1
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Yu Q, Zhou D, Yu P, Song C, Ze Tan, Li J. Silver-Catalyzed Decarboxylative Nitrooxylation of Aliphatic Carboxylic Acids. Org Lett 2024; 26:5856-5861. [PMID: 38950381 DOI: 10.1021/acs.orglett.4c02180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Here, we present a silver-catalyzed decarboxylative nitrooxylation via a radical-based approach. The substrate scope of this reaction prototype extends to nonactivated primary and secondary carboxylic acids. This protocol provides a practical method for the synthesis of an unprecedented family of organic nitrates and exhibits wide functional group compatibility. Preliminary mechanistic studies reveal that a high-valent silver(II) nitrate complex is a versatile NO3 resource pool, allowing for facile C-O bond formation.
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Affiliation(s)
- Qian Yu
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Donglin Zhou
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Pingping Yu
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Ze Tan
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Jiakun Li
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
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2
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Deng Z, Meng L, Bing X, Niu S, Zhang X, Peng J, Luan YX, Chen L, Tang P. Silver-Enabled Dearomative Trifluoromethoxylation of Indoles. J Am Chem Soc 2024; 146:2325-2332. [PMID: 38232384 DOI: 10.1021/jacs.3c11653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The only known method for the dearomative trifluoromethoxylation of indoles is preliminary, with only one substrate successfully undergoing the reaction. In this study, we not only developed a broadly applicable method for indole dearomative trifluoromethoxylation but also achieved divergent trifluoromethoxylation by fine-tuning the reaction conditions. Under optimized conditions, with a silver salt and an easily handled OCF3 reagent, various indoles smoothly underwent dearomatization to afford a diverse array of ditrifluoromethoxylated indolines in 50-84% isolated yields with up to 37:1 diastereoselectivity, and fluorinated trifluoromethoxylated indolines were obtained with exclusive trans selectivity. In addition, the reaction conditions were compatible with other heteroaromatic rings as well as styrene moieties.
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Affiliation(s)
- Zhijie Deng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Lingduan Meng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiao Bing
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shaoxiong Niu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaofeng Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Junqin Peng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yu-Xin Luan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Li Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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3
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Bo C, Chen F, Bu Q, Du ZH, Li M, Dai B, Liu N. Visible-Light-Driven Organocatalytic Alkoxylation of Benzylic C-H Bonds. J Org Chem 2023; 88:3532-3538. [PMID: 36881000 DOI: 10.1021/acs.joc.2c02743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
A variety of strategies for direct alkoxylation of the benzyl C-H bond have been developed toward the construction of benzyl ethers. The light-induced benzyl C-H bond alkoxylation provides an alternative strategy for the synthesis of these important intermediates. The photocatalyzed alkoxylation of the benzyl C-H bond has dominated by metal-catalyzed methods. Herein, we reported a light-driven organocatalytic approach for alkoxylation of the benzyl C-H bond by the use of 9,10-dibromoanthracene as a photocatalyst and employing N-fluorobenzenesulfonimide as an oxidant. This reaction proceeds at room temperature and is capable of converting a variety of alkyl biphenyl and coupling partners, including a variety of alcohol and carboxylic acid, as well as peroxide, to the desired products under 400 nm light irradiation.
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Affiliation(s)
- Chunbo Bo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Fei Chen
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Qingqing Bu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Zhi-Hong Du
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Min Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Ning Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
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4
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Chen LY, Pan PF, Lin JH, Jin CM, Xiao JC. Tf 2O as a CF 3 Source for the Synthesis of Trifluoromethoxylation Reagent nC 4F 9SO 3CF 3. J Org Chem 2023. [PMID: 36763542 DOI: 10.1021/acs.joc.2c03018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Described herein is the convenient synthesis of an efficient trifluoromethoxylation reagent, nC4F9SO3CF3, by using cheap and widely available reagents and without the need of any tedious column chromatography purification procedure.
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Affiliation(s)
- Ling-Ying Chen
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Peng-Fei Pan
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jin-Hong Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Chuan-Ming Jin
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, China
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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5
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Selective functionalization of benzylic C(sp3)–H bonds to synthesize complex molecules. Chem 2022. [DOI: 10.1016/j.chempr.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Barata‐Vallejo S, Bonesi SM, Postigo A. Trifluoromethoxylation Reactions of (Hetero) arenes, Olefinic Systems and Aliphatic Saturated Substrates. Chemistry 2022; 28:e202201776. [DOI: 10.1002/chem.202201776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Sebastian Barata‐Vallejo
- Departamento de Ciencias Químicas Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Junin 954 CP 1113 Buenos Aires Argentina
- Istituto per la Sintesi Organica e la Fotoreattività ISOF Consiglio Nazionale delle Ricerche Via P. Gobetti 101 40129 Bologna Italy
| | - Sergio M. Bonesi
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Ciudad Universitaria C1428EGA Buenos Aires Argentina
| | - Al Postigo
- Departamento de Ciencias Químicas Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Junin 954 CP 1113 Buenos Aires Argentina
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7
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Wang F, Chen J, Jia X, Zhuang D, Wan Z, Ma L, Li Z. Direct Benzylic C(sp 3)-O Coupling with Alcohol via Site-Selective C(sp 3)-H Cleavage at Room Temperature through a Remote Directing Group-Enabled Radical Relay Strategy. J Org Chem 2022; 87:10698-10709. [PMID: 35930467 DOI: 10.1021/acs.joc.2c00884] [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
Employing a low loading of the terminal oxidant, a remote directing group-enabled radical relay strategy for benzylic direct C(sp3)-H alkoxylation with alcohols at room temperature is developed. Satisfactory site-selectivity, chemoselectivity, and reaction scope are achieved under simple and mild conditions, and no ligand or additive is required. Mechanistic studies, ready conversions of the directing group, and other benzylic functionalizations currently under development in our laboratory further indicate the promising potentials of this remote directing group-enabled radical relay strategy.
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Affiliation(s)
- Fang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Xiaoqi Jia
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Dailin Zhuang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Zhenyang Wan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 61006, P. R. China
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8
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Golden DL, Suh SE, Stahl SS. Radical C(sp3)–H functionalization and cross-coupling reactions. Nat Rev Chem 2022; 6:405-427. [DOI: 10.1038/s41570-022-00388-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Logvinenko IG, Kondratov IS, Pridma SO, Tolmachova NA, Morev RN, Dolovanyuk VG, Boretskyi AL, Stepanyuk RO, Trofimchuk SA, Mück-Lichtenfeld C, Daniliuc CG, Haufe G. Synthesis and physical chemical properties of CF3O-containg secondary amines – perspective building blocks for Drug Discovery. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.109990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Abstract
We disclose a silver-catalyzed trifluoromethoxylation of N-tosyl aziridines with trifluoromethyl arylsulfonate. The protocol is characterized by its mild conditions, simple operations, and good chemo- and regioselectivity. In addition, the trifluoromethoxylation of trisubstituted aziridines could construct C-OCF3 quaternary centers exclusively, which is quite rare. This method unlocks a new catalytic blueprint for accessing β-trifluoromethoxylated amines, which could be important building blocks in synthetic chemistry.
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Affiliation(s)
- Jingrui Xin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiangyu Deng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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11
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Chen J, Wang F, Huang Y, Jia X, Zhuang D, Wan Z, Li Z. Remote carbamate-directed site-selective benzylic C–H oxygenation via synergistic copper/TEMPO catalysis at room temperature. Org Chem Front 2022. [DOI: 10.1039/d2qo00435f] [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
A benzylic C(sp3)–H oxygenation with water at room temperature through a ligand- and additive-free synergistic copper/TEMPO-catalysed radical relay pathway and a remote directing strategy is described.
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Affiliation(s)
- Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanping Huang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Engineering Experimental Teaching Centre, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoqi Jia
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Dailin Zhuang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhenyang Wan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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12
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Abstract
This review provides a short summary of the traditional methods for synthesis of CF3-O-containing compounds, followed by a critical overview of known trifluoromethoxylating reagents, focusing on their preparation, synthetic generality and limitations.
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13
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Zuo L, Ma P, Liu T, Chen X, Lavroff RH, Chen WP, Houk KN, Guo W. Ambiphilic Reactivity of Vinyl Pd-Oxyallyl for Expeditious Construction of Highly Functionalized Cyclooctanoids. Org Lett 2021; 23:7330-7335. [PMID: 34505511 DOI: 10.1021/acs.orglett.1c02401] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the catalytic generation of a vinyl Pd-oxyallyl that dimerizes regiospecifically to form highly functionalized nonbridged cyclooctanoids. Such compounds are otherwise synthetically challenging, but highly useful in synthesis. This vinyl Pd-oxyallyl species demonstrates both electrophilic and nucleophilic properties. DFT calculations elucidate the mechanism and the origins of the chemoselective cyclooctanoid formation.
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Affiliation(s)
- Linhong Zuo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
| | - Pengchen Ma
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Teng Liu
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Robert H Lavroff
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Wei-Peng Chen
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Wusheng Guo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an 710045, China.,School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
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14
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Lu Z, Kumon T, Hammond GB, Umemoto T. Trifluoromethyl Nonaflate: A Practical Trifluoromethoxylating Reagent and its Application to the Regio‐ and Stereoselective Synthesis of Trifluoromethoxylated Alkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhichao Lu
- Department of Chemistry University of Louisville Louisville KY 40292 USA
| | - Tatsuya Kumon
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Gerald B. Hammond
- Department of Chemistry University of Louisville Louisville KY 40292 USA
| | - Teruo Umemoto
- Department of Chemistry University of Louisville Louisville KY 40292 USA
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15
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Lu Z, Kumon T, Hammond GB, Umemoto T. Trifluoromethyl Nonaflate: A Practical Trifluoromethoxylating Reagent and its Application to the Regio- and Stereoselective Synthesis of Trifluoromethoxylated Alkenes. Angew Chem Int Ed Engl 2021; 60:16171-16177. [PMID: 34010513 PMCID: PMC8260458 DOI: 10.1002/anie.202104975] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Indexed: 01/18/2023]
Abstract
The trifluoromethoxy group has elicited much interest among drug and agrochemical discovery teams because of its unique properties. We developed trifluoromethyl nonafluorobutanesulfonate (nonaflate), TFNf, an easy-to-handle, bench-stable, reactive, and scalable trifluoromethoxylating reagent. TFNf is easily and safely prepared in a simple process in large scale and the nonaflyl part of TFNf can easily be recovered as nonaflyl fluoride after usage and recycled. The synthetic potency of TFNf was showcased with the underexplored synthesis of various trifluoromethoxylated alkenes, through a high regio- and stereoselective hydro(halo)trifluoromethoxylation of alkyne derivatives such as haloalkynes, alkynyl esters, and alkynyl sulfones. The synthetic merits of TFNf were further underscored with a high-yielding and smooth nucleophilic trifluoromethoxylation of alkyl triflates/bromides and primary/secondary alcohols.
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Affiliation(s)
- Zhichao Lu
- Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA
| | - Tatsuya Kumon
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA
| | - Teruo Umemoto
- Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA
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16
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Maeda B, Sakakibara Y, Murakami K, Itami K. Photoredox-Catalyzed Benzylic Esterification via Radical-Polar Crossover. Org Lett 2021; 23:5113-5117. [PMID: 34132549 DOI: 10.1021/acs.orglett.1c01645] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Photoredox-catalyzed C-O bond formation reactions are reported. The decarboxylative esterification reaction allows the conversion of a variety of arylacetic acids into the corresponding benzyl carboxylates. Furthermore, the use of (diacetoxyiodo)benzene allows the conversion of the benzylic C-H bond through hydrogen atom transfer. The reactions were applied to the divergent transformation of pharmaceuticals via decarboxylative or C-H esterification reactions.
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Affiliation(s)
- Bumpei Maeda
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Department of Chemistry, School of Science, Kwansei Gakuin University, 2-1 Gakuin, Sanda, Hyogo 669-1337, Japan
| | - Yota Sakakibara
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kei Murakami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Department of Chemistry, School of Science, Kwansei Gakuin University, 2-1 Gakuin, Sanda, Hyogo 669-1337, Japan
- Japanese Science and Technology Agency (JST)-PRESTO, 7 Gobancho, Chiyoda, Tokyo 102-0076 Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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17
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Saiter J, Guérin T, Donnard M, Panossian A, Hanquet G, Leroux FR. Direct Trifluoromethoxylation without OCF
3
‐Carrier through In Situ Generation of Fluorophosgene. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jérémy Saiter
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
| | - Thomas Guérin
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
| | - Morgan Donnard
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
| | - Armen Panossian
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
| | - Gilles Hanquet
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
| | - Frédéric R. Leroux
- Université de Strasbourg, Université de Haute-Alsace CNRS, UMR 7042-LIMA, ECPM 67000 Strasbourg France
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18
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Wang F, Guo Y, Zhang Y, Tang P. Silver-Catalyzed Dibromotrifluoromethoxylation of Terminal Alkynes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00090] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | - Pingping Tang
- 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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Jiang X, Tang P. Recent Advances of Trifluoromethoxylation Reactions Using
TFMS
and
TFBO. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000465] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaohuan Jiang
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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20
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Radhika S, Abdulla CMA, Aneeja T, Anilkumar G. Silver-catalysed C–H bond activation: a recent review. NEW J CHEM 2021. [DOI: 10.1039/d1nj02156g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Transition metal catalysed C–H activations are efficient, simple, mild, cost-effective and stereoselective, and many of them are environmentally sustainable transformations.
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Affiliation(s)
- Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - C. M. Afsina Abdulla
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
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21
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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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22
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Huang S, Xia Z, Lu K, Lu H, Tung C, Xu Z. S‐Trifluoroethyl
Benzenesulfonothioate: A
Bench‐Stable
Reagent for Electrophilic Trifluoroethylthiolation
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000279] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shuai Huang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University Jinan Shandong 250100 China
| | - Ziheng Xia
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University Jinan Shandong 250100 China
| | - Kui Lu
- Land Surveying and Mapping Institute of Shandong Province Jinan Shandong 250013 China
| | - Haifeng Lu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University Jinan Shandong 250100 China
| | - Chen‐Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University Jinan Shandong 250100 China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University Jinan Shandong 250100 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
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23
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Abstract
A silver-catalyzed trifluoromethoxylation of alkyl trifluoroborates with trifluoromethyl arylsulfonate as the trifluoromethoxylation reagent has been reported for the first time. This reaction is performed under mild reaction conditions and has wide functional group compatibility. In addition, the mechanism of this site-specific trifluoromethoxylation is proposed as a radical pathway.
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Affiliation(s)
- Xiaohuan Jiang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
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24
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Selective C-H trifluoromethoxylation of (hetero)arenes as limiting reagent. Nat Commun 2020; 11:2569. [PMID: 32444828 PMCID: PMC7244481 DOI: 10.1038/s41467-020-16451-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 05/04/2020] [Indexed: 02/01/2023] Open
Abstract
Methods for direct C-H trifluoromethoxylation of arenes and heteroarenes are rare, despite the importance of trifluoromethoxylated compounds for pharmaceuticals, agrochemicals, and material sciences. Especially selective C-H trifluoromethoxylation of pyridines remains a formidable challenge. Here we show a general late-stage C-H trifluoromethoxylation of arenes and heteroarenes as limiting reagent with trifluoromethoxide anion. The reaction is mediated by silver salts under mild reaction conditions, exhibiting broad substrate scope and wide functional-group compatibility. In addition, ortho-position selective C-H trifluoromethoxylation of pyridines is observed. The method is not only applicable to the gram-scale synthesis of trifluoromethoxylated products but also allows efficient late-stage C-H trifluoromethoxylation of marketed small-molecule drugs, common pharmacophores and natural products. Selective C-H trifluoromethoxylation of pyridines remains a formidable synthetic challenge. Here, the authors report a silver-mediated late-stage C-H trifluoromethoxylation of arenes and heteroarenes as limiting reagents with trifluoromethoxide anion.
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25
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Synthesis, physico-chemical properties and microsomal stability of compounds bearing aliphatic trifluoromethoxy group. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109461] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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26
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Hu H, Chen SJ, Mandal M, Pratik SM, Buss JA, Krska SW, Cramer CJ, Stahl SS. Copper-catalysed benzylic C-H coupling with alcohols via radical relay enabled by redox buffering. Nat Catal 2020; 3:358-367. [PMID: 32368720 PMCID: PMC7197765 DOI: 10.1038/s41929-020-0425-1] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cross-coupling reactions enable rapid, convergent synthesis of diverse molecules and provide the foundation for modern chemical synthesis. The most widely used methods employ sp2-hybridized coupling partners, such as aryl halides or related pre-functionalized substrates. Here, we demonstrate copper-catalysed oxidative cross coupling of benzylic C–H bonds with alcohols to afford benzyl ethers, enabled by a redox-buffering strategy that maintains the activity of the copper catalyst throughout the reaction. The reactions employ the C–H substrate as the limiting reagent and exhibit broad scope with respect to both coupling partners. This approach to direct site-selective functionalization of C(sp3)–H bonds provides the basis for efficient three-dimensional diversification of organic molecules and should find widespread utility in organic synthesis, particularly for medicinal chemistry applications.
