51
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Sahoo SR, Sarkar D. Gram scale synthesis of alpha-cyanoalkylboronic esters via direct B–B and C–N bond cleavage. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1800743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Sushree Ranjan Sahoo
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
| | - Debayan Sarkar
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
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52
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Xia A, Lv P, Xie X, Liu Y. Nickel-Catalyzed Cyanation of Unactivated Alkyl Sulfonates with Zn(CN) 2. Org Lett 2020; 22:7842-7847. [PMID: 33006476 DOI: 10.1021/acs.orglett.0c02722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyanation of unactivated primary and secondary alkyl mesylates with Zn(CN)2 catalyzed by nickel has been developed. The reaction provides an efficient route for the synthesis of alkyl nitriles with wide substrate scope, good functional group tolerance, and compatibility with heterocyclic compounds. Mechanistic studies indicate that alkyl iodide generated in situ serves as the reactive intermediate and the gradual release of alkyl iodide is crucial for the success of the reaction.
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Affiliation(s)
- Aiyou Xia
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Peizhuo Lv
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Xin Xie
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
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53
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Zhang Q, Li X, Zhang W, Ni S, Wang Y, Pan Y. Decarboxylative Borylation of Stabilized and Activated Carbon Radicals. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Xiaojuan Li
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Weigang Zhang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Shengyang Ni
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
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54
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Su W, Qiao RX, Jiang YY, Zhen XL, Tian X, Han JR, Fan SM, Cheng Q, Liu S. Ligand-Free Iron-Catalyzed Regioselectivity-Controlled Hydroboration of Aliphatic Terminal Alkenes. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02731] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wei Su
- School of Science, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Rui-Xiao Qiao
- Hebei Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273100, China
| | - Xiao-Li Zhen
- School of Science, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Xia Tian
- School of Science, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Jian-Rong Han
- School of Science, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Shi-Ming Fan
- Hebei Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Qiushi Cheng
- School of Science, Hebei University of Science and Technology, Shijiazhuang 050022, China
| | - Shouxin Liu
- Hebei Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science and Technology, Shijiazhuang 050022, China
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55
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Mohite AR, Phatake RS, Dubey P, Agbaria M, Shames AI, Lemcoff NG, Reany O. Thiourea-Mediated Halogenation of Alcohols. J Org Chem 2020; 85:12901-12911. [DOI: 10.1021/acs.joc.0c01431] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Amar R. Mohite
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ravindra S. Phatake
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Pooja Dubey
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Mohamed Agbaria
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexander I. Shames
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - N. Gabriel Lemcoff
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ofer Reany
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
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56
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Sato Y, Nakamura K, Yabushita K, Nagao K, Ohmiya H. Tertiary Alkylations of Aldehydes, Ketones or Imines Using Benzylic Organoboronates and a Base Catalyst. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200122] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yukiya Sato
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Kei Nakamura
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Kenya Yabushita
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Kazunori Nagao
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
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57
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Li J, Wang H, Qiu Z, Huang CY, Li CJ. Metal-Free Direct Deoxygenative Borylation of Aldehydes and Ketones. J Am Chem Soc 2020; 142:13011-13020. [DOI: 10.1021/jacs.0c03813] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jianbin Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montreal, Quebec H3A 0B8, Canada
| | - Haining Wang
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montreal, Quebec H3A 0B8, Canada
| | - Zihang Qiu
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montreal, Quebec H3A 0B8, Canada
| | - Chia-Yu Huang
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montreal, Quebec H3A 0B8, Canada
| | - Chao-Jun Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montreal, Quebec H3A 0B8, Canada
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58
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Sakai HA, Liu W, Le CC, MacMillan DWC. Cross-Electrophile Coupling of Unactivated Alkyl Chlorides. J Am Chem Soc 2020; 142:11691-11697. [PMID: 32564602 DOI: 10.1021/jacs.0c04812] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Alkyl chlorides are bench-stable chemical feedstocks that remain among the most underutilized electrophile classes in transition metal catalysis. Overcoming intrinsic limitations of C(sp3)-Cl bond activation, we report the development of a novel organosilane reagent that can participate in chlorine atom abstraction under mild photocatalytic conditions. In particular, we describe the application of this mechanism to a dual nickel/photoredox catalytic protocol that enables the first cross-electrophile coupling of unactivated alkyl chlorides and aryl chlorides. Employing these low-toxicity, abundant, and commercially available organochloride building blocks, this methodology allows access to a broad array of highly functionalized C(sp2)-C(sp3) coupled adducts, including numerous drug analogues.
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Affiliation(s)
- Holt A Sakai
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Wei Liu
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Chi Chip Le
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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59
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Abstract
Progress in Ni/photoredox dual catalysis has enabled the construction of C(sp3)-hybridized centers under extremely mild reaction conditions in the presence of diverse functional groups. These strategies, however, are mainly restricted to the assembly of one C-C or C-heteroatom linkage because of the competitive two-component reactions and facile β-hydride elimination from alkylmetal complexes. Recently, photoinduced nickel-catalyzed 1,2-difunctionalizations of alkenes and alkynes have attracted extensive research efforts as they allow the construction of two sequential chemical bonds from inexpensive starting materials in one pot. Herein, we explore recent advances, state the current challenges, and discuss perspectives on the design of new catalytic systems.
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Affiliation(s)
- Shorouk O. Badir
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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60
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Zhao JH, Zhou ZZ, Zhang Y, Su X, Chen XM, Liang YM. Visible-light-mediated borylation of aryl and alkyl halides with a palladium complex. Org Biomol Chem 2020; 18:4390-4394. [PMID: 32483581 DOI: 10.1039/d0ob00028k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Palladium catalyzed visible-light-mediated borylation of inactivated aryl and alkyl halides is reported; the method provided high yields and excellent functional group compatibility. Furthermore, arylsilicates were synthesized selectively using dimethylphenylsilyl boronic ester via changing the reaction conditions. Finally, the possible reaction mechanism is determined through fluorescence quenching and turn on/off experiments.
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Affiliation(s)
- Jia-Hui Zhao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China.
| | - Zhao-Zhao Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China. and School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yue Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China.
| | - Xuan Su
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China.
| | - Xi-Meng Chen
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China.
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61
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Wang X, Cui X, Li S, Wang Y, Xia C, Jiao H, Wu L. Zirconium‐Catalyzed Atom‐Economical Synthesis of 1,1‐Diborylalkanes from Terminal and Internal Alkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xianjin Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xin Cui
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Sida Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Yue Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Lipeng Wu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute of LICP Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
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62
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Wang X, Cui X, Li S, Wang Y, Xia C, Jiao H, Wu L. Zirconium-Catalyzed Atom-Economical Synthesis of 1,1-Diborylalkanes from Terminal and Internal Alkenes. Angew Chem Int Ed Engl 2020; 59:13608-13612. [PMID: 32297413 PMCID: PMC7496309 DOI: 10.1002/anie.202002642] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Indexed: 12/23/2022]
Abstract
A general and atom‐economical synthesis of 1,1‐diborylalkanes from alkenes and a borane without the need for an additional H2 acceptor is reported for the first time. The key to our success is the use of an earth‐abundant zirconium‐based catalyst, which allows a balance of self‐contradictory reactivities (dehydrogenative boration and hydroboration) to be achieved. Our method avoids using an excess amount of another alkene as an H2 acceptor, which was required in other reported systems. Furthermore, substrates such as simple long‐chain aliphatic alkenes that did not react before also underwent 1,1‐diboration in our system. Significantly, the unprecedented 1,1‐diboration of internal alkenes enabled the preparation of 1,1‐diborylalkanes.
