1
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Zhang Z, Jia J, Hu F, Xia Y. Aldehyde Olefination with Arylboroxines Enabled by Binary Rhodium Catalysis. Org Lett 2023; 25:3228-3233. [PMID: 37104730 DOI: 10.1021/acs.orglett.3c00916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
A rhodium-catalyzed olefination of aliphatic aldehydes with arylboroxines is described. The simple rhodium(I) complex [Rh(cod)OH]2 without any external ligands or additives is able to catalyze the reaction in air and neutral conditions, allowing the construction of aryl olefins in an efficient manner with a good functional group tolerance. The mechanistic investigation illustrates that the binary rhodium catalysis is the key for the transformation, which involves a Rh(I)-catalyzed 1,2-addition and a Rh(III)-catalyzed elimination.
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Affiliation(s)
- Zihao Zhang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jie Jia
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Fangdong Hu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Ying Xia
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
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2
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Enantiocontrol over Acyclic Quaternary Stereocenters by Acylative Organocatalyzed Kinetic Resolution. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Zhao W, Zhang K, Huang J. Rh-Catalyzed Coupling of Aldehydes with Allylboronates Enables Facile Access to Ketones. Chemistry 2021; 28:e202103851. [PMID: 34967479 DOI: 10.1002/chem.202103851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Indexed: 11/09/2022]
Abstract
We present herein a novel strategy for the preparation of ketones from aldehydes and allylic boronicesters. This reaction involves the allylation of aldehydes with allylic boronicesters and the Rh-catalyzed chain-walking of homoallylic alcohols. The key to this successful development is the protodeboronation of alkenyl borylether intermediate via a tetravalent borate anion species in the presence of KHF 2 and MeOH. This approach features mild reaction conditions, broad substrate scope, and excellent functional group tolerance. Mechanistic studies also supported that the tandem allylation and chain-walking process was involved.
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Affiliation(s)
- Wanxiang Zhao
- Hunan University, chemistry, Yuelushan, Changsha, 410082, changsha, CHINA
| | | | - Jiaxin Huang
- Hunan University, College of Chemistry and Chemical Engineering, CHINA
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4
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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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5
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Clement HA, Boghi M, McDonald RM, Bernier L, Coe JW, Farrell W, Helal CJ, Reese MR, Sach NW, Lee JC, Hall DG. High‐Throughput Ligand Screening Enables the Enantioselective Conjugate Borylation of Cyclobutenones to Access Synthetically Versatile Tertiary Cyclobutylboronates. Angew Chem Int Ed Engl 2019; 58:18405-18409. [DOI: 10.1002/anie.201909308] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/22/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Helen A. Clement
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Michele Boghi
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rory M. McDonald
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Louise Bernier
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Jotham W. Coe
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - William Farrell
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Christopher J. Helal
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Matthew R. Reese
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Neal W. Sach
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Jack C. Lee
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Dennis G. Hall
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
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6
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Clement HA, Boghi M, McDonald RM, Bernier L, Coe JW, Farrell W, Helal CJ, Reese MR, Sach NW, Lee JC, Hall DG. High‐Throughput Ligand Screening Enables the Enantioselective Conjugate Borylation of Cyclobutenones to Access Synthetically Versatile Tertiary Cyclobutylboronates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909308] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Helen A. Clement
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Michele Boghi
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rory M. McDonald
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Louise Bernier
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Jotham W. Coe
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - William Farrell
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Christopher J. Helal
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Matthew R. Reese
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Neal W. Sach
- Pfizer Worldwide Research and DevelopmentLa Jolla Laboratories 10770 Science Center Drive San Diego CA 92121 USA
| | - Jack C. Lee
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06340 USA
| | - Dennis G. Hall
- Department of Chemistry, 4-010 CCISUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
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7
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Tan YX, Zhang F, Xie PP, Zhang SQ, Wang YF, Li QH, Tian P, Hong X, Lin GQ. Rhodium(III)-Catalyzed Asymmetric Borylative Cyclization of Cyclohexadienone-Containing 1,6-Dienes: An Experimental and DFT Study. J Am Chem Soc 2019; 141:12770-12779. [DOI: 10.1021/jacs.9b05583] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yun-Xuan Tan
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Fang Zhang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Pei-Pei Xie
- Department of Chemistry, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Shuo-Qing Zhang
- Department of Chemistry, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Yi-Fan Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Qing-Hua Li
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Ping Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Guo-Qiang Lin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
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8
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Bochat AJ, Shoba VM, Takacs JM. Ligand-Controlled Regiodivergent Enantioselective Rhodium-Catalyzed Alkene Hydroboration. Angew Chem Int Ed Engl 2019; 58:9434-9438. [PMID: 31067341 DOI: 10.1002/anie.201903308] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Indexed: 12/31/2022]
Abstract
Regiocontrol in the rhodium-catalyzed boration of vinyl arenes is typically dominated by the presence of the conjugated aryl substituent. However, small differences in TADDOL-derived chiral monophosphite ligands can override this effect and direct rhodium-catalyzed hydroboration of β-aryl and β-heteroaryl methylidenes by pinacolborane to selectively produce either chiral primary or tertiary borated products. The regiodivergent behavior is coupled with enantiodivergent addition of the borane. The nature of the TADDOL backbone substituents and that of the phosphite moiety function synergistically to direct the sense and extent of regioselectivity and enantioinduction. Twenty substrates are shown to undergo each reaction mode with regioselectivity values reaching greater than 20:1 and enantiomer ratios reaching up to 98:2. A variety of subsequent transformations illustrate the potential utility of each product.
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Affiliation(s)
- Andrew J Bochat
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Veronika M Shoba
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - James M Takacs
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
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9
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Bochat AJ, Shoba VM, Takacs JM. Ligand‐Controlled Regiodivergent Enantioselective Rhodium‐Catalyzed Alkene Hydroboration. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903308] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Andrew J. Bochat
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Veronika M. Shoba
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - James M. Takacs
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
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10
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Han Z, Liu G, Zhang X, Li A, Dong XQ, Zhang X. Synthesis of Chiral β-Borylated Carboxylic Esters via Nickel-Catalyzed Asymmetric Hydrogenation. Org Lett 2019; 21:3923-3926. [DOI: 10.1021/acs.orglett.9b00994] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhengyu Han
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Gang Liu
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xianghe Zhang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Anqi Li
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiu-Qin Dong
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xumu Zhang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
- Department of Chemistry, Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
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11
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Chakrabarty S, Palencia H, Morton MD, Carr RO, Takacs JM. Facile access to functionalized chiral secondary benzylic boronic esters via catalytic asymmetric hydroboration. Chem Sci 2019; 10:4854-4861. [PMID: 31183035 PMCID: PMC6520923 DOI: 10.1039/c8sc05613g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/25/2019] [Indexed: 12/29/2022] Open
Abstract
Allylic and homoallylic phosphonates bearing an aryl or heteroaryl substituent at the γ- or δ-position undergo rhodium-catalyzed asymmetric hydroboration by pinacolborane to give functionalized chiral secondary benzylic boronic esters in yields up to 86% and enantiomer ratios up to 99 : 1. Compared to minimally-functionalized terminal and 1,1-disubstituted vinyl arenes, there are relatively few reports of efficient catalytic asymmetric hydroboration (CAHB) of more highly functionalized internal alkenes. Phosphonate substrates bearing a variety of common heterocyclic ring systems, including furan, indole, pyrrole and thiophene derivatives, as well as those bearing basic nitrogen substituents (e.g., morpholine and pyrazine) are tolerated, although donor substituents positioned in close proximity of the alkene can influence the course of the reaction. Stereoisomeric (E)- and (Z)-substrates afford the same major enantiomer of the borated product. Deuterium-labelling studies reveal that rapid (Z)- to (E)-alkene isomerization accounts for the observed (E/Z)-stereoconvergence during CAHB. The synthetic utility of the chiral boronic ester products is illustrated by stereospecific C-B bond transformations including stereoretentive electrophile promoted 1,2-B-to-C migrations, stereoinvertive SE2 reactions of boron-ate complexes with electrophiles, and stereoretentive palladium- and rhodium-catalyzed cross-coupling protocols.
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Affiliation(s)
- Suman Chakrabarty
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA .
| | - Hector Palencia
- Department of Chemistry , University of Nebraska-Kearney , Kearney , Nebraska 68849 , USA
| | - Martha D Morton
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA . .,Nebraska Center for Integrated Biomolecular Communication (NCIBC) , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA
| | - Ryan O Carr
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA .
| | - James M Takacs
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA . .,Nebraska Center for Integrated Biomolecular Communication (NCIBC) , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA
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12
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Akiyama R, Sugaya M, Shinozaki H, Yamamoto T. NHC-coordinated palladacycle catalyzed 1,2-addition of arylboronates to unactivated ketones. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1594307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ryo Akiyama
- Department of Materials Science and Engineering, Graduate School of Engineering, Tokyo Denki University, Adachi-ku, Tokyo, Japan
| | - Mariko Sugaya
- Department of Materials Science and Engineering, Graduate School of Engineering, Tokyo Denki University, Adachi-ku, Tokyo, Japan
| | - Hiraku Shinozaki
- Department of Applied Chemistry, School of Engineering, Tokyo Denki University, Adachi-ku, Tokyo, Japan
| | - Tetsuya Yamamoto
- Department of Applied Chemistry, School of Engineering, Tokyo Denki University, Adachi-ku, Tokyo, Japan
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13
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Hollerbach MR, Hayes JC, Barker TJ. Benzylation of Imines with Activated Boronate Nucleophiles. European J Org Chem 2019; 2019:1646-1648. [PMID: 32099525 DOI: 10.1002/ejoc.201801804] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Benzylation reactions of N-tosyl imines and N-tert-butanesulfinyl imines using benzylboronic acid pinacol ester are reported. s-Butyllithium was used to activate the boronic ester, rendering it nucleophilic. The reaction was compatible with electronically diverse substituents on the imine in both substrate classes. Good diastereoselectivity was observed in additions to N-tert-butylsulfinylaldimines. The diastereoselectivity observed in these reactions is consistent with an open transition state for the addition. Examples of a secondary alkylboronic ester nucleophile and an N-tert-butanesulfinyl trifluoromethylketimine electrophile are also included.
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Affiliation(s)
- Michael R Hollerbach
- Department of Chemistry and Biochemistry, College of Charleston, Charleston, South Carolina 29424, USA
| | - Jacob C Hayes
- Department of Chemistry and Biochemistry, College of Charleston, Charleston, South Carolina 29424, USA
| | - Timothy J Barker
- Department of Chemistry and Biochemistry, College of Charleston, Charleston, South Carolina 29424, USA
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14
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Hollerbach MR, Barker TJ. Chemoselective Benzylation of Aldehydes Using Lewis Base Activated Boronate Nucleophiles. Organometallics 2018; 37:1425-1427. [PMID: 31680714 DOI: 10.1021/acs.organomet.8b00085] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A benzylation of aldehydes using primary and secondary benzylboronic acid pinacol esters is reported. Activation of the boronic ester with s-butyllithium rendered it nucleophilic toward aldehydes. The activated nucleophile chemoselectively transfers the benzyl group over the s-butyl group, providing excellent yields of the benzylated products. 11B NMR experiments were performed to study the mechnism of this transformation.
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Affiliation(s)
- Michael R Hollerbach
- Department of Chemistry and Biochemistry, College of Charleston, 66 George St., Charleston, South Carolina 29424 United States
| | - Timothy J Barker
- Department of Chemistry and Biochemistry, College of Charleston, 66 George St., Charleston, South Carolina 29424 United States
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15
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Bang J, Oh C, Lee E, Jeong H, Lee J, Ryu JY, Kim J, Yu CM. A Regulation of Regiodivergent Routes for Enantioselective Aldol Addition of 2-Alkyl Allenoates with Aldehydes: α-Addition versus γ-Addition. Org Lett 2018; 20:1521-1525. [DOI: 10.1021/acs.orglett.8b00219] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiyun Bang
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Changhwa Oh
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eunhye Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Heejung Jeong
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jimin Kim
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Chan-Mo Yu
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
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16
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Palladium catalyzed synthesis of mandelate derivatives from arylboronic acids and glyoxylate hemiacetals. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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17
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Green JC, Joannou MV, Murray SA, Zanghi JM, Meek SJ. Enantio- and Diastereoselective Synthesis of Hydroxy Bis(boronates) via Cu-Catalyzed Tandem Borylation/1,2-Addition. ACS Catal 2017; 7:4441-4445. [PMID: 29520326 PMCID: PMC5837064 DOI: 10.1021/acscatal.7b01123] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catalytic enantioselective synthesis of 1-hydroxy-2,3-bisboronate esters through multicomponent borylation/1,2-addition is reported. Catalyst and substrates are readily available, form both a C-B and C-C bond, and generate up to three contiguous stereocenters. The reaction is tolerant of aryl, vinyl, and alkyl aldehydes and ketones in up to 95% yield, >20:1 dr, and 99:1 er. Intramolecular additions to aldehydes and ketones result in stereodivergent processes. The hydroxy bis(boronate) ester products are amenable to site-selective chemical elaboration.
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Affiliation(s)
| | | | - Stephanie A. Murray
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Joseph M. Zanghi
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Simon J. Meek
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
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18
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Blair DJ, Tanini D, Bateman JM, Scott HK, Myers EL, Aggarwal VK. Selective uni- and bidirectional homologation of diborylmethane. Chem Sci 2017; 8:2898-2903. [PMID: 28451355 PMCID: PMC5376717 DOI: 10.1039/c6sc05338f] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/19/2017] [Indexed: 01/28/2023] Open
Abstract
Diborylmethane can be homologated uni- and bidirectionally by using enantiomerically pure lithium-stabilized carbenoids to give 1,2- and 1,3-bis(boronic esters), respectively, in good yield and with excellent levels of enantio- and diastereoselectivity. The high sensitivity of the transformation to steric hindrance enables the exclusive operation of either manifold, effected through the judicious choice of the type of carbenoid, which can be a sparteine-ligated or a diamine-free lithiated benzoate/carbamate. The scope of the 1,2-bis(boronic esters) so generated is complementary to that encompassed by the asymmetric diboration of alkenes, in that primary-secondary and primary-tertiary 1,2-bis(boronic esters) can be prepared with equally high levels of selectivity and that functional groups, such as terminal alkynes and alkenes, are tolerated. Methods for forming C2-symmetric and non-symmetrical anti and syn 1,3-bis(boronic esters) are also described and represent a powerful route towards 1,3-functionalized synthetic intermediates.
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Affiliation(s)
- Daniel J Blair
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
| | - Damiano Tanini
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
| | - Joseph M Bateman
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
| | - Helen K Scott
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
| | - Eddie L Myers
- 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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19
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Sandford C, Aggarwal VK. Stereospecific functionalizations and transformations of secondary and tertiary boronic esters. Chem Commun (Camb) 2017; 53:5481-5494. [DOI: 10.1039/c7cc01254c] [Citation(s) in RCA: 342] [Impact Index Per Article: 48.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article discusses the range of stereospecific transformations available to enantioenriched boronic esters, and their applications in synthesis.
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20
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Park J, Lee Y, Kim J, Cho SH. Copper-Catalyzed Diastereoselective Addition of Diborylmethane to N-tert-Butanesulfinyl Aldimines: Synthesis of β-Aminoboronates. Org Lett 2016; 18:1210-3. [DOI: 10.1021/acs.orglett.6b00376] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jinyoung Park
- Department of Chemistry and
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Yeosan Lee
- Department of Chemistry and
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Junghoon Kim
- Department of Chemistry and
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry and
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
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21
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Lou Y, Cao P, Jia T, Zhang Y, Wang M, Liao J. Copper-Catalyzed Enantioselective 1,6-Boration ofpara-Quinone Methides and Efficient Transformation ofgem-Diarylmethine Boronates to Triarylmethanes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505926] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Lou Y, Cao P, Jia T, Zhang Y, Wang M, Liao J. Copper-Catalyzed Enantioselective 1,6-Boration ofpara-Quinone Methides and Efficient Transformation ofgem-Diarylmethine Boronates to Triarylmethanes. Angew Chem Int Ed Engl 2015; 54:12134-8. [DOI: 10.1002/anie.201505926] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 07/27/2015] [Indexed: 12/14/2022]
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23
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Lee S, Lee WL, Yun J. Rhodium-Catalyzed Addition of Alkyltrifluoroborate Salts to Imines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Hu N, Zhao G, Zhang Y, Liu X, Li G, Tang W. Synthesis of Chiral α-Amino Tertiary Boronic Esters by Enantioselective Hydroboration of α-Arylenamides. J Am Chem Soc 2015; 137:6746-9. [DOI: 10.1021/jacs.5b03760] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Naifu Hu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Guoqing Zhao
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Yuanyuan Zhang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Xiangqian Liu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Guangyu Li
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry and Collaborative Innovation Center
of Chemistry for life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
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25
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Improving Transformations Through Organotrifluoroborates. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/978-3-319-13054-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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26
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Falcicchio A, Nilsson Lill SO, Perna FM, Salomone A, Coppi DI, Cuocci C, Stalke D, Capriati V. Organotrifluoroborates as attractive self-assembling systems: the case of bifunctional dipotassium phenylene-1,4-bis(trifluoroborate). Dalton Trans 2015; 44:19447-50. [DOI: 10.1039/c5dt02020d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multitude of non-covalent interactions, investigated by X-ray crystallography and computational chemistry techniques, proved to be responsible of the spontaneous self-assembly of a bis(trifluoroborate) dipotassium salt.
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Affiliation(s)
| | - Sten O. Nilsson Lill
- Pharmaceutical Innovation
- Pharmaceutical Development
- AstraZeneca
- SE-431 83, Mölndal
- Sweden
| | - Filippo M. Perna
- Dipartimento di Farmacia-Scienze del Farmaco
- Università di Bari “Aldo Moro”
- I-70125, Bari
- Italy
| | - Antonio Salomone
- Dipartimento di Farmacia-Scienze del Farmaco
- Università di Bari “Aldo Moro”
- I-70125, Bari
- Italy
| | - Donato I. Coppi
- Dipartimento di Farmacia-Scienze del Farmaco
- Università di Bari “Aldo Moro”
- I-70125, Bari
- Italy
| | | | - Dietmar Stalke
- Institut für Anorganische Chemie
- Universität Göttingen
- D-37077, Göttingen
- Germany
| | - Vito Capriati
- Dipartimento di Farmacia-Scienze del Farmaco
- Università di Bari “Aldo Moro”
- I-70125, Bari
- Italy
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Takechi R, Nishimura T. Enantioselective 1,4-addition of cyclopropylboronic acid catalyzed by rhodium/chiral diene complexes. Chem Commun (Camb) 2015; 51:8528-31. [DOI: 10.1039/c5cc02140e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rhodium-catalyzed asymmetric addition of cyclopropylboronic acids to electron-deficient alkenes proceeded to give high yields of the corresponding 1,4-addition products with high enantioselectivity.
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Affiliation(s)
- Ryosuke Takechi
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Takahiro Nishimura
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
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28
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Palladium-catalyzed arylation of aldehydes with bromo-substituted 1,3-diaryl-imidazoline carbene ligand. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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29
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Yamamoto T, Zhumagazin A, Furusawa T, Tanaka R, Yamakawa T, Oe Y, Ohta T. Palladium-Catalyzed Hydroxymethylation of Aryl- and Heteroarylboronic Acids using Aqueous Formaldehyde. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400845] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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30
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Maity S, Parker DSN, Kaiser RI, Ganoe B, Fau S, Perera A, Bartlett RJ. Gas-Phase Synthesis of Boronylallene (H 2CCCH(BO)) under Single Collision Conditions: A Crossed Molecular Beams and Computational Study. J Phys Chem A 2014; 118:3810-3819. [PMID: 24806514 DOI: 10.1021/jp501595n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The gas phase reaction between the boron monoxide radical (11BO; X2Σ+) and allene (H2CCCH2; X1A1) was investigated experimentally under single collision conditions using the crossed molecular beam technique and theoretically exploiting ab initio electronic structure and statistical (RRKM) calculations. The reaction was found to follow indirect (complex forming) scattering dynamics and proceeded via the formation of a van der Waals complex (11BOC3H4). This complex isomerized via addition of the boron monoxide radical (11BO; X2Σ+) with the radical center located at the boron atom to the terminal carbon atom of the allene molecule forming a H2CCCH211BO intermediate on the doublet surface. The chemically activated H2CCCH211BO intermediate underwent unimolecular decomposition via atomic hydrogen elimination from the terminal carbon atom holding the boronyl group through a tight exit transition state to synthesize the boronylallene product (H2CCCH11BO) in a slightly exoergic reaction (55 ± 11 kJ mol-1). Statistical (RRKM) calculations suggest that minor reaction channels lead to the products 3-propynyloxoborane (CH2(11BO)CCH) and 1-propynyloxoborane (CH3CC11BO) with fractions of 1.5% and 0.2%, respectively. The title reaction was also compared with the cyano (CN; X2Σ+)-allene and boronyl-methylacetylene reactions to probe similarities, but also differences of these isoelectronic systems. Our investigation presents a novel gas phase synthesis and characterization of a hitherto elusive organyloxoborane (RBO) monomer-boronylallene-which is inherently tricky to isolate in the condensed phase except in matrix studies; our work further demonstrates that the crossed molecular beams approach presents a useful tool in investigating the chemistry and synthesis of highly reactive organyloxoboranes.
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Affiliation(s)
- Surajit Maity
- Department of Chemistry, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States
| | - Dorian S N Parker
- Department of Chemistry, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States
| | - Ralf I Kaiser
- Department of Chemistry, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States
| | - Brad Ganoe
- Quantum Theory Project, University of Florida , Gainesville, Florida 32611, United States
| | - Stefan Fau
- Quantum Theory Project, University of Florida , Gainesville, Florida 32611, United States
| | - Ajith Perera
- Quantum Theory Project, University of Florida , Gainesville, Florida 32611, United States
| | - Rodney J Bartlett
- Quantum Theory Project, University of Florida , Gainesville, Florida 32611, United States
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31
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Wommack AJ, Kingsbury JS. On the scope of the Pt-catalyzed Srebnik diborylation of diazoalkanes. An efficient approach to chiral tertiary boronic esters and alcohols via B-stabilized carbanions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.135] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Yang ZD, Pal R, Hoang GL, Zeng XC, Takacs JM. Mechanistic Insights into Carbonyl-Directed Rhodium-Catalyzed Hydroboration: ab Initio Study of a Cyclic γ,δ-Unsaturated Amide. ACS Catal 2014; 4:763-773. [PMID: 24804151 PMCID: PMC3985861 DOI: 10.1021/cs401023j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/19/2014] [Indexed: 12/15/2022]
Abstract
![]()
A two-point binding mechanism for
the cationic rhodium(I)-catalyzed
carbonyl-directed catalytic asymmetric hydroboration of a cyclic γ,δ-unsaturated
amide is investigated using density functional theory. Geometry optimizations
and harmonic frequency calculations for the model reaction are carried
out using the basis set 6-31+G** for C, O, P, B, N, and H and LANL2DZ
for Rh atoms. The Gibbs free energy of each species in THF solvent
is obtained based on the single-point energy computed using the PCM
model at the ECP28MWB/6-311+G(d,p) level plus the thermal correction
to Gibbs free energy by deducting translational entropy contribution.
The Rh-catalyzed reaction cycle involves the following sequence of
events: (1) chelation of the cyclic γ,δ-unsaturated amide
via alkene and carbonyl complexation in a model active catalytic species,
[Rh(L2)2S2]+, (2) oxidative
addition of pinacol borane (pinBH), (3) migratory insertion of the
alkene double bond into Rh–H (preferred pathway) or Rh–B
bond, (4) isomerization of the resulting intermediate, and finally,
(5) reductive elimination to form the B–C or H–C bond
with regeneration of the catalyst. Free energy profiles for potential
pathways leading to the major γ-borylated product are computed
and discussed in detail. The potential pathways considered include
(1) pathways proceeding via migratory insertion into the Rh–H
bond (pathways I, I-1, and I-2), (2) a potential pathway proceeding via migratory insertion into
the Rh–B bond (pathway II), and two potential
competing routes to a β-borylated byproduct (pathway III). The results find that the Rh–H migratory insertion pathway I-2, followed in sequence by an unanticipated isomerization
via amide rotation and reductive elimination, is the most favorable
reaction pathway. A secondary consequence of amide rotation is access
to a competing β-hydride elimination pathway. The pathways computed
in this study are supported by and help explain related experimental
results.
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Affiliation(s)
- Zhao-Di Yang
- Key Laboratory
of Green Chemical Engineering and Technology of College of Heilongjiang
Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, People’s Republic of China
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Rhitankar Pal
- Department
of Chemistry, Yale University, New Haven, Connecticut 06518, United States
| | - Gia L. Hoang
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Xiao Cheng Zeng
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - James M. Takacs
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
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33
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Marek I, Minko Y, Pasco M, Mejuch T, Gilboa N, Chechik H, Das JP. All-carbon quaternary stereogenic centers in acyclic systems through the creation of several C-C bonds per chemical step. J Am Chem Soc 2014; 136:2682-94. [PMID: 24512113 DOI: 10.1021/ja410424g] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In the past few decades, it has become clear that asymmetric catalysis is one of the most powerful methods for the construction of carbon-carbon as well as carbon-heteroatom bonds in a stereoselective manner. However, when structural complexity increases (i.e., all-carbon quaternary stereogenic center), the difficulty in reaching the desired adducts through asymmetric catalytic reactions leads to a single carbon-carbon bond-forming event per chemical step between two components. Issues of efficiency and convergence should therefore be addressed to avoid extraneous chemical steps. In this Perspective, we present approaches that tackle the stimulating problem of efficiency while answering interesting synthetic challenges. Ideally, if one could create all-carbon quaternary stereogenic centers via the creation of several new carbon-carbon bonds in an acyclic system and in a single-pot operation from simple precursors, it would certainly open new horizons toward solving the synthetic problems. Even more important for any further design, the presence of polyreactive intermediates in synthesis (bismetalated, carbenoid, and oxenoids species) becomes now an indispensable tool, as it creates consecutively the same number of carbon-carbon bonds as in a multi-step process, but in a single-pot operation.
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Affiliation(s)
- Ilan Marek
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry, and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Technion-Israel Institute of Technology , Technion City, Haifa 32000, Israel
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34
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Buesking AW, Ellman JA. Convergent, asymmetric synthesis of vicinal amino alcohols via Rh-catalyzed addition of α-amido trifluoroborates to carbonyls. Chem Sci 2014. [DOI: 10.1039/c4sc00084f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The convergent, asymmetric synthesis of vicinal amino alcohols is achieved by the Rh-catalyzed addition of α-amido trifluoroborates to carbonyl compounds.
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35
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Argintaru OA, Ryu D, Aron I, Molander GA. Synthesis and applications of α-trifluoromethylated alkylboron compounds. Angew Chem Int Ed Engl 2013; 52:13656-60. [PMID: 24214845 PMCID: PMC3904770 DOI: 10.1002/anie.201308036] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Indexed: 11/08/2022]
Abstract
RBF3 K is a chemist's BFF: A metal-free synthetic route to unprecedented organoboron compounds bearing an α-trifluoromethyl substituent, employing a variety of trifluoroborate (RBF3 K) starting materials, is reported. These substrates represent the first isolated α-trifluoromethylated alkylboron building blocks, and these reagents lead to a variety of useful bench-stable, synthetic intermediates. Pin=pinacol.
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Affiliation(s)
- O. Andreea Argintaru
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323
| | - DaWeon Ryu
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323
| | - Ioana Aron
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323
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36
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Argintaru OA, Ryu D, Aron I, Molander GA. Synthesis and Applications of α-Trifluoromethylated Alkylboron Compounds. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308036] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Zhang C, Yun J. Rh-catalyzed addition of β-carbonyl pinacol alkylboronates to aldehydes: asymmetric synthesis of γ-butyrolactones. Org Lett 2013; 15:3416-9. [PMID: 23773146 DOI: 10.1021/ol401468v] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rhodium-catalyzed 1,2-addition of chiral benzylic secondary alkylboronic esters with a coordinating carbonyl group to aldehydes was demonstrated with high levels of enantiospecificity. Pinacol boronic ester derivatives can be employed directly for the addition in the presence of KHF2 without the use of corresponding trifluoroborate salts where retention of the configuration was observed. Enantiomerically enriched β,γ-diaryl-substituted γ-butyrolactones were synthesized in good yields.
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Affiliation(s)
- Changwan Zhang
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Korea
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38
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Evans PA, Oliver S, Chae J. Rhodium-Catalyzed Allylic Substitution with an Acyl Anion Equivalent: Stereospecific Construction of Acyclic Quaternary Carbon Stereogenic Centers. J Am Chem Soc 2012; 134:19314-7. [DOI: 10.1021/ja306602g] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Andrew Evans
- Department of Chemistry, The University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Samuel Oliver
- Department of Chemistry, The University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Jungha Chae
- Department of Chemistry, The University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
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39
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Lennox AJJ, Lloyd-Jones GC. Preparation of Organotrifluoroborate Salts: Precipitation-Driven Equilibrium under Non-Etching Conditions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203930] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Lennox AJJ, Lloyd-Jones GC. Preparation of Organotrifluoroborate Salts: Precipitation-Driven Equilibrium under Non-Etching Conditions. Angew Chem Int Ed Engl 2012; 51:9385-8. [DOI: 10.1002/anie.201203930] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Indexed: 11/10/2022]
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41
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Grigg RD, Rigoli JW, Van Hoveln R, Neale S, Schomaker JM. Beyond benzyl grignards: facile generation of benzyl carbanions from styrenes. Chemistry 2012; 18:9391-6. [PMID: 22718528 PMCID: PMC4490829 DOI: 10.1002/chem.201200642] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Indexed: 11/07/2022]
Abstract
Benzylic functionalization is a convenient approach towards the conversion of readily available aromatic hydrocarbon feedstocks into more useful molecules. However, the formation of carbanionic benzyl species from benzyl halides or similar precursors is far from trivial. An alternative approach is the direct reaction of a styrene with a suitable coupling partner, but these reactions often involve the use of precious-metal transition-metal catalysts. Herein, we report the facile and convenient generation of reactive benzyl anionic species from styrenes. A Cu(I)-catalyzed Markovnikov hydroboration of the styrenic double bond by using a bulky pinacol borane source is followed by treatment with KOtBu to facilitate a sterically induced cleavage of the C-B bond to produce a benzylic carbanion. Quenching this intermediate with a variety of electrophiles, including CO(2), CS(2), isocyanates, and isothiocyanates, promotes C-C bond formation at the benzylic carbon atom. The utility of this methodology was demonstrated in a three-step, two-pot synthesis of the nonsteroidal anti-inflammatory drug (±)-flurbiprofen.
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Affiliation(s)
- R. David Grigg
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, Fax: (+) (001) 608-265-4534
| | - Jared W. Rigoli
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, Fax: (+) (001) 608-265-4534
| | - Ryan Van Hoveln
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, Fax: (+) (001) 608-265-4534
| | - Samuel Neale
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, Fax: (+) (001) 608-265-4534
| | - Jennifer M. Schomaker
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, Fax: (+) (001) 608-265-4534
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42
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P,N-Type benzimidazolyl phosphine ligands for the palladium-catalyzed Suzuki coupling of potassium aryltrifluoroborates and aryl chlorides. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Nishimura T, Ashouri A, Ebe Y, Maeda Y, Hayashi T. Rhodium/chiral diene-catalyzed asymmetric methylation of N-sulfonylarylimines with trimethylboroxine. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.04.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Lennox AJJ, Lloyd-Jones GC. Organotrifluoroborate Hydrolysis: Boronic Acid Release Mechanism and an Acid–Base Paradox in Cross-Coupling. J Am Chem Soc 2012; 134:7431-41. [DOI: 10.1021/ja300236k] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Guy C. Lloyd-Jones
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol,
BS8 1TS, U.K
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45
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Copper-catalyzed boration of activated alkynes. Chiral boranes via a one-pot copper-catalyzed boration and reduction protocol. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.07.061] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Preparation of chiral secondary boronic esters via copper-catalyzed enantioselective conjugate reduction of β-boronyl-β-alkyl α,β-unsaturated esters. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.07.088] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Moteki SA, Toyama K, Liu Z, Ma J, Holmes AE, Takacs JM. Two-stage optimization of a supramolecular catalyst for catalytic asymmetric hydroboration. Chem Commun (Camb) 2012; 48:263-5. [DOI: 10.1039/c1cc16146f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Bartolucci S, Bartoccini F, Righi M, Piersanti G. Direct, Regioselective, and Chemoselective Preparation of Novel Boronated Tryptophans by Friedel–Crafts Alkylation. Org Lett 2011; 14:600-3. [DOI: 10.1021/ol203216h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Silvia Bartolucci
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Marika Righi
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
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Scott HK, Aggarwal VK. Highly Enantioselective Synthesis of Tertiary Boronic Esters and their Stereospecific Conversion to other Functional Groups and Quaternary Stereocentres. Chemistry 2011; 17:13124-32. [DOI: 10.1002/chem.201102581] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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50
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Larouche-Gauthier R, Elford TG, Aggarwal VK. Ate Complexes of Secondary Boronic Esters as Chiral Organometallic-Type Nucleophiles for Asymmetric Synthesis. J Am Chem Soc 2011; 133:16794-7. [DOI: 10.1021/ja2077813] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robin Larouche-Gauthier
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Tim G. Elford
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Varinder K. Aggarwal
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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