1
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Yoshimura A, Zhdankin VV. Recent Progress in Synthetic Applications of Hypervalent Iodine(III) Reagents. Chem Rev 2024. [PMID: 39269928 DOI: 10.1021/acs.chemrev.4c00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
Hypervalent iodine(III) compounds have found wide application in modern organic chemistry as environmentally friendly reagents and catalysts. Hypervalent iodine reagents are commonly used in synthetically important halogenations, oxidations, aminations, heterocyclizations, and various oxidative functionalizations of organic substrates. Iodonium salts are important arylating reagents, while iodonium ylides and imides are excellent carbene and nitrene precursors. Various derivatives of benziodoxoles, such as azidobenziodoxoles, trifluoromethylbenziodoxoles, alkynylbenziodoxoles, and alkenylbenziodoxoles have found wide application as group transfer reagents in the presence of transition metal catalysts, under metal-free conditions, or using photocatalysts under photoirradiation conditions. Development of hypervalent iodine catalytic systems and discovery of highly enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important recent achievement in the field of hypervalent iodine chemistry. Chemical transformations promoted by hypervalent iodine in many cases are unique and cannot be performed by using any other common, non-iodine-based reagent. This review covers literature published mainly in the last 7-8 years, between 2016 and 2024.
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Affiliation(s)
- Akira Yoshimura
- Faculty of Pharmaceutical Sciences, Aomori University, 2-3-1 Kobata, Aomori 030-0943, Japan
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
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2
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Borrel J, Waser J. SOMOphilic alkyne vs radical-polar crossover approaches: The full story of the azido-alkynylation of alkenes. Beilstein J Org Chem 2024; 20:701-713. [PMID: 38590536 PMCID: PMC10999984 DOI: 10.3762/bjoc.20.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024] Open
Abstract
We report the detailed background for the discovery and development of the synthesis of homopropargylic azides by the azido-alkynylation of alkenes. Initially, a strategy involving SOMOphilic alkynes was adopted, but only resulted in a 29% yield of the desired product. By switching to a radical-polar crossover approach and after optimization, a high yield (72%) of the homopropargylic azide was reached. Full insights are given about the factors that were essential for the success of the optimization process.
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Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
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3
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Maas LM, Fasting C, Voßnacker P, Limberg N, Golz P, Müller C, Riedel S, Hopkinson MN. Catalyst-Free Trifluoromethoxylation of Silyl Enol Ethers and Allyl Silanes with Bis(trifluoromethyl)peroxide. Angew Chem Int Ed Engl 2024; 63:e202317770. [PMID: 38131450 DOI: 10.1002/anie.202317770] [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: 11/21/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
Radical trifluoromethoxylation is an attractive approach to prepare compounds featuring the important OCF3 group, however most existing methods have focused on aromatic substrates. Here, we report novel methodologies with alkenyl substrates employing bis(trifluoromethyl)peroxide (BTMP) as a practical and comparatively atom economical trifluoromethoxylating reagent. With silyl enol ether substrates, switching reaction solvent allows for the synthesis of either α-(trifluoromethoxy)ketone products or unprecedented alkenyl-OCF3 species. Furthermore, allyl silanes have been employed as substrates for the first time, affording allyl(trifluoromethyl)ether products in good yields. In each case, the methods operate at room temperature without large excesses of the alkene substrate while, in contrast to previous radical trifluoromethoxylation reactions, no catalyst, light or other activators are required.
