1
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Zhou Y, Jiang Q, Cheng Y, Hu M, Duan XH, Liu L. Photoredox-Catalyzed Acylchlorination of α-CF 3 Alkenes with Acyl Chloride and Application as Masked Access to β-CF 3-enones. Org Lett 2024; 26:2656-2661. [PMID: 38526445 DOI: 10.1021/acs.orglett.4c00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
We disclose a photocatalytic strategy that simultaneously addresses the construction of trifluoromethylated quaternary carbon centers and the preparation of β-CF3-enones through radical difunctionalization of α-CF3 alkenes with acyl chlorides. This method is characterized by its broad functional group compatibility, high efficiency, and atom economy. The versatility of this transformation is poised to broaden the applications of α-CF3 alkenes, providing new pathways for the rapid assembly of structurally diverse fluorinated compounds.
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Affiliation(s)
- Youkang Zhou
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Qi Jiang
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yangyang Cheng
- Key Laboratory for Tumor Precision Medicine of Shaanxi Province and Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an 710061, China
| | - Mingyou Hu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin-Hua Duan
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Le Liu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
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2
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Keerthika K, Muhammed S B, Geetharani K. A Metal-Free and Operationally Simple Radical Trifluoromethylative Borylation of Unactivated Alkenes. Chemistry 2024; 30:e202303468. [PMID: 37962392 DOI: 10.1002/chem.202303468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/15/2023]
Abstract
We herein describe a protocol to synthesize trifluoromethylated alkyl boronates from alkenes by the mutual activation of the Togni II and the bis(catecholato)diboron reagents in the absence of any catalyst and additives. This reaction enables synthesizing a series of trifluoromethylated alkyl boronates using unactivated alkenes, including natural products and drug derivatives, in a regioselective manner. Moreover, the synthetic utility of the boronic ester present in the product allows access to a range of trifluoromethyl containing compounds. The radical trapping and gas detection experiments reveal that the more Lewis acidic diboron reagent determines the rapid formation of trifluoromethyl and boron centered radicals.
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Affiliation(s)
- K Keerthika
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bengaluru, 560012, India
| | - Bazil Muhammed S
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bengaluru, 560012, India
| | - K Geetharani
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore, Bengaluru, 560012, India
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3
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Zhao T, Xu H, Tian Y, Tang X, Dang Y, Ge S, Ma J, Zhang F. Copper-Catalyzed Regio- and Enantioselective Hydroboration of Difluoroalkyl-Substituted Internal Alkenes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304194. [PMID: 37880870 PMCID: PMC10724385 DOI: 10.1002/advs.202304194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/28/2023] [Indexed: 10/27/2023]
Abstract
Catalytic asymmetric hydroboration of fluoroalkyl-substituted alkenes is a straightforward approach to access chiral small molecules possessing both fluorine and boron atoms. However, enantioselective hydroboration of fluoroalkyl-substituted alkenes without fluorine elimination has been a long-standing challenge in this field. Herein, a copper-catalyzed hydroboration of difluoroalkyl-substituted internal alkenes with high levels of regio- and enantioselectivities is reported. The native carbonyl directing group, copper hydride system, and bisphosphine ligand play crucial roles in suppressing the undesired fluoride elimination. This atom-economic protocol provides a practical synthetic platform to obtain a wide scope of enantioenriched secondary boronates bearing the difluoromethylene moieties under mild conditions. Synthetic applications including functionalization of biorelevant molecules, versatile functional group interconversions, and preparation of difluoroalkylated Terfenadine derivative are also demonstrated.
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Affiliation(s)
- Tao‐Qian Zhao
- Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou350207P. R. China
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
- Department of ChemistryNational University of Singapore3 Science Drive 3Singapore117543Singapore
| | - Hui Xu
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
| | - Yu‐Chen Tian
- Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou350207P. R. China
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
| | - Xiaodong Tang
- Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou350207P. R. China
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
| | - Yanfeng Dang
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
| | - Shaozhong Ge
- Department of ChemistryNational University of Singapore3 Science Drive 3Singapore117543Singapore
| | - Jun‐An Ma
- Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou350207P. R. China
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
| | - Fa‐Guang Zhang
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology (Ministry of Education)Tianjin UniversityTianjin300072P. R. China
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4
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Dong T, Ye Y, Wang Y, Cheung KPS, Tsui GC. Synthesis of Difluoromethylated Alkenes via Copper-Catalyzed Protodefluorination of β-(Trifluoromethyl)styrenes. Chem Asian J 2023; 18:e202300655. [PMID: 37591794 DOI: 10.1002/asia.202300655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/19/2023]
Abstract
Under typical copper-catalyzed hydroboration conditions, β-(trifluoromethyl)styrenes demonstrate unusal reactivities by forming difluoromethylated alkenes via a net protodefluorination process. This is also distinct from trifluoromethyl alkenes with alkyl substituents where defluoroborylation products predominate.
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Affiliation(s)
- Tao Dong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yibin Ye
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Kelvin Pak Shing Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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5
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Hu M, Tan BB, Ge S. Enantioselective Cobalt-Catalyzed Hydroboration of Fluoroalkyl-Substituted Alkenes to Access Chiral Fluoroalkylboronates. J Am Chem Soc 2022; 144:15333-15338. [PMID: 35953077 PMCID: PMC9434995 DOI: 10.1021/jacs.2c06488] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Selective defluoroborylation and asymmetric hydroboration
reactions
of fluoroalkyl-substituted terminal alkenes with pinacolborane (HBpin)
have been developed with cobalt catalysts generated from Co(acac)2 and bisphosphine ligands. A variety of fluoroalkyl-substituted
terminal alkenes undergo this enantioselective hydroboration, affording
the corresponding chiral alkylboronates containing fluoroalkyl-substituted
stereogenic carbon centers with high enantioselectivity (up to 98% ee). This asymmetric hydroboration provides a versatile
foundation for the synthesis of a variety of chiral organofluorine
compounds containing fluoroalkyl-substituted stereogenic carbon centers.
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Affiliation(s)
- Ming Hu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Boon Beng Tan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Shaozhong Ge
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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6
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Ma X, Kuang Z, Song Q. Recent Advances in the Construction of Fluorinated Organoboron Compounds. JACS AU 2022; 2:261-279. [PMID: 35252978 PMCID: PMC8889561 DOI: 10.1021/jacsau.1c00129] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Indexed: 05/05/2023]
Abstract
Fluorinated organoboron compounds are important synthetic building blocks that combine the unique characteristics of a fluorinated motif with the versatile synthetic applications of organoboron moiety. This review article guides the research on fluorinated organoboron compounds mainly from four aspects in recent years: selective monodefluoroborylation of polyfluoroarenes and polyfluoroalkenes, selective borylation of fluorinated substrates, selective fluorination of organoboron compounds, and borofluorination of alkynes/olefins. In addition, this review will provide a necessary guidance and inspiration for the research on the valuable synthetic building block fluorinated organoboron compounds.
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Affiliation(s)
- Xingxing Ma
- Key
Laboratory of Molecule Synthesis and Function Discovery, Fujian Province
University, College of Chemistry at Fuzhou
University, Fuzhou, Fujian 350108, China
| | - Zhijie Kuang
- Institute
of Next Generation Matter Transformation, College of Materials Science
Engineering & Chemical Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Key
Laboratory of Molecule Synthesis and Function Discovery, Fujian Province
University, College of Chemistry at Fuzhou
University, Fuzhou, Fujian 350108, China
- Institute
of Next Generation Matter Transformation, College of Materials Science
Engineering & Chemical Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
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7
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Das KK, Mahato S, Hazra S, Panda S. Development of Methods to the Synthesis of β-Boryl Acyls, Imines and Nitriles. CHEM REC 2022; 22:e202100290. [PMID: 35088513 DOI: 10.1002/tcr.202100290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 12/30/2022]
Abstract
Organoboron compounds are highly important and versatile synthetic intermediates for the preparation of a wide range of organic molecules. Organoboron compounds have drawn significant attention among organic chemists due to their Lewis acidic property, non-toxicity, and commercial availability. Over the last several decades, there has been a substantial development of new organoboron compounds, useful in organic synthesis. Among all other organoboron compounds, β-boryl carbonyl compounds are the important ones. The β-boryl compounds have appeared as promising intermediates for various synthetic transformations. The 1,4-conjugate addition of diboron reagents to carbon-carbon double bond in the presence of different transition-metal catalysts has been extensively reported by various research groups across the globe. This mini-review outlines the numerous racemic as well as asymmetric β-borylation methods developed to date.
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Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Somenath Mahato
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Subrata Hazra
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Santanu Panda
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
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8
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Bose SK, Mao L, Kuehn L, Radius U, Nekvinda J, Santos WL, Westcott SA, Steel PG, Marder TB. First-Row d-Block Element-Catalyzed Carbon-Boron Bond Formation and Related Processes. Chem Rev 2021; 121:13238-13341. [PMID: 34618418 DOI: 10.1021/acs.chemrev.1c00255] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Organoboron reagents represent a unique class of compounds because of their utility in modern synthetic organic chemistry, often affording unprecedented reactivity. The transformation of the carbon-boron bond into a carbon-X (X = C, N, and O) bond in a stereocontrolled fashion has become invaluable in medicinal chemistry, agrochemistry, and natural products chemistry as well as materials science. Over the past decade, first-row d-block transition metals have become increasingly widely used as catalysts for the formation of a carbon-boron bond, a transformation traditionally catalyzed by expensive precious metals. This recent focus on alternative transition metals has enabled growth in fundamental methods in organoboron chemistry. This review surveys the current state-of-the-art in the use of first-row d-block element-based catalysts for the formation of carbon-boron bonds.
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Affiliation(s)
- Shubhankar Kumar Bose
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India
| | - Lujia Mao
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, 571199 Haikou, Hainan, P. R. China
| | - Laura Kuehn
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jan Nekvinda
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Stephen A Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Patrick G Steel
- Department of Chemistry, University of Durham, Science Laboratories South Road, Durham DH1 3LE, U.K
| | - Todd B Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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9
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Hu J, Ferger M, Shi Z, Marder TB. Recent advances in asymmetric borylation by transition metal catalysis. Chem Soc Rev 2021; 50:13129-13188. [PMID: 34709239 DOI: 10.1039/d0cs00843e] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral organoboronates have played a critical role in organic chemistry and in the development of materials science and pharmaceuticals. Much effort has been devoted to exploring synthetic methodologies for the preparation of these compounds during the past few decades. Among the known methods, asymmetric catalysis has emerged as a practical and highly efficient strategy for their straightforward preparation, and recent years have witnessed remarkable advances in this respect. Approaches such as asymmetric borylative addition, asymmetric allylic borylation and stereospecific cross-coupling borylation, have been extensively explored and well established employing transition-metal catalysis with a chiral ligand. This review provides a comprehensive overview of transition metal-catalysed asymmetric borylation processes to construct carbon-boron, carbon-carbon, and other carbon-heteroatom bonds. It summarises a range of recent achievements in this area of research, with considerable attention devoted to the reaction modes and the mechanisms involved.
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Affiliation(s)
- Jiefeng Hu
- Institute of Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. .,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 211816 Nanjing, China
| | - Matthias Ferger
- Institute of Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 210093 Nanjing, China.
| | - Todd B Marder
- Institute of Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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10
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Wu J, Wu H, Li X, Liu X, Zhao Q, Huang G, Zhang C. Copper-Catalyzed Highly Selective Protoboration of CF 3 -Containing 1,3-Dienes. Angew Chem Int Ed Engl 2021; 60:20376-20382. [PMID: 34146388 DOI: 10.1002/anie.202105896] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/02/2021] [Indexed: 12/15/2022]
Abstract
The copper-catalyzed highly selective protoboration of CF3 -containing conjugated diene with proton source and B2 Pin2 has been developed. This chemistry could suppress the well-known defluorination and provide borated reagents with an intact CF3 -group. Further studies indicated that the functional group tolerance of this chemistry is very well, and the products could be used as versatile precursors for different types of transformations. Importantly, using chiral diphosphine ligand, we have developed the first example for using such starting material to synthesis allylic boron-reagents which bearing a CF3 -containing chiral center. Notably, the reaction mechanism was intensively studied by DFT calculations, which could reveal the reason that defluorination was inhibited.
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Affiliation(s)
- Juanjuan Wu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Hongli Wu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Xinzhi Li
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Xinyu Liu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Qian Zhao
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Genping Huang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Chun Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
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11
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Wu J, Wu H, Li X, Liu X, Zhao Q, Huang G, Zhang C. Copper‐Catalyzed Highly Selective Protoboration of CF
3
‐Containing 1,3‐Dienes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Juanjuan Wu
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Hongli Wu
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Xinzhi Li
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Xinyu Liu
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Qian Zhao
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Genping Huang
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
| | - Chun Zhang
- Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China
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12
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Zhang S, Duan X, Li P. Access to Stereodefined Multifunctionalized β,
γ‐Unsaturated
Ketones
via
Chemo‐, Regio‐ and Diastereoselective
Copper‐Catalyzed
Diborylation of
Cross‐Conjugated
Enynones
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000475] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shuai Zhang
- Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 China
| | - Xinhua Duan
- School of Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Pengfei Li
- Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 China
- State Key Laboratory of Elemento‐Organic Chemistry, Nankai University Tianjin 300071 China
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
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13
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Jonker SJT, Jayarajan R, Kireilis T, Deliaval M, Eriksson L, Szabó KJ. Organocatalytic Synthesis of α-Trifluoromethyl Allylboronic Acids by Enantioselective 1,2-Borotropic Migration. J Am Chem Soc 2020; 142:21254-21259. [PMID: 33270462 PMCID: PMC7760092 DOI: 10.1021/jacs.0c09923] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
![]()
Chiral α-substituted allylboronic
acids were synthesized
by asymmetric homologation of alkenylboronic acids using CF3/TMS-diazomethanes in the presence of BINOL catalyst and ethanol.
The chiral α-substituted allylboronic acids were reacted with
aldehydes or oxidized to alcohols in situ with a high degree of chirality
transfer. The oxygen-sensitive allylboronic acids can be purified
via their isolated diaminonaphthalene (DanH)-protected derivatives.
The highly reactive purified allylboronic acids reacted in a self-catalyzed
reaction at room temperature with ketones, imines, and indoles to
give congested trifluoromethylated homoallylic alcohols/amines with
up to three contiguous stereocenters.
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Affiliation(s)
- Sybrand J T Jonker
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Ramasamy Jayarajan
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Tautvydas Kireilis
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Marie Deliaval
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Kálmán J Szabó
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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14
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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; 59:21875-21879. [PMID: 32840957 DOI: 10.1002/anie.202008138] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/27/2020] [Indexed: 01/01/2023]
Abstract
Redox-active esters (RAEs) as active radical precursors have been extensively studied for C-B bond formations. However, the analogous transformations of stabilized radicals from the corresponding acid precursors remain challenging owing to the strong preference towards single-electron oxidation to the stable carbocations. This work describes a general strategy for rapid access to various aliphatic and aromatic boronic esters by mild photoinduced decarboxylative borylation. Both aryl and alkyl radicals could be generated from the leaving group-assisted N-hydroxybenzimidoyl chloride esters, even α-CF3 substituted substrates could be activated for further elaboration.
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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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15
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Chaudhary B, Kulkarni N, Saiyed N, Chaurasia M, Desai S, Potkule S, Sharma S. β
‐Trifluoromethyl
α
,
β
‐unsaturated Ketones: Efficient Building Blocks for Diverse Trifluoromethylated Molecules. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bharatkumar Chaudhary
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Neeraj Kulkarni
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Nehanaz Saiyed
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Meenakshi Chaurasia
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Surbhi Desai
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Sagar Potkule
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
| | - Satyasheel Sharma
- Department of Natural Products National Institute of Pharmaceutical Education and Research Ahmedabad (NIPER−A) Gandhinagar Gujarat 382355 INDIA
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16
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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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17
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Zhang J, Wang S, Zhang Y, Feng Z. Iron‐Catalyzed Cross‐Coupling Reactions for the Construction of Carbon‐Heteroatom Bonds. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Juan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng Road Chongqing 401331 China
| | - Siyu Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng Road Chongqing 401331 China
| | - Yun Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng Road Chongqing 401331 China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng Road Chongqing 401331 China
- Sichuan Key Laboratory of Medical Imaging & Department of Chemistry School of Preclinical Medicine North Sichuan Medical College 234 Fujiang Road Nanchong Sichuan 637000 China
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18
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Chen G, Wang L, Liu X, Liu P. Visible‐Light‐Induced Radical Defluoroborylation of Trifluoromethyl Alkenes: An Access to
gem
‐Difluoroallylboranes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000257] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guojun Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Liling Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
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19
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George J, Kim HY, Oh K. Copper(i)/DM-SEGPHOS-catalyzed enantio- and diastereoselective conjugate boration to α-alkylidene-γ-lactams. Org Chem Front 2020. [DOI: 10.1039/c9qo01504c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A combination of CuCl and DM-SEGPHOS catalyst system has allowed the development of highly enantioselective and diastereoselective conjugate addition of bis(pinacolato)diboron to α-alkylidene-γ-lactams.
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Affiliation(s)
- Jimil George
- Center for Metareceptome Research
- Graduate School of Pharmaceutical Sciences
- Chung-Ang University
- Seoul 06974
- Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research
- Graduate School of Pharmaceutical Sciences
- Chung-Ang University
- Seoul 06974
- Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research
- Graduate School of Pharmaceutical Sciences
- Chung-Ang University
- Seoul 06974
- Republic of Korea
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20
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Xu X, He Y, Zhou J, Li X, Zhu B, Chang J. Organocatalytic Asymmetric Michael Addition of Pyrazol-5-ones to β-Trifluoromethyl-α,β-unsaturated Ketones: Stereocontrolled Construction of Vicinal Quaternary and Tertiary Stereocenters. J Org Chem 2019; 85:574-584. [DOI: 10.1021/acs.joc.9b02676] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xinyao Xu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Yanmin He
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Jingqi Zhou
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Xinjuan Li
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Bo Zhu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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21
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Hu WF, Zhao JQ, Chen XZ, Zhou MQ, Zhang XM, Xu XY, Yuan WC. Organocatalytic enantioselective sulfa-Michael addition of thiocarboxylic acids to β-trifluoromethyl-α,β-unsaturated ketones for the construction of stereogenic carbon center bearing a sulfur atom and a trifluoromethyl group. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Huang X, Garcia-Borràs M, Miao K, Kan SBJ, Zutshi A, Houk KN, Arnold FH. A Biocatalytic Platform for Synthesis of Chiral α-Trifluoromethylated Organoborons. ACS CENTRAL SCIENCE 2019; 5:270-276. [PMID: 30834315 PMCID: PMC6396380 DOI: 10.1021/acscentsci.8b00679] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Indexed: 05/04/2023]
Abstract
There are few biocatalytic transformations that produce fluorine-containing molecules prevalent in modern pharmaceuticals. To expand the scope of biocatalysis for organofluorine synthesis, we have developed an enzymatic platform for highly enantioselective carbene B-H bond insertion to yield versatile α-trifluoromethylated (α-CF3) organoborons, an important class of organofluorine molecules that contain stereogenic centers bearing both CF3 and boron groups. In contrast to current "carbene transferase" enzymes that use a limited set of simple diazo compounds as carbene precursors, this system based on Rhodothermus marinus cytochrome c (Rma cyt c) can accept a broad range of trifluorodiazo alkanes and deliver versatile chiral α-CF3 organoborons with total turnovers up to 2870 and enantiomeric ratios up to 98.5:1.5. Computational modeling reveals that this broad diazo scope is enabled by an active-site environment that directs the alkyl substituent on the heme CF3-carbene intermediate toward the solvent-exposed face, thereby allowing the protein to accommodate diazo compounds with diverse structural features.
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Affiliation(s)
- Xiongyi Huang
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Marc Garcia-Borràs
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Kun Miao
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - S. B. Jennifer Kan
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Arjun Zutshi
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Frances H. Arnold
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
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23
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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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24
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Zhao X, Xu S, He J, Zhou Y, Cao S. Highly regio- and diastereoselective Cu-catalyzed hydroborylation and hydrosilylation of difluorocyclopropenes with B2pin2 and PhMe2Si–Bpin. Org Chem Front 2019. [DOI: 10.1039/c9qo00580c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the synthesis of trans-difluorocyclopropyl boronates and silanes through a Cu-catalyzed hydroborylation and hydrosilylation of difluorocyclopropenes was reported.
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Affiliation(s)
- Xianghu Zhao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Sixue Xu
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Jingjing He
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Yao Zhou
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
| | - Song Cao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- China
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25
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Zhou Y, Zhang C, Zhao Y, Li D, Zhao J, Wang Z, Qu J. Base-Promoted Double-Bond-Migration/Hydrolysis/Isomerization of 4-Aryl-1,1,1-trifluorobut-2-en-2-yl Trifluoromethanesulfonates: A Metal-Free Approach to β-Trifluoromethyl Ketones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuhan Zhou
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Chunxia Zhang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Yilong Zhao
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Dong Li
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Zhaotian Wang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; Linggong road 2 116024 Dalian PR China
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26
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Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810204] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
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27
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Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018; 57:16544-16548. [DOI: 10.1002/anie.201810204] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
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28
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Synthesis of chiral α-trifluoromethyl alcohