurai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kana Ikai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kazuki Hayakawa
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yohei Ogiwara
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Norio Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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21
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Li H, Peng M, Lai Z, Ning L, Chen X, Zhang X, Wang P, Szostak R, Szostak M, An J. Acyl fluorides as direct precursors to fluoride ketyl radicals: reductive deuteration using SmI 2 and D 2O. Chem Commun (Camb) 2021; 57:5195-5198. [PMID: 33908475 DOI: 10.1039/d1cc01381e] [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
A highly chemoselective reductive deuteration of acyl fluorides to provide α,α-dideuterio alcohols with exquisite levels of deuterium incorporation was developed using SmI2 and D2O as the deuterium source. This method introduces acyl fluorides as attractive radical precursors for the generation of reactive acyl-type fluoride ketyls that should find widespread application in many synthetic strategies involving single electron transfer processes.
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Affiliation(s)
- Hengzhao Li
- Department of Nutrition and Health, China Agricultural University, Beijing 100193, China. and Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China
| | - Mengqi Peng
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China
| | - Zemin Lai
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China
| | - Lei Ning
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China
| | - Xingyue Chen
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China
| | - Xiaoxu Zhang
- Department of Nutrition and Health, China Agricultural University, Beijing 100193, China.
| | - Pengjie Wang
- Department of Nutrition and Health, China Agricultural University, Beijing 100193, China.
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, USA.
| | - Jie An
- Department of Nutrition and Health, China Agricultural University, Beijing 100193, China.
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22
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Liu S, Zhu L, Zhang T, Zhong K, Li SJ, Bai R, Lan Y. How Solvents Control the Chemoselectivity in Rh-Catalyzed Defluorinated [4 + 1] Annulation. Org Lett 2021; 23:1489-1494. [PMID: 33565315 DOI: 10.1021/acs.orglett.1c00223] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Density functional theory calculations have been performed to reveal the chemoselectivity of Rh-catalyzed chiral C-F cleavage and γ-site functionalization. We found that the chemoselectivity is controlled by β-F elimination in methanol solvent, leading to formation of the alkynylic product. In isobutyronitrile solvent, the chemoselectivity is controlled by the allene insertion step, where the fluoroalkenylic product can be observed. The difference can be explained by analysis of the explicit solvent models.
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Affiliation(s)
- Shihan Liu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China
| | - Tao Zhang
- Green Catalysis Center and College of Chemistry Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Kangbao Zhong
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China
| | - Shi-Jun Li
- Green Catalysis Center and College of Chemistry Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.,Green Catalysis Center and College of Chemistry Zhengzhou University, Zhengzhou, Henan 450001, China
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23
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Wang X, Wang F, Huang F, Ni C, Hu J. Deoxyfluorination of Carboxylic Acids with CpFluor: Access to Acyl Fluorides and Amides. Org Lett 2021; 23:1764-1768. [PMID: 33586447 DOI: 10.1021/acs.orglett.1c00190] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3,3-Difluoro-1,2-diphenylcyclopropene (CpFluor), a bench-stable fluorination reagent, has been developed in the deoxyfluorination of carboxylic acids to afford various acyl fluorides. This all-carbon-based fluorination reagent enabled the efficient transformation of (hetero)aryl, alkyl, alkenyl, and alkynyl carboxylic acids to the corresponding acyl fluorides under the neutral conditions. This deoxyfluorination method was featured by the synthesis of acyl fluorides with in-situ formed CpFluor, as well as the one-pot amidation reaction of carboxylic acids via in-situ formed acyl fluorides.
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Affiliation(s)
- Xiu Wang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Fei Wang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Fengfeng Huang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
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24
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Liang Y, Zhao Z, Taya A, Shibata N. Acyl Fluorides from Carboxylic Acids, Aldehydes, or Alcohols under Oxidative Fluorination. Org Lett 2021; 23:847-852. [PMID: 33464095 DOI: 10.1021/acs.orglett.0c04087] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We describe a novel reagent system to obtain acyl fluorides directly from three different functional group precursors: carboxylic acids, aldehydes, or alcohols. The transformation is achieved via a combination of trichloroisocyanuric acid and cesium fluoride, which facilitates the synthesis of various acyl fluorides in high yield (up to 99%). It can be applied to the late-stage functionalization of natural products and drug molecules that contain a carboxylic acid, an aldehyde, or an alcohol group.