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Affiliation(s)
- Lilian M Maas
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
- School of Natural and Environmental Sciences, Newcastle University Bedson Building, Newcastle upon Tyne, NE1 7RU, UK
| | - Carlo Fasting
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Patrick Voßnacker
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Niklas Limberg
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Paul Golz
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Carsten Müller
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Sebastian Riedel
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Matthew N Hopkinson
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
- School of Natural and Environmental Sciences, Newcastle University Bedson Building, Newcastle upon Tyne, NE1 7RU, UK
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4
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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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5
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Sihag M, Soni R, Rani N, Kinger M, Kumar Aneja D. Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment II. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2114236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Monika Sihag
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Rinku Soni
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Neha Rani
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Mayank Kinger
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Deepak Kumar Aneja
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
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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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Mironova IA, Kirsch SF, Zhdankin V, Yoshimura A, Yusubov MS. Hypervalent Iodine‐Mediated Azidation Reactions. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Irina A. Mironova
- Tomsk Polytechnic University: Nacional'nyj issledovatel'skij Tomskij politehniceskij universitet Chemistry RUSSIAN FEDERATION
| | - Stefan F. Kirsch
- Bergische Universität Wuppertal: Bergische Universitat Wuppertal Fakultät für Mathematik und Naturwissenschaften GERMANY
| | - Viktor Zhdankin
- University of Minnesota Duluth Chemistry 1039 University Dr 55812 Duluth UNITED STATES
| | - Akira Yoshimura
- Aomori University: Aomori Daigaku Department of Pharmacy JAPAN
| | - Mekhman S. Yusubov
- Tomsk Polytechnic University: Nacional'nyj issledovatel'skij Tomskij politehniceskij universitet Chemistry RUSSIAN FEDERATION
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8
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Rani N, Soni R, Sihag M, Kinger M, Aneja DK. Combined Approach of Hypervalent Iodine Reagents and Transition Metals in Organic Reactions. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Neha Rani
- Department of Chemistry Chaudhary Bansi Lal University Bhiwani-127021 Haryana India
| | - Rinku Soni
- Department of Chemistry Chaudhary Bansi Lal University Bhiwani-127021 Haryana India
| | - Monika Sihag
- Department of Chemistry Chaudhary Bansi Lal University Bhiwani-127021 Haryana India
| | - Mayank Kinger
- Department of Chemistry Chaudhary Bansi Lal University Bhiwani-127021 Haryana India
| | - Deepak K. Aneja
- Department of Chemistry Chaudhary Bansi Lal University Bhiwani-127021 Haryana India
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9
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Coppola GA, Pillitteri S, Van der Eycken EV, You SL, Sharma UK. Multicomponent reactions and photo/electrochemistry join forces: atom economy meets energy efficiency. Chem Soc Rev 2022; 51:2313-2382. [PMID: 35244107 DOI: 10.1039/d1cs00510c] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Visible-light photoredox catalysis has been regarded as an extremely powerful tool in organic chemistry, bringing the spotlight back to radical processes. The versatility of photocatalyzed reactions has already been demonstrated to be effective in providing alternative routes for cross-coupling as well as multicomponent reactions. The photocatalyst allows the generation of high-energy intermediates through light irradiation rather than using highly reactive reagents or harsh reaction conditions. In a similar vein, organic electrochemistry has experienced a fruitful renaissance as a tool for generating reactive intermediates without the need for any catalyst. Such milder approaches pose the basis toward higher selectivity and broader applicability. In photocatalyzed and electrochemical multicomponent reactions, the generation of the radical species acts as a starter of the cascade of events. This allows for diverse reactivity and the use of reagents is usually not covered by classical methods. Owing to the availability of cheaper and more standardized photo- and electrochemical reactors, as well as easily scalable flow-setups, it is not surprising that these two fields have become areas of increased research interest. Keeping these in view, this review is aimed at providing an overview of the synthetic approaches in the design of MCRs involving photoredox catalysis and/or electrochemical activation as a crucial step with particular focus on the choice of the difunctionalized reagent.
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Affiliation(s)
- Guglielmo A Coppola
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium.
| | - Serena Pillitteri
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium.
| | - Erik V Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium. .,Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russia
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Upendra K Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium.
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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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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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12
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Gurawa A, Kumar M, Kashyap S. Selective Azidooxygenation of Alkenes Enabled by Photo-induced Radical Transfer Using Aryl-λ 3-azidoiodane Species. ACS OMEGA 2021; 6:26623-26639. [PMID: 34661016 PMCID: PMC8515593 DOI: 10.1021/acsomega.1c03991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
The photolytic radical-induced vicinal azidooxygenation of synthetically important and diverse functionalized substrates including unactivated alkenes is reported. The photoredox-catalyst/additive-free protocol enables intermolecular oxyazidation by simultaneously incorporating two new functionalities; C-O and C-N across the C=C double bond in a selective manner. Mechanistic investigations reveal the intermediacy of the azidyl radical facilitated via the photolysis of λ3-azidoiodane species and cascade proceeding to generate an active carbon-centered radical. The late-stage transformations of azido- and oxy-moieties were amply highlighted by assembling high-value drug analogs and bioactive skeletons.
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13
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Chen F, Tang Y, Li X, Duan Y, Chen C, Zheng Y. Oxoammonium Salt‐Mediated Vicinal Oxyazidation of Alkenes with NaN
3
: Access to
β
‐Aminooxy Azides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fei Chen
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yu‐Ting Tang
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Xin‐Ru Li
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yan‐Yan Duan
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Chao‐Xing Chen
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yang Zheng
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
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14
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Li J, Yuan Y, Bao X, Sang T, Yang J, Huo C. Visible-Light-Induced Intermolecular Oxyimination of Alkenes. Org Lett 2021; 23:3712-3717. [PMID: 33843240 DOI: 10.1021/acs.orglett.1c01064] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An intermolecular vicinal O-N difunctionalization reaction of olefins with oxime esters through energy transfer catalysis has been developed.
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Affiliation(s)
- Jun Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Xiazhen Bao
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Tongzhi Sang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Jie Yang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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15
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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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16
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Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
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17
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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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18
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Li N, Xiong F, Gao K. Cobalt-Catalyzed Protodeboronation of Aryl and Vinyl Boronates. J Org Chem 2021; 86:1972-1979. [PMID: 33399463 DOI: 10.1021/acs.joc.0c02570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An efficient cobalt-based catalytic system for protodeboronation of various aryl and vinyl boronates is described. The reaction is capable of tolerating a wide range of functional groups. The reaction is also extended to deuterodeboronation with D2O, which provides a potential protocol for the synthesis of regiospecifically deuterated arenes and olefins.
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Affiliation(s)
- Ninglin Li
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
| | - Fuqiang Xiong
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
| | - Ke Gao
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
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19
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Takenaga N, Dohi T, China H, Kumar R. Azido, Cyano, and Nitrato Cyclic Hypervalent Iodine(III) Reagents in Heterocycle Synthesis. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-sr(k)5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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20
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Difunctionalization of Alkenes and Alkynes via Intermolecular Radical and Nucleophilic Additions. MOLECULES (BASEL, SWITZERLAND) 2020; 26:molecules26010105. [PMID: 33379397 PMCID: PMC7795514 DOI: 10.3390/molecules26010105] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/24/2020] [Accepted: 12/24/2020] [Indexed: 12/31/2022]
Abstract
Popular and readily available alkenes and alkynes are good substrates for the preparation of functionalized molecules through radical and/or ionic addition reactions. Difunctionalization is a topic of current interest due to its high efficiency, substrate versatility, and operational simplicity. Presented in this article are radical addition followed by oxidation and nucleophilic addition reactions for difunctionalization of alkenes or alkynes. The difunctionalization could be accomplished through 1,2-addition (vicinal) and 1,n-addition (distal or remote) if H-atom or group-transfer is involved in the reaction process. A wide range of moieties, such as alkyl (R), perfluoroalkyl (Rf), aryl (Ar), hydroxy (OH), alkoxy (OR), acetatic (O2CR), halogenic (X), amino (NR2), azido (N3), cyano (CN), as well as sulfur- and phosphorous-containing groups can be incorporated through the difunctionalization reactions. Radicals generated from peroxides or single electron transfer (SET) agents, under photoredox or electrochemical reactions are employed for the reactions.
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21
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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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22
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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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23
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Iodine(III) reagent (ABX—N3)-induced intermolecular anti-Markovnikov hydroazidation of unactivated alkenes. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9628-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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24
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Lee JW, Lee KN, Ngai MY. Synthesis of Tri- and Difluoromethoxylated Compounds by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:11171-11181. [PMID: 30943329 PMCID: PMC7001783 DOI: 10.1002/anie.201902243] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Indexed: 01/29/2023]
Abstract
Trifluoromethoxy (OCF3 ) and difluoromethoxy (OCF2 H) groups are fluorinated structural motifs that exhibit unique physicochemical characteristics. Incorporation of these substituents into organic molecules is a highly desirable approach used in medicinal chemistry and drug discovery processes to alter the properties of a parent compound. Recently, tri- and difluoromethyl ethers have received increasing attention and several innovative strategies to access these valuable functional groups have been developed. The focus of this Minireview is the use of visible-light photoredox catalysis in the synthesis of tri- and difluoromethyl ethers. Recent photocatalytic strategies for the formation of O-CF3 , C-OCF3, O-CF2 H, and C-OCF2 H bonds as well as other transformations leading to the construction of ORF groups are discussed herein.
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Affiliation(s)
- Johnny W Lee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Katarzyna N Lee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Ming-Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY, 11794, USA
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25
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Wu D, Cui SS, Lin Y, Li L, Yu W. Visible Light-Driven Azidation/Difunctionalization of Vinyl Arenes with Azidobenziodoxole under Copper Catalysis. J Org Chem 2019; 84:10978-10989. [DOI: 10.1021/acs.joc.9b01569] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Danhua Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Shuang-Shuang Cui
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Yajun Lin
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Lin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
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26
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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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27
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Lee JW, Lee KN, Ngai M. Synthesis of Tri‐ and Difluoromethoxylated Compounds by Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Johnny W. Lee
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryStony Brook University Stony Brook NY 11794 USA
| | - Katarzyna N. Lee
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryStony Brook University Stony Brook NY 11794 USA
| | - Ming‐Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug DiscoveryStony Brook University Stony Brook NY 11794 USA
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28
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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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29
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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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30
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31
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Wang J, Yu W. Anti‐Markovnikov Hydroazidation of Alkenes by Visible‐Light Photoredox Catalysis. Chemistry 2019; 25:3510-3514. [DOI: 10.1002/chem.201806371] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Juan‐Juan Wang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
| | - Wei Yu
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
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32
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33
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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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34
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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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35
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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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36
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Yang H, Wang F, Jiang X, Zhou Y, Xu X, Tang P. Silver-Promoted Oxidative Benzylic C-H Trifluoromethoxylation. Angew Chem Int Ed Engl 2018; 57:13266-13270. [PMID: 30085396 DOI: 10.1002/anie.201807144] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/20/2018] [Indexed: 11/08/2022]
Abstract
A silver-promoted oxidative benzylic C-H trifluoromethoxylation has been reported for the first time. With trifluoromethyl arylsulfonate as the trifluoromethoxylation reagent, various arenes, having diverse functional groups, undergo trifluoromethoxylation of their benzylic C-H bonds to form trifluoromethyl ethers under mild reaction conditions. In addition, the trifluoromethoxylation and the fluorination of methyl groups of electron-rich arenes have been achieved to prepare α-fluorobenzyl trifluoromethyl ethers in one step.
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Affiliation(s)
- Haodong Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Feng Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Xiaohuan Jiang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Yu Zhou
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiufang Xu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
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37
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Yang H, Wang F, Jiang X, Zhou Y, Xu X, Tang P. Silver‐Promoted Oxidative Benzylic C−H Trifluoromethoxylation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Haodong Yang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
| | - Feng Wang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
| | - Xiaohuan Jiang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
| | - Yu Zhou
- Department of ChemistryKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)College of ChemistryNankai University Tianjin 300071 China
| | - Xiufang Xu
- Department of ChemistryKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)College of ChemistryNankai University Tianjin 300071 China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of ChemistryNankai UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
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38
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Chaturvedi AK, Rastogi N. Visible light catalyzed synthesis of quinolines from (aza)-Morita–Baylis–Hillman adducts. Org Biomol Chem 2018; 16:8155-8159. [PMID: 30335122 DOI: 10.1039/c8ob02260g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A mild and efficient protocol for the synthesis of quinoline scaffolds from (aza)-MBH adducts under visible light catalysis has been established.
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Affiliation(s)
- Atul Kumar Chaturvedi
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Namrata Rastogi
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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39
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Zhang QW, Hartwig JF. Synthesis of heteroaromatic trifluoromethyl ethers with trifluoromethyl triflate as the source of the trifluoromethoxy group. Chem Commun (Camb) 2018; 54:10124-10127. [DOI: 10.1039/c8cc05084h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A series of nitrogen-heterocycles have been transformed to the corresponding trifluoromethyl and higher perfluoroalkyl ethers by the reaction of the N-oxides with trifluoromethyl triflate as a bifunctional reagent.
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Affiliation(s)
- Qing-Wei Zhang
- Department of Chemistry
- University of California
- Berkeley
- USA
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