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Affiliation(s)
- Xianjin Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xin Cui
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Sida Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Yue Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Lipeng Wu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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63
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Docherty JH, Nicholson K, Dominey AP, Thomas SP. A Boron–Boron Double Transborylation Strategy for the Synthesis of gem-Diborylalkanes. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00869] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jamie H. Docherty
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Kieran Nicholson
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Andrew P. Dominey
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Stephen P. Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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64
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Sun S, Duan Y, Mega RS, Somerville RJ, Martin R. Site‐Selective 1,2‐Dicarbofunctionalization of Vinyl Boronates through Dual Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916279] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shang‐Zheng Sun
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Universitat Rovira i VirgiliDepartament de Química Analítica i Química Orgànica c/Marcel lí Domingo, 1 43007 Tarragona Spain
| | - Yaya Duan
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Riccardo S. Mega
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Rosie J. Somerville
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Universitat Rovira i VirgiliDepartament de Química Analítica i Química Orgànica c/Marcel lí Domingo, 1 43007 Tarragona Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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65
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Lucas EL, Hewitt KA, Chen PP, Castro AJ, Hong X, Jarvo ER. Engaging Sulfonamides: Intramolecular Cross-Electrophile Coupling Reaction of Sulfonamides with Alkyl Chlorides. J Org Chem 2020; 85:1775-1793. [PMID: 31840511 DOI: 10.1021/acs.joc.9b02603] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The application of amine derivatives as coupling partners is rare due to the inherent strength of the C-N bond. Herein, we report the first cross-electrophile coupling reaction of unstrained benzylic sulfonamides. Nickel-catalyzed intramolecular cross-electrophile coupling reactions of acyclic and cyclic benzylic sulfonamides with pendant alkyl chlorides generate cyclopropane products. Mechanistic experiments and DFT calculations are consistent with initiation of the reaction by magnesium iodide accelerated oxidative addition of the benzylic sulfonamide. This work establishes neutral and unstrained amine derivatives as XEC partners, furnishes structural rearrangement of benzylic sulfonamides, and provides valuable information regarding catalyst design for the development of new cross-electrophile coupling reactions of carbon-heteroatom bonds.
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Affiliation(s)
- Erika L Lucas
- Department of Chemistry , University of California , Irvine , California 92697-2025 , United States
| | - Kirsten A Hewitt
- Department of Chemistry , University of California , Irvine , California 92697-2025 , United States
| | - Pan-Pan Chen
- Department of Chemistry , Zhejiang University , Hangzhou 310027 , China
| | - Anthony J Castro
- Department of Chemistry , University of California , Irvine , California 92697-2025 , United States
| | - Xin Hong
- Department of Chemistry , Zhejiang University , Hangzhou 310027 , China
| | - Elizabeth R Jarvo
- Department of Chemistry , University of California , Irvine , California 92697-2025 , United States
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66
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Verma PK, Prasad KS, Varghese D, Geetharani K. Cobalt(I)-Catalyzed Borylation of Unactivated Alkyl Bromides and Chlorides. Org Lett 2020; 22:1431-1436. [DOI: 10.1021/acs.orglett.0c00038] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Piyush Kumar Verma
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - K. Sujit Prasad
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Dominic Varghese
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - K. Geetharani
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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67
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Lee B, Chirik PJ. Ketone Synthesis from Benzyldiboronates and Esters: Leveraging α-Boryl Carbanions for Carbon-Carbon Bond Formation. J Am Chem Soc 2020; 142:2429-2437. [PMID: 31937102 PMCID: PMC7047910 DOI: 10.1021/jacs.9b11944] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
An alkoxide-promoted method for the synthesis of ketones from readily available esters and benzyldiboronates is described. The synthetic method is compatible with a host of sterically differentiated alkyl groups, alkenes, acidic protons α to carbonyl groups, tertiary amides, and aryl rings having common organic functional groups. With esters bearing α-stereocenters, high enantiomeric excess was maintained during ketone formation, establishing minimal competing racemization by deprotonation. Monitoring the reaction between benzyldiboronate and LiOtBu in THF at 23 °C allowed for the identification of products arising from deborylation to form an α-boryl carbanion, deprotonation, and alkoxide addition to form an "-ate" complex. Addition of 4-trifluoromethylbenzoate to this mixture established the α-boryl carbanion as the intermediate responsible for C-C bond formation and ultimately ketone synthesis. Elucidation of the role of this intermediate leveraged additional bond-forming chemistry and enabled the one-pot synthesis of ketones with α-halogen atoms and quaternary centers with four-different carbon substituents.
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Affiliation(s)
- Boran Lee
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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68
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Sun SZ, Duan Y, Mega RS, Somerville RJ, Martin R. Site-Selective 1,2-Dicarbofunctionalization of Vinyl Boronates through Dual Catalysis. Angew Chem Int Ed Engl 2020; 59:4370-4374. [PMID: 31910307 DOI: 10.1002/anie.201916279] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/07/2020] [Indexed: 01/05/2023]
Abstract
A modular, site-selective 1,2-dicarbofunctionalization of vinyl boronates with organic halides through dual catalysis is described. This reaction proceeds under mild conditions and is characterized by excellent chemo- and regioselectivity. It thus represents a complementary new technique for preparing densely functionalized alkyl boron architectures from simple and accessible precursors.