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Affiliation(s)
- Huayou Hu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, USA.,These authors contribute equally: Si-Jie Chen and Huayou Hu.,Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, Jiangsu Province, P. R. China
| | - Si-Jie Chen
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, USA.,These authors contribute equally: Si-Jie Chen and Huayou Hu
| | - Mukunda Mandal
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA
| | - Saied Md Pratik
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA
| | - Joshua A Buss
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, USA
| | - Shane W Krska
- High-Throughput Experimentation and Lead Discovery Capabilities, Merck & Co., Inc., Kenilworth, NJ, USA
| | - Christopher J Cramer
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, MN, USA
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, USA
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27
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Newton JJ, Jelier BJ, Meanwell M, Martin RE, Britton R, Friesen CM. Quaternary Ammonium Trifluoromethoxide Salts as Stable Sources of Nucleophilic OCF 3. Org Lett 2020; 22:1785-1790. [PMID: 32053386 DOI: 10.1021/acs.orglett.0c00099] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of nucleophilic tertiary amines with trifluoromethyl and pentafluoroethyl methyl ethers provides quaternary ammonium trifluoromethoxide (NR4OCF3) and pentafluoroethoxide (NR4OCF2CF3) salts, respectively, in good yields. The new trifluoromethoxide salts disclosed herein are uniquely stable for extended periods of time in both the solid state and in solution, which complements contemporary reagents. Here we describe the preparation of a range of NR4OCF3 salts, their long-term stability, and utility in substitution reactions.
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Affiliation(s)
- Josiah J Newton
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6.,Department of Chemistry, Trinity Western University, Langley, British Columbia Canada, V2Y 1Y1
| | - Benson J Jelier
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
| | - Michael Meanwell
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
| | - Rainer E Martin
- Medicinal Chemistry, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Robert Britton
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
| | - Chadron M Friesen
- Department of Chemistry, Trinity Western University, Langley, British Columbia Canada, V2Y 1Y1
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28
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Turksoy A, Scattolin T, Bouayad-Gervais S, Schoenebeck F. Facile Access to AgOCF 3 and Its New Applications as a Reservoir for OCF 2 for the Direct Synthesis of N-CF 3 , Aryl or Alkyl Carbamoyl Fluorides. Chemistry 2020; 26:2183-2186. [PMID: 31922296 DOI: 10.1002/chem.202000116] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Indexed: 12/11/2022]
Abstract
The development of innovative fluorination strategies is greatly dependent also on the availability, safety and practicability of available fluorinating reagents. We herein show a straightforward and quantitative strategy for the preparation of valuable AgOCF3 at room temperature and showcase its performance in trifluoromethoxylations or as reservoir for O=CF2 . This enabled the direct, practical and safe synthesis of valuable N-alkyl/aryl and N-CF3 carbamoyl fluorides from secondary amines and isothiocyanides, respectively. Our mechanistic data indicate that AgOCF3 does not liberate O=CF2 until it is activated by a nucleophilic co-reagent, reinforcing the stability of the salt under our new preparation strategy.
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Affiliation(s)
- Abdurrahman Turksoy
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Thomas Scattolin
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Samir Bouayad-Gervais
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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29
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Huang Q, Tang P. Silver-Mediated Intermolecular Iodotrifluoromethoxylation of Alkenes. J Org Chem 2020; 85:2512-2519. [PMID: 31927888 DOI: 10.1021/acs.joc.9b03206] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
For the first time, intermolecular iodotrifluoromethoxylation between alkenes and NIS with AgF as the catalyst and TFMS as the trifluoromethoxylation reagent has been explored. The practical processes, good functional group tolerance, and easy scalability make this reaction an attractive protocol for the synthesis of trifluoromethoxylated iodides, which can be readily used for further synthetic manipulation.
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Affiliation(s)
- Qingyun Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
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30
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Xu W, Wang W, Liu T, Xie J, Zhu C. Late-stage trifluoromethylthiolation of benzylic C-H bonds. Nat Commun 2019; 10:4867. [PMID: 31653853 PMCID: PMC6814834 DOI: 10.1038/s41467-019-12844-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 10/04/2019] [Indexed: 11/09/2022] Open
Abstract
The benzylic positions in drugs are sites that readily react with cytochrome P450 oxidases via single-electron oxidation. New synthetic methodologies to incorporate a fluoroalkyl group at the benzylic site are continually being developed, and in this paper, we report a metal-free and site-selective organophotoredox-catalyzed trifluoromethylthiolation of benzylic C-H bonds for a wide variety of alkyl arenes and heteroarenes. The precise and predictive regioselectivity among various C(sp3)-H bonds originates from an inner-sphere benzylic radical initiation mechanism, and avoids the use of external oxidants or hydrogen atom abstractors. Its practicality stems from the trifluoromethylthiolation of a series of drugs and complex organic molecules, which is overwhelmingly selective for benzyl groups. This operationally simple protocol can provide a general and practical access to structurally diverse benzylic trifluoromethyl sulfides produced from ubiquitous benzylic C-H bonds. Large scale trifluoromethylthiolation can be achieved with continuous flow photoredox technology. Fluoroalkylation of C-H bonds is a class of reaction highly sought after in medicinal chemistry. Here, the authors report a regioselective organophotoredox-catalyzed, trifluoromethylthiolation of benzylic C-H bonds for a wide variety of alkyl (hetero)arenes, and demonstrate its utility in continuous flow.
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Affiliation(s)
- Wentao Xu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Wenliang Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Tao Liu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China.
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 200032, Shanghai, China.
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31
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Yu W, Wu W, Jiang H. Copper‐Catalyzed Benzylic C—H Functionalization, Oxidation and Cyclization of Methylarenes: Direct Access to 2‐Arylbenzothiazoles. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Wentao Yu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Wanqing Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
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32
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Yang YM, Yao JF, Yan W, Luo Z, Tang ZY. Silver-Mediated Trifluoromethoxylation of (Hetero)aryldiazonium Tetrafluoroborates. Org Lett 2019; 21:8003-8007. [PMID: 31524411 DOI: 10.1021/acs.orglett.9b03000] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Here we report a silver-mediated trifluoromethoxylation of (hetero)aryldiazonium tetrafluoroborates by converting an aromatic amino group into an OCF3 group. This method, which can be considered to be a trifluoromethoxylation variation of the classic Sandmeyer-type reaction, uses readily available aryl and heteroaromatic amines as starting materials and AgOCF3 as trifluoromethoxylating reagents. The broad substrate scope and simple, mild reaction condition made this transformation a valuable method in constructing aryl-OCF3 bonds.
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Affiliation(s)
- Yu-Ming Yang
- School of Chemical Engineering and Technology , Sun Yat-sen University , Zhuhai 519082 , China.,College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
| | - Jian-Fei Yao
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
| | - Wei Yan
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
| | - Zhuangzhu Luo
- School of Chemical Engineering and Technology , Sun Yat-sen University , Zhuhai 519082 , China
| | - Zhen-Yu Tang
- School of Chemical Engineering and Technology , Sun Yat-sen University , Zhuhai 519082 , China.,College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
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33
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Liang Y, Maeno M, Zhao Z, Shibata N. Enantioselective Benzylation and Allylation of α-Trifluoromethoxy Indanones under Phase-Transfer Catalysis. Molecules 2019; 24:E2774. [PMID: 31366139 PMCID: PMC6696116 DOI: 10.3390/molecules24152774] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 11/16/2022] Open
Abstract
The organo-catalyzed enantioselective benzylation reaction of α-trifluoromethoxy indanones afforded α-benzyl-α-trifluoromethoxy indanones with a tetrasubstituted stereogenic carbon center in excellent yield with moderate enantioselectivity (up to 57% ee). Cinchona alkaloid-based chiral phase transfer catalysts were found to be effective for this transformation, and both enantiomers of α-benzyl-α-trifluoromethoxy indanones were accessed, depended on the use of cinchonidine and cinchonine-derived catalyst. The method was extended to the enantioselective allylation reaction of α-trifluoromethoxy indanones to give the allylation products in moderate yield with good enantioselectivity (up to 76% ee).
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Affiliation(s)
- Yumeng Liang
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Mayaka Maeno
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Zhengyu Zhao
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, 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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34
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Song H, Han Z, Zhang C. Concise and Additive‐Free Click Reactions between Amines and CF3SO3CF3. Chemistry 2019; 25:10907-10912. [DOI: 10.1002/chem.201901865] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/04/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Hai‐Xia Song
- School of ChemistryChemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 P.R. China
| | - Zhou‐Zhou Han
- School of ChemistryChemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 P.R. China
| | - Cheng‐Pan Zhang
- School of ChemistryChemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 P.R. China
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35
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Yang S, Chen M, Tang P. Visible‐Light Photoredox‐Catalyzed and Copper‐Promoted Trifluoromethoxylation of Arenediazonium Tetrafluoroborates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901447] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shaoqiang Yang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Miao Chen
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
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36
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Yang S, Chen M, Tang P. Visible-Light Photoredox-Catalyzed and Copper-Promoted Trifluoromethoxylation of Arenediazonium Tetrafluoroborates. Angew Chem Int Ed Engl 2019; 58:7840-7844. [PMID: 30964599 DOI: 10.1002/anie.201901447] [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: 02/01/2019] [Indexed: 01/16/2023]
Abstract
We report the development of photoredox-catalyzed and copper-promoted trifluoromethoxylation of arenediazonium tetrafluoroborates, with trifluoromethyl arylsulfonate (TFMS) as the trifluoromethoxylation reagent. This new method takes advantage of visible-light photoredox catalysis to generate the aryl radical under mild conditions, combined with copper-promoted selective trifluoromethoxylation. The reaction is scalable, tolerates a wide range of functional groups, and proceeds regioselectively under mild reaction conditions. Furthermore, mechanistic studies suggested that a Cs[Cu(OCF3 )2 ] intermediate might be generated during the reaction.
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Affiliation(s)
- Shaoqiang Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Miao Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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37
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38
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Abstract
The first example of silver-mediated phosphine-promoted methoxylation of aryl C(sp2)–H bonds with the commercially available reagent for the preparation of alkyl aryl ethers has been developed. This protocol is characterized by mild reaction conditions, broad substrate scope, and high regioselectivity.
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39
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Wang F, Xu P, Cong F, Tang P. Silver-mediated oxidative functionalization of alkylsilanes. Chem Sci 2018; 9:8836-8841. [PMID: 30627401 PMCID: PMC6296296 DOI: 10.1039/c8sc03730b] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/22/2018] [Indexed: 11/21/2022] Open
Abstract
A general approach to the functionalization of aliphatic C-Si bonds in the presence of silver salts and oxidants has been reported. This strategy encompasses a range of valuable C-Si transformations, including the direct conversions of a C-Si bond to C-OCF3, C-OBz, C-OCOCF3, C-SCF3, C-SCN, and C-N3 bonds. Among them, trifluoromethoxylation of alkylsilanes is reported for the first time. In addition, mechanistic studies indicate that this reaction may proceed through a radical mechanism.
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Affiliation(s)
- Feng Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin 300071 , China .
| | - Peng Xu
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin 300071 , China .
| | - Fei Cong
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin 300071 , China .
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin 300071 , China .
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40
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Abstract
Trifluoromethoxy (OCF3) group exhibits unique properties, which render it a highly desirable structural motif in life and materials sciences. The numbers of newly synthesized trifluoromethyl ethers are booming as new synthetic methods are constantly being developed to access these valuable compounds. This Review summarizes recent catalytic approaches towards preparation of trifluoromethyl ethers. Alkene, allylic, benzylic, and aryl trifluoromethoxylation reactions are discussed herein.
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Affiliation(s)
- Katarzyna N. Lee
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Johnny W. Lee
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Ming-Yu Ngai
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
- Institute of Chemical Biology and Drug Discovery, Stony Brook University Stony Brook, NY 11794-3400, USA
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41
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Abstract
A catalytic ring-opening reaction of epoxides by nucleophilic trifluoromethoxylation of trifluoromethyl arylsulfonate has been developed based on the use of a cobalt catalyst. This reaction provides an efficient, simple route for directly construction of a wide range of vicinal trifluoromethoxyhydrins under mild conditions. In addition, this method can convert terminal epoxides into target products with good chemo- and regioselectivity.
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Affiliation(s)
- Jie Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Yongliang Wei
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , China
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