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Affiliation(s)
- Yumeng Liang
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Zhengyu Zhao
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Akihito Taya
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.,Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua 321004, China
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25
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Le B, Wu H, Hu X, Zhou X, Guo Y, Chen QY, Liu C. Rapid synthesis of acyl fluorides from carboxylic acids with Cu(O2CCF2SO2F)2. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Song HX, Tian ZY, Xiao JC, Zhang CP. Tertiary-Amine-Initiated Synthesis of Acyl Fluorides from Carboxylic Acids and CF 3 SO 2 OCF 3. Chemistry 2020; 26:16261-16265. [PMID: 32954583 DOI: 10.1002/chem.202003756] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/16/2020] [Indexed: 01/18/2023]
Abstract
A convenient method for deoxyfluorination of aromatic and aliphatic carboxylic acids with CF3 SO2 OCF3 in the presence of a suitable base at room temperature has been developed. The reaction allows a straightforward access to a variety of acyl fluorides and proves that CF3 SO2 OCF3 is an effective deoxyfluorination reagent for carboxylic acids. The method features simplicity, expeditiousness, high efficiency, ease of handling, good functional group tolerance, a wide range of substrates, excellent yields of products, compatibility of many amine initiators, use of environmentally friendly reagents, and effortless removal of byproducts. This reaction represents the first utilization of trifluoromethyl trifluoromethanesulfonate as a fluorination reagent.
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Affiliation(s)
- Hai-Xia Song
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, P. R. China
| | - Ze-Yu Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, 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
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, P. R. China
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27
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Abstract
AbstractAcyl fluorides are valuable intermediates in organic synthesis. They are increasingly employed in peptide synthesis, in challenging esterification and amidation reactions or in transition-metal-catalyzed transformations. This review summarizes recent advances in their preparation.1 Introduction2 Nucleophilic Fluorination2.1 α-Fluoroamine Reagents2.2 Sulfur-Based Reagents2.3 Metal Catalysts2.4 Phosphorus-Based Reagents2.5 N,N′-Dicyclohexylcarbodiimide/HF·Pyridine2.6 Uranium Hexafluoride2.7 Bromine Trifluoride3 Radical Fluorination4 Conclusion
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28
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Fehér PP, Stirling A. Theoretical Study on the Formation of Ni(PR 3)(Aryl)F Complexes Observed in Ni-Catalyzed Decarbonylative C–C Coupling of Acyl Fluorides. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Péter Pál Fehér
- Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - András Stirling
- Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
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29
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Gonay M, Batisse C, Paquin JF. Synthesis of Acyl Fluorides from Carboxylic Acids Using NaF-Assisted Deoxofluorination with XtalFluor-E. J Org Chem 2020; 85:10253-10260. [PMID: 32691597 DOI: 10.1021/acs.joc.0c01377] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of acyl fluorides using the deoxofluorination reaction of carboxylic acids using XtalFluor-E is described. This transformation, assisted by a catalytic amount of NaF, occurs at room temperature in EtOAc, where XtalFluor-E behaves as the activating agent and the fluoride source. A wide range of acyl fluorides were obtained in moderate to excellent yields (36-99%) after a simple filtration on a pad of silica gel. We also demonstrated that sequential deoxofluorination/amidation was possible.
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Affiliation(s)
- Marie Gonay
- CCVC, PROTEO, Département de chimie, Université Laval, 1045 Avenue de la Médecine, Québec, Québec G1V 0A6, Canada
| | - Chloé Batisse
- CCVC, PROTEO, Département de chimie, Université Laval, 1045 Avenue de la Médecine, Québec, Québec G1V 0A6, Canada
| | - Jean-François Paquin
- CCVC, PROTEO, Département de chimie, Université Laval, 1045 Avenue de la Médecine, Québec, Québec G1V 0A6, Canada
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30
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Wang X, Wang Z, Ishida T, Nishihara Y. Methoxylation of Acyl Fluorides with Tris(2,4,6-trimethoxyphenyl)phosphine via C-OMe Bond Cleavage under Metal-Free Conditions. J Org Chem 2020; 85:7526-7533. [PMID: 32351110 DOI: 10.1021/acs.joc.0c00640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Acyl fluorides are subjected to methoxylation with tris(2,4,6-trimethoxyphenyl)phosphine (TMPP) to afford the corresponding methyl esters in good to excellent yields. This transformation is featured by C(sp2)-OMe bond cleavage under metal-free conditions. Unprecedented utilization of TMPP as a methoxylating agent realized the installation of an OMe group into the desired products.
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Affiliation(s)
- Xiu Wang
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Zhenhua Wang
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takumi Ishida
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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31
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Liang Y, Zhao Z, Shibata N. Pd-catalyzed fluoro-carbonylation of aryl, vinyl, and heteroaryl iodides using 2-(difluoromethoxy)-5-nitropyridine. Commun Chem 2020; 3:59. [PMID: 36703482 PMCID: PMC9814140 DOI: 10.1038/s42004-020-0304-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 04/16/2020] [Indexed: 01/29/2023] Open
Abstract
Acyl fluorides have recently gained a lot of attention as robust and versatile synthetic tools in synthetic chemistry. While several synthetic routes to acyl fluorides have been reported, a procedure involving direct insertion of the "fluoro-carbonyl" moiety using a single reagent has not yet been realized. Here we report the preparation of acyl fluorides by palladium-catalyzed fluoro-carbonylation of aryl, vinyl, and heteroaryl iodides using 2-(difluoromethoxy)-5-nitropyridine under CO-free conditions. 2-(difluoromethoxy)-5-nitropyridine is a stable, colorless solid that can be used as an alternative to the toxic gaseous formyl fluoride, which is commonly used under fluoride catalysis conditions. A wide variety of acyl fluorides are efficiently and safely obtained in high yield (up to 99%). A broad range of functional groups is tolerated under the optimized reaction conditions and the method can be applied to the late-stage fluoro-carbonylation of structurally complex Csp2-iodides, including bioactive derivatives, such as Fenofibrate, Isoxepac, and Tocopherol. Furthermore, the one-pot transformation of aryl-iodides, including drug-like molecules, into the corresponding amides by successive fluoro-carbonylation/amidation reactions, demonstrates the potential synthetic utility of this strategy.
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Affiliation(s)
- Yumeng Liang
- grid.47716.330000 0001 0656 7591Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555 Japan
| | - Zhengyu Zhao
- grid.47716.330000 0001 0656 7591Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555 Japan
| | - Norio Shibata
- grid.47716.330000 0001 0656 7591Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555 Japan ,grid.453534.00000 0001 2219 2654Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua, 321004 China
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32
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Morgan PJ, Hanson-Heine MWD, Thomas HP, Saunders GC, Marr AC, Licence P. C–F Bond Activation of a Perfluorinated Ligand Leading to Nucleophilic Fluorination of an Organic Electrophile. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00176] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick J. Morgan
- GSK Carbon Neutral Laboratory, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, United Kingdom
| | - Magnus W. D. Hanson-Heine
- GSK Carbon Neutral Laboratory, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, United Kingdom
| | - Hayden P. Thomas
- School of Science, University of Waikato, Hamilton 3240, New Zealand
| | | | - Andrew C. Marr
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Belfast BT9 5AG, United Kingdom
| | - Peter Licence
- GSK Carbon Neutral Laboratory, School of Chemistry, University of Nottingham, Nottingham NG7 2TU, United Kingdom
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33
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Chen Q, Fu L, Nishihara Y. Palladium/copper-cocatalyzed decarbonylative alkynylation of acyl fluorides with alkynylsilanes: synthesis of unsymmetrical diarylethynes. Chem Commun (Camb) 2020; 56:7977-7980. [DOI: 10.1039/d0cc03309j] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkynylation of acyl fluorides with alkynylsilanes via palladium/copper-cocatalysed carbon–fluorine bond cleavage and sequential decarbonylation, which provide an efficient route to various unsymmetrical diarylethynes, have been disclosed.
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Affiliation(s)
- Qiang Chen
- Graduate School of Natural Science and Technology
- Okayama University 3-1-1 Tsushimanaka, Kita-ku
- Okayama 700-8530
- Japan
| | - Liyan Fu
- Graduate School of Natural Science and Technology
- Okayama University 3-1-1 Tsushimanaka, Kita-ku
- Okayama 700-8530
- Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science
- Okayama University 3-1-1 Tsushimanaka, Kita-ku
- Okayama 700-8530
- Japan
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