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Affiliation(s)
- Shang-Zheng Sun
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, c/Marcel lí Domingo, 1, 43007, Tarragona, Spain
| | - Yaya Duan
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Riccardo S Mega
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Rosie J Somerville
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, c/Marcel lí Domingo, 1, 43007, Tarragona, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
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69
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Zhang L, Wu Z, Jiao L. Photoinduced Radical Borylation of Alkyl Bromides Catalyzed by 4‐Phenylpyridine. Angew Chem Int Ed Engl 2020; 59:2095-2099. [DOI: 10.1002/anie.201912564] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/01/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Li Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Zhong‐Qian Wu
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
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70
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Jin S, Dang HT, Haug GC, He R, Nguyen VD, Nguyen VT, Arman HD, Schanze KS, Larionov OV. Visible Light-Induced Borylation of C-O, C-N, and C-X Bonds. J Am Chem Soc 2020; 142:1603-1613. [PMID: 31899630 PMCID: PMC7137638 DOI: 10.1021/jacs.9b12519] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Boronic acids are centrally important functional motifs and synthetic precursors. Visible light-induced borylation may provide access to structurally diverse boronates, but a broadly efficient photocatalytic borylation method that can effect borylation of a wide range of substrates, including strong C-O bonds, remains elusive. Herein, we report a general, metal-free visible light-induced photocatalytic borylation platform that enables borylation of electron-rich derivatives of phenols and anilines, chloroarenes, as well as other haloarenes. The reaction exhibits excellent functional group tolerance, as demonstrated by the borylation of a range of structurally complex substrates. Remarkably, the reaction is catalyzed by phenothiazine, a simple organic photocatalyst with MW < 200 that mediates the previously unachievable visible light-induced single electron reduction of phenol derivatives with reduction potentials as negative as approximately - 3 V versus SCE by a proton-coupled electron transfer mechanism. Mechanistic studies point to the crucial role of the photocatalyst-base interaction.
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Affiliation(s)
- Shengfei Jin
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Hang T Dang
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Graham C Haug
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Ru He
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
- Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Viet D Nguyen
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Vu T Nguyen
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Hadi D Arman
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Kirk S Schanze
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Oleg V Larionov
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
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71
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Reaction scope and mechanistic insights of nickel-catalyzed migratory Suzuki-Miyaura cross-coupling. Nat Commun 2020; 11:417. [PMID: 31964876 PMCID: PMC6972863 DOI: 10.1038/s41467-019-14016-1] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 12/12/2019] [Indexed: 11/08/2022] Open
Abstract
Cross-coupling reactions have developed into powerful approaches for carbon–carbon bond formation. In this work, a Ni-catalyzed migratory Suzuki–Miyaura cross-coupling featuring high benzylic or allylic selectivity has been developed. With this method, unactivated alkyl electrophiles and aryl or vinyl boronic acids can be efficiently transferred to diarylalkane or allylbenzene derivatives under mild conditions. Importantly, unactivated alkyl chlorides can also be successfully used as the coupling partners. To demonstrate the applicability of this method, we showcase that this strategy can serve as a platform for the synthesis of terminal, partially deuterium-labeled molecules from readily accessible starting materials. Experimental studies suggest that migratory cross-coupling products are generated from Ni(0/II) catalytic cycle. Theoretical calculations indicate that the chain-walking occurs at a neutral nickel complex rather than a cationic one. In addition, the original-site cross-coupling products can be obtained by alternating the ligand, wherein the formation of the products has been rationalized by a radical chain process. Migratory cross-coupling reactions are powerful tools to form bonds at predictable positions. Here the authors report a nickel-catalyzed migratory Suzuki–Miyaura cross-coupling of unactivated alkyl electrophiles with aryl and vinyl boron reagents and provide experimental and computational mechanistic evidence.
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72
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Ma G, Chen C, Talukdar S, Zhao X, Lei C, Gong H. Metal catalyst-free photo-induced alkyl C–O bond borylation. Chem Commun (Camb) 2020; 56:10219-10222. [DOI: 10.1039/d0cc04776g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tertiary alkyl boronates were prepared via the C–O bond borylation of the corresponding oxalates under catalyst-free/(DMF)2–B2cat2 initiated visible light-induced conditions.
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Affiliation(s)
- Guobin Ma
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
| | - Changzhou Chen
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
| | - Sangita Talukdar
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
| | - Xinluo Zhao
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
| | - Chuanhu Lei
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Department of Physics and Institute for the Conservation of Cultural Heritage
- Shanghai University
- Shanghai 200444
- China
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73
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Wu J, Bär RM, Guo L, Noble A, Aggarwal VK. Photoinduced Deoxygenative Borylations of Aliphatic Alcohols. Angew Chem Int Ed Engl 2019; 58:18830-18834. [PMID: 31613033 DOI: 10.1002/anie.201910051] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/14/2019] [Indexed: 01/14/2023]
Abstract
A photochemical method for converting aliphatic alcohols into boronic esters is described. Preactivation of the alcohol as a 2-iodophenyl-thionocarbonate enables a novel Barton-McCombie-type radical deoxygenation that proceeds efficiently with visible light irradiation and without the requirement for a photocatalyst, a radical initiator, or tin or silicon hydrides. The resultant alkyl radical is intercepted by bis(catecholato)diboron, furnishing boronic esters from a diverse range of structurally complex alcohols.
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Affiliation(s)
- Jingjing Wu
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Robin M Bär
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Lin Guo
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Adam Noble
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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74
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Zhang L, Wu Z, Jiao L. Photoinduced Radical Borylation of Alkyl Bromides Catalyzed by 4‐Phenylpyridine. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912564] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Li Zhang
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Zhong‐Qian Wu
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS)Department of ChemistryTsinghua University Beijing 100084 China
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75
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Wu J, Bär RM, Guo L, Noble A, Aggarwal VK. Photoinduced Deoxygenative Borylations of Aliphatic Alcohols. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jingjing Wu
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Robin M. Bär
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Lin Guo
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
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76
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Photocatalytic activation of alkyl chlorides by assembly-promoted single electron transfer in microheterogeneous solutions. Nat Catal 2019. [DOI: 10.1038/s41929-019-0369-5] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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77
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Friese FW, Studer A. New avenues for C-B bond formation via radical intermediates. Chem Sci 2019; 10:8503-8518. [PMID: 32015798 PMCID: PMC6977546 DOI: 10.1039/c9sc03765a] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/03/2019] [Indexed: 12/26/2022] Open
Abstract
This perspective gives an overview on recent findings in the emerging area of C-radical borylation using diborons as radical trapping reagents. Aryl, vinyl and alkyl boronic esters can be accessed via such an approach under mild conditions. These processes are complementary to established transition metal catalysed cross coupling reactions. Radical borylations can be conducted in the absence of a transition metal but some processes require transition metals as catalysts. It will be shown that various readily available C-radical precursors can be used to run these borylations. For a better understanding of the chemistry, mechanistic discussions are also presented and an outlook on this topic will be provided at the end of the article.
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Affiliation(s)
- Florian W Friese
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstrasse 40 , 48149 Münster , Germany .
| | - Armido Studer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstrasse 40 , 48149 Münster , Germany .
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78
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Tappin NDC, Michalska W, Rohrbach S, Renaud P. Cyclopropanation of Terminal Alkenes through Sequential Atom‐Transfer Radical Addition/1,3‐Elimination. Angew Chem Int Ed Engl 2019; 58:14240-14244. [DOI: 10.1002/anie.201907962] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Nicholas D. C. Tappin
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Weronika Michalska
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Simon Rohrbach
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Philippe Renaud
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
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79
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Tappin NDC, Michalska W, Rohrbach S, Renaud P. Cyclopropanation of Terminal Alkenes through Sequential Atom‐Transfer Radical Addition/1,3‐Elimination. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907962] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Nicholas D. C. Tappin
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Weronika Michalska
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Simon Rohrbach
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Philippe Renaud
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
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80
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Chen LA, Lear AR, Gao P, Brown MK. Nickel-Catalyzed Arylboration of Alkenylarenes: Synthesis of Boron-Substituted Quaternary Carbons and Regiodivergent Reactions. Angew Chem Int Ed Engl 2019; 58:10956-10960. [PMID: 31250959 PMCID: PMC6663602 DOI: 10.1002/anie.201904861] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Indexed: 12/19/2022]
Abstract
A method for the construction of boron-substituted quaternary carbons or diarylquaternary carbons by arylboration of highly substituted alkenylarenes is presented. A wide range of alkenes and arylbromides can participate in this reaction thus allowing for a diverse assortment of products to be prepared. In addition, a solvent dependent regiodivergent arylboration of 1,2-disubstituted alkenylarenes is presented, thus greatly increasing the scope of products that can be accessed.
