1
|
Li S, Hu C, Cui X, Zhang J, Liu LL, Wu L. Site‐Fixed Hydroboration of Terminal and Internal Alkenes using BX
3
/
i
Pr
2
NEt**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- 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 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chenyang Hu
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 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 China
| | - Jiong Zhang
- 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 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Liu Leo Liu
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - 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 China
| |
Collapse
|
2
|
Volochnyuk DM, Gorlova AO, Grygorenko OO. Saturated Boronic Acids, Boronates, and Trifluoroborates: An Update on Their Synthetic and Medicinal Chemistry. Chemistry 2021; 27:15277-15326. [PMID: 34499378 DOI: 10.1002/chem.202102108] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 12/13/2022]
Abstract
This review discusses recent advances in the chemistry of saturated boronic acids, boronates, and trifluoroborates. Applications of the title compounds in the design of boron-containing drugs are surveyed, with special emphasis on α-amino boronic derivatives. A general overview of saturated boronic compounds as modern tools to construct C(sp3 )-C and C(sp3 )-heteroatom bonds is given, including recent developments in the Suzuki-Miyaura and Chan-Lam cross-couplings, single-electron-transfer processes including metallo- and organocatalytic photoredox reactions, and transformations of boron "ate" complexes. Finally, an attempt to summarize the current state of the art in the synthesis of saturated boronic acids, boronates, and trifluoroborates is made, with a brief mention of the "classical" methods (transmetallation of organolithium/magnesium reagents with boron species, anti-Markovnikov hydroboration of alkenes, and the modification of alkenyl boron compounds) and a special focus on recent methodologies (boronation of alkyl (pseudo)halides, derivatives of carboxylic acids, alcohols, and primary amines, boronative C-H activation, novel approaches to alkene hydroboration, and 1,2-metallate-type rearrangements).
Collapse
Affiliation(s)
- Dmitriy M Volochnyuk
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv, 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01601, Ukraine.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv, 02094, Ukraine
| | - Alina O Gorlova
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv, 02094, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv, 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01601, Ukraine
| |
Collapse
|
3
|
Li S, Hu C, Cui X, Zhang J, Liu LL, Wu L. Site-Fixed Hydroboration of Terminal and Internal Alkenes using BX 3 / i Pr 2 NEt*. Angew Chem Int Ed Engl 2021; 60:26238-26245. [PMID: 34536251 DOI: 10.1002/anie.202111978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Indexed: 12/27/2022]
Abstract
An unprecedented and general hydroboration of alkenes with BX3 (X=Br, Cl) as the boration reagent in the presence of i Pr2 NEt is reported. The addition of i Pr2 NEt not only suppresses alkene polymerization and haloboration side reactions but also provides an "H" source for hydroboration. More importantly, the site-fixed installation of a boryl group at the original position of the internal double bond is readily achieved in contrast to conventional transition-metal-catalyzed hydroboration processes. Further application to the synthesis of 1,n-diborylalkanes (n=3-10) is also demonstrated. Preliminary mechanistic studies reveal a major reaction pathway that involves radical species and operates through a frustrated Lewis pair type single-electron-transfer mechanism.
Collapse
Affiliation(s)
- 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, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chenyang Hu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, 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, China
| | - Jiong Zhang
- 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, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liu Leo Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - 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, China
| |
Collapse
|
4
|
Zhang L, Huang X, Wang J, He W. Hypervalent Iodine‐Mediated and Traceless Fluorine‐Oriented: Synthesis of 5‐Methyl‐1,2,3,4‐tetrahydropyridine from Unactivated Alkenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lu‐Wen Zhang
- Department of Chemistry School of Pharmacy The Fourth Military Medical University Xi'an 710032 P. R. China
| | - Xie Huang
- State Key Laboratory of Trauma Burns and Combined Injury Institute of Combined Injury Chongqing Engineering Research Center for Nanomedicine Department College of Preventive Medicine Third Military Medical University Chongqing 400038 P. R. China
| | - Jia‐Qi Wang
- Department of Chemistry School of Pharmacy The Fourth Military Medical University Xi'an 710032 P. R. China
| | - Wei He
- Department of Chemistry School of Pharmacy The Fourth Military Medical University Xi'an 710032 P. R. China
| |
Collapse
|
5
|
He Y, Cao J, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Aminopalladation–Heck Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yu‐Ping He
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Jian Cao
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Hua Wu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| |
Collapse
|
6
|
He Y, Cao J, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Aminopalladation–Heck Cascade. Angew Chem Int Ed Engl 2021; 60:7093-7097. [DOI: 10.1002/anie.202016001] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/26/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Yu‐Ping He
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Jian Cao
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Hua Wu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304, 1015 Lausanne Switzerland
| |
Collapse
|
7
|
Du R, Liu L, Xu S. Iridium‐Catalyzed Regio‐ and Enantioselective Borylation of Unbiased Methylene C(sp
3
)−H Bonds at the Position β to a Nitrogen Center. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rongrong Du
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Center for Excellence in Molecular Synthesis Suzhou Research Institute Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Luhua Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Center for Excellence in Molecular Synthesis Suzhou Research Institute Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Center for Excellence in Molecular Synthesis Suzhou Research Institute Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 311121 China
| |
Collapse
|
8
|
Du R, Liu L, Xu S. Iridium-Catalyzed Regio- and Enantioselective Borylation of Unbiased Methylene C(sp 3 )-H Bonds at the Position β to a Nitrogen Center. Angew Chem Int Ed Engl 2021; 60:5843-5847. [PMID: 33325578 DOI: 10.1002/anie.202016009] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Indexed: 11/11/2022]
Abstract
Reported herein is the pyrazole-directed iridium-catalyzed enantioselective borylation of unbiased methylene C-H bonds at the position β to a nitrogen center. The combination of a chiral bidentate boryl ligand, iridium precursor, and pyrazole directing group was responsible for the high regio- and enantioselectivity observed. The method tolerated a vast array of functional groups to afford the corresponding C(sp3 )-H functionalization products with good to excellent enantioselectivity.
Collapse
Affiliation(s)
- Rongrong Du
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Luhua Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
| |
Collapse
|
9
|
Wang D, Xue X, Houk KN, Shi Z. Mild Ring‐Opening 1,3‐Hydroborations of Non‐Activated Cyclopropanes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Di Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Xiao‐Song Xue
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
- State Key Laboratory of Elemento-organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Kendall N. Houk
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| |
Collapse
|
10
|
Wang D, Xue X, Houk KN, Shi Z. Mild Ring‐Opening 1,3‐Hydroborations of Non‐Activated Cyclopropanes. Angew Chem Int Ed Engl 2018; 57:16861-16865. [DOI: 10.1002/anie.201811036] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Di Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Xiao‐Song Xue
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
- State Key Laboratory of Elemento-organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Kendall N. Houk
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| |
Collapse
|
11
|
Lv J, Zhao B, Liu L, Han Y, Yuan Y, Shi Z. Boron Trichloride‐Mediated Synthesis of Indoles
via
the Aminoboration of Alkynes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800509] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jiahang Lv
- College of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225002 People's Republic of China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 People's Republic of China
| | - Binlin Zhao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 People's Republic of China
| | - Li Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and TechnologyChangzhou University Changzhou 213164 People's Republic of China
| | - Ying Han
- College of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225002 People's Republic of China
| | - Yu Yuan
- College of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225002 People's Republic of China
| | - Zhuangzhi Shi
- College of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225002 People's Republic of China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 People's Republic of China
| |
Collapse
|
12
|
Li X, Hall DG. Diastereocontrolled Monoprotodeboronation of β-Sulfinimido gem
-Bis(boronates): A General and Stereoselective Route to α,β-Disubstituted β-Aminoalkylboronates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804277] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiangyu Li
- Department of Chemistry, 4-010 CCIS; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| | - Dennis G. Hall
- Department of Chemistry, 4-010 CCIS; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| |
Collapse
|
13
|
Li X, Hall DG. Diastereocontrolled Monoprotodeboronation of β-Sulfinimido gem
-Bis(boronates): A General and Stereoselective Route to α,β-Disubstituted β-Aminoalkylboronates. Angew Chem Int Ed Engl 2018; 57:10304-10308. [PMID: 29932490 DOI: 10.1002/anie.201804277] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/08/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Xiangyu Li
- Department of Chemistry, 4-010 CCIS; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| | - Dennis G. Hall
- Department of Chemistry, 4-010 CCIS; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| |
Collapse
|
14
|
Geier SJ, Vogels CM, Mellonie NR, Daley EN, Decken A, Doherty S, Westcott SA. The Phosphinoboration ofN-Heterocycles. Chemistry 2017; 23:14485-14499. [DOI: 10.1002/chem.201702203] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Niall R. Mellonie
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Erika N. Daley
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Andreas Decken
- Department of Chemistry; University of New Brunswick; Fredericton NB E3B 5A3 Canada
| | - Simon Doherty
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| |
Collapse
|
15
|
Wei Y, Liu D, Qing X, Xu L. Mechanistic Insights on a Metal-Free Borylative Cyclization of Alkynes Using BCl3
: A Theoretical Investigation. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yu Wei
- Department School of Chemistry and Chemical Engineering; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Dongwei Liu
- Department School of Chemistry and Chemical Engineering; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Xinlin Qing
- Department School of Chemistry and Chemical Engineering; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Liang Xu
- Department School of Chemistry and Chemical Engineering; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| |
Collapse
|
16
|
Kim J, Ko K, Cho SH. Diastereo- and Enantioselective Synthesis of β-Aminoboronate Esters by Copper(I)-Catalyzed 1,2-Addition of 1,1-Bis[(pinacolato)boryl]alkanes to Imines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705829] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jeongho Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| | - Kwangwook Ko
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| | - Seung Hwan Cho
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| |
Collapse
|
17
|
Kim J, Ko K, Cho SH. Diastereo- and Enantioselective Synthesis of β-Aminoboronate Esters by Copper(I)-Catalyzed 1,2-Addition of 1,1-Bis[(pinacolato)boryl]alkanes to Imines. Angew Chem Int Ed Engl 2017; 56:11584-11588. [DOI: 10.1002/anie.201705829] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/10/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Jeongho Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| | - Kwangwook Ko
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| | - Seung Hwan Cho
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Rep. of Korea
| |
Collapse
|
18
|
Warner AJ, Churn A, McGough JS, Ingleson MJ. BCl
3
‐Induced Annulative Oxo‐ and Thioboration for the Formation of C3‐Borylated Benzofurans and Benzothiophenes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Andrew J. Warner
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Anna Churn
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - John S. McGough
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Michael J. Ingleson
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| |
Collapse
|
19
|
Warner AJ, Churn A, McGough JS, Ingleson MJ. BCl 3 -Induced Annulative Oxo- and Thioboration for the Formation of C3-Borylated Benzofurans and Benzothiophenes. Angew Chem Int Ed Engl 2016; 56:354-358. [PMID: 27897368 PMCID: PMC5396270 DOI: 10.1002/anie.201610014] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Indexed: 11/06/2022]
Abstract
BCl3 -induced borylative cyclization of aryl-alkynes possessing ortho-EMe (E=S, O) groups represents a simple, metal-free method for the formation of C3-borylated benzothiophenes and benzofurans. The dichloro(heteroaryl)borane primary products can be protected to form synthetically ubiquitous pinacol boronate esters or used in situ in Suzuki-Miyaura cross couplings to generate 2,3-disubstituted heteroarenes from simple alkyne precursors in one pot. In a number of cases alkyne trans-haloboration occurs alongside, or instead of, borylative cyclization and the factors controlling the reaction outcome are determined.
Collapse
Affiliation(s)
- Andrew J Warner
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Anna Churn
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - John S McGough
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Michael J Ingleson
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| |
Collapse
|
20
|
Faizi DJ, Davis AJ, Meany FB, Blum SA. Catalyst-Free Formal Thioboration to Synthesize Borylated Benzothiophenes and Dihydrothiophenes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Darius J. Faizi
- Department of Chemistry; University of California, Irvine; Irvine CA 92697 USA
| | - Ashlee J. Davis
- Department of Chemistry; University of California, Irvine; Irvine CA 92697 USA
| | - Fiach B. Meany
- Department of Chemistry; University of California, Irvine; Irvine CA 92697 USA
| | - Suzanne A. Blum
- Department of Chemistry; University of California, Irvine; Irvine CA 92697 USA
| |
Collapse
|
21
|
Faizi DJ, Davis AJ, Meany FB, Blum SA. Catalyst-Free Formal Thioboration to Synthesize Borylated Benzothiophenes and Dihydrothiophenes. Angew Chem Int Ed Engl 2016; 55:14286-14290. [PMID: 27735114 DOI: 10.1002/anie.201608090] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/22/2016] [Indexed: 12/30/2022]
Abstract
The first ring-forming thioboration reaction of C-C π bonds is reported. This catalyst-free method proceeds in the presence of a commercially available external electrophilic boron source (B-chlorocatecholborane) in good to high yields. The method is scalable and tolerates a variety of functional groups that are intolerant of other major borylation methods. The resulting borylated benzothiophenes participate in a variety of in situ derivatization reactions, showcasing that these borylated intermediates do not need to be isolated prior to downstream functionalization. This methodology has been extended to the synthesis of borylated dihydrothiophenes. Mechanistic experiments suggest that the operative mechanistic pathway is through boron-induced activation of the alkyne followed by electrophilic cyclization, as opposed to S-B σ bond formation, providing a mechanistically distinct pathway to the thioboration of C-C π bonds.
Collapse
Affiliation(s)
- Darius J Faizi
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Ashlee J Davis
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Fiach B Meany
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Suzanne A Blum
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA.
| |
Collapse
|