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Affiliation(s)
- Liang-An Chen
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Alan R Lear
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Pin Gao
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
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81
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Iwamoto H, Endo K, Ozawa Y, Watanabe Y, Kubota K, Imamoto T, Ito H. Copper(I)‐Catalyzed Enantioconvergent Borylation of Racemic Benzyl Chlorides Enabled by Quadrant‐by‐Quadrant Structure Modification of Chiral Bisphosphine Ligands. Angew Chem Int Ed Engl 2019; 58:11112-11117. [DOI: 10.1002/anie.201906011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/04/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Hiroaki Iwamoto
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Kohei Endo
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Yu Ozawa
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Yuta Watanabe
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Koji Kubota
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Tsuneo Imamoto
- Organic R&D DepartmentNippon Chemical Industrial Co., Ltd. Kameido, Koto-Ku Tokyo 136-8515 Japan
- Department of ChemistryGraduate School of ScienceChiba University Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Hajime Ito
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD)Hokkaido University Japan
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82
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Wang ZC, Shen D, Gao J, Jia X, Xu Y, Shi SL. Base-catalysed reductive relay hydroboration of allylic alcohols with pinacolborane to form alkylboronic esters. Chem Commun (Camb) 2019; 55:8848-8851. [PMID: 31173003 DOI: 10.1039/c9cc03459e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An unprecedented base-catalysed reductive relay hydroboration of allylic alcohols is described. Commercially available nBuLi was found to be a robust transition metal-free initiator for this protocol, affording various boronic esters in high yield and selectivity. Mechanistically, this methodology involves a one-pot three-step successive process (dehydrocoupling/allylic hydride substitution/anti-Markovnikov hydroboration).
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Affiliation(s)
- Zi-Chao Wang
- School of Pharmaceutical Engineering, and Key Laboratory of Structure-Based Drug Design & Discovery (Ministry of Education), Shenyang Pharmaceutical University, Shenyang 110016, China.
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83
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Iwamoto H, Endo K, Ozawa Y, Watanabe Y, Kubota K, Imamoto T, Ito H. Copper(I)‐Catalyzed Enantioconvergent Borylation of Racemic Benzyl Chlorides Enabled by Quadrant‐by‐Quadrant Structure Modification of Chiral Bisphosphine Ligands. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hiroaki Iwamoto
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Kohei Endo
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Yu Ozawa
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Yuta Watanabe
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Koji Kubota
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Tsuneo Imamoto
- Organic R&D DepartmentNippon Chemical Industrial Co., Ltd. Kameido, Koto-Ku Tokyo 136-8515 Japan
- Department of ChemistryGraduate School of ScienceChiba University Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Hajime Ito
- Division of Applied ChemistryGraduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD)Hokkaido University Japan
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84
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Chen L, Lear AR, Gao P, Brown MK. Nickel‐Catalyzed Arylboration of Alkenylarenes: Synthesis of Boron‐Substituted Quaternary Carbons and Regiodivergent Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904861] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Liang‐An Chen
- Department of ChemistryIndiana University 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Alan R. Lear
- Department of ChemistryIndiana University 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Pin Gao
- Department of ChemistrySchool of ScienceXi'an Key Laboratory of Sustainable Energy Material ChemistryMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - M. Kevin Brown
- Department of ChemistryIndiana University 800 E. Kirkwood Ave. Bloomington IN 47405 USA
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85
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Liu Q, Hong J, Sun B, Bai G, Li F, Liu G, Yang Y, Mo F. Transition-Metal-Free Borylation of Alkyl Iodides via a Radical Mechanism. Org Lett 2019; 21:6597-6602. [DOI: 10.1021/acs.orglett.9b01951] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qianyi Liu
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Junting Hong
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Beiqi Sun
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Guangcan Bai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100871, China
| | - Feng Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100871, China
| | - Guoquan Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100871, China
| | - Yang Yang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Fanyang Mo
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China
- Donghai High-tech Industrial Development Zone, Donghai County, Jiangsu Province 222000, China
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86
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Kadassery KJ, MacMillan SN, Lacy DC. Resurgence of Organomanganese(I) Chemistry. Bidentate Manganese(I) Phosphine–Phenol(ate) Complexes. Inorg Chem 2019; 58:10527-10535. [DOI: 10.1021/acs.inorgchem.9b00941] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Karthika J. Kadassery
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - David C. Lacy
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
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87
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88
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Friese FW, Studer A. Deoxygenative Borylation of Secondary and Tertiary Alcohols. Angew Chem Int Ed Engl 2019; 58:9561-9564. [PMID: 31050141 PMCID: PMC6772128 DOI: 10.1002/anie.201904028] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Indexed: 12/31/2022]
Abstract
Two different approaches for the deoxygenative radical borylation of secondary and tertiary alcohols are presented. These transformations either proceed through a metal‐free silyl‐radical‐mediated pathway or utilize visible‐light photoredox catalysis. Readily available xanthates or methyl oxalates are used as radical precursors. The reactions show broad substrate scope and high functional‐group tolerance, and are conducted under mild and practical conditions.
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Affiliation(s)
- Florian W Friese
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
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89
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Mazzarella D, Magagnano G, Schweitzer-Chaput B, Melchiorre P. Photochemical Organocatalytic Borylation of Alkyl Chlorides, Bromides, and Sulfonates. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01482] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daniele Mazzarella
- ICIQ−Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Giandomenico Magagnano
- ICIQ−Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Bertrand Schweitzer-Chaput
- ICIQ−Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Paolo Melchiorre
- ICIQ−Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
- IIT−Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy
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90
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Wang XX, Li L, Gong TJ, Xiao B, Lu X, Fu Y. Vicinal Diboration of Alkyl Bromides via Tandem Catalysis. Org Lett 2019; 21:4298-4302. [DOI: 10.1021/acs.orglett.9b01481] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Xu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Lei Li
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Tian-Jun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
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91
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Wollenburg M, Moock D, Glorius F. Hydrogenation of Borylated Arenes. Angew Chem Int Ed Engl 2019; 58:6549-6553. [DOI: 10.1002/anie.201810714] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/01/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Marco Wollenburg
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Daniel Moock
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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92
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Wang T, Wang DH. Potassium Alkylpentafluorosilicates, Primary Alkyl Radical Precursors in the C-1 Alkylation of Tetrahydroisoquinolines. Org Lett 2019; 21:3981-3985. [DOI: 10.1021/acs.orglett.9b01124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Teng Wang
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
| | - Dong-Hui Wang
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
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93
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Claros M, Ungeheuer F, Franco F, Martin‐Diaconescu V, Casitas A, Lloret‐Fillol J. Reductive Cyclization of Unactivated Alkyl Chlorides with Tethered Alkenes under Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:4869-4874. [PMID: 30707782 PMCID: PMC6519206 DOI: 10.1002/anie.201812702] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/26/2019] [Indexed: 01/09/2023]
Abstract
The chemical inertness of abundant and commercially available alkyl chlorides precludes their widespread use as reactants in chemical transformations. Presented in this work is a metallaphotoredox methodology to achieve the catalytic intramolecular reductive cyclization of unactivated alkyl chlorides with tethered alkenes. The cleavage of strong C(sp3 )-Cl bonds is mediated by a highly nucleophilic low-valent cobalt or nickel intermediate generated by visible-light photoredox reduction employing a copper photosensitizer. The high basicity and multidentate nature of the ligands are key to obtaining efficient metal catalysts for the functionalization of unactivated alkyl chlorides.
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Affiliation(s)
- Miguel Claros
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
| | - Felix Ungeheuer
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
| | - Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
| | - Vlad Martin‐Diaconescu
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
| | - Alicia Casitas
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
| | - Julio Lloret‐Fillol
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAvda. Països Catalans, 1643007TarragonaSpain
- Catalan Institution for Research and Advanced Studies (ICREA)Passeig Lluïs Companys, 2308010BarcelonaSpain
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94
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Seihara T, Sakurai S, Kato T, Sakamoto R, Maruoka K. Synthesis of Functionalized Organoboron/Silicon Compounds by Copper-Catalyzed Coupling of Alkylsilyl Peroxides and Diboron/Silylborane Reagents. Org Lett 2019; 21:2477-2481. [DOI: 10.1021/acs.orglett.9b00874] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Takumi Seihara
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Shunya Sakurai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Terumasa Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryu Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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95
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Claros M, Ungeheuer F, Franco F, Martin‐Diaconescu V, Casitas A, Lloret‐Fillol J. Reductive Cyclization of Unactivated Alkyl Chlorides with Tethered Alkenes under Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812702] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Miguel Claros
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
| | - Felix Ungeheuer
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
| | - Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
| | - Vlad Martin‐Diaconescu
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
| | - Alicia Casitas
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
| | - Julio Lloret‐Fillol
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology Avda. Països Catalans, 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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96
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Wang ZC, Wang M, Gao J, Shi SL, Xu Y. nBuLi-promoted anti-Markovnikov selective hydroboration of unactivated alkenes and internal alkynes. Org Chem Front 2019. [DOI: 10.1039/c9qo00750d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A novel anti-Markovnikov selective hydroboration of alkenes and alkynes with HBpin using nBuLi as an effective initiator is described.
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Affiliation(s)
- Zi-Chao Wang
- School of Pharmaceutical Engineering
- and Key Laboratory of Structure-Based Drug Design & Discovery (Ministry of Education)
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Min Wang
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Jian Gao
- School of Pharmaceutical Engineering
- and Key Laboratory of Structure-Based Drug Design & Discovery (Ministry of Education)
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Shi-Liang Shi
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Youjun Xu
- School of Pharmaceutical Engineering
- and Key Laboratory of Structure-Based Drug Design & Discovery (Ministry of Education)
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
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97
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Yang JC, Chen L, Yang F, Li P, Guo LN. Copper-catalyzed borylation of cycloalkylsilyl peroxides via radical C–C bond cleavage. Org Chem Front 2019. [DOI: 10.1039/c9qo00472f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A mild copper-catalyzed radical C–C bond cleavage/borylation of cycloalkylsilyl peroxides is described. A range of four to eight, and even twelve-membered substrates were compatible, offering rapid access to keto-functionalized alkyl boronic esters.
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Affiliation(s)
- Jun-Cheng Yang
- Department of Chemistry
- School of Science
- 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
| | - Lei Chen
- Department of Chemistry
- School of Science
- 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
| | - Fan Yang
- Department of Chemistry
- School of Science
- 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
| | - Pengfei Li
- Center for Organic Chemistry
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an 710054
- China
| | - Li-Na Guo
- Department of Chemistry
- School of Science
- 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
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98
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Zhao X, Li C, Wang B, Cao S. Copper-catalyzed synthesis of gem-difluoroallylboronates from α-trifluoromethyl alkenes and B2pin2. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.11.073] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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99
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Affiliation(s)
- Marco Wollenburg
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Daniel Moock
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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100
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Cheng Y, Mück‐Lichtenfeld C, Studer A. Metal-Free Radical Borylation of Alkyl and Aryl Iodides. Angew Chem Int Ed Engl 2018; 57:16832-16836. [PMID: 30332527 PMCID: PMC6470957 DOI: 10.1002/anie.201810782] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 11/06/2022]
Abstract
A metal-free radical borylation of alkyl and aryl iodides with bis(catecholato)diboron (B2 cat2 ) as the boron source under mild conditions is introduced. The borylation reaction is operationally easy to conduct and shows high functional group tolerance and broad substrate scope. Radical clock experiments and density functional theory calculations provide insights into the mechanism and rate constants for C-radical borylation with B2 cat2 are disclosed.
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Affiliation(s)
- Ying Cheng
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
- Westfälische Wilhelms-UniversitätCenter for Multiscale Theory and Computation (CMTC)Corrensstrasse 4048149MünsterGermany
| | - Armido Studer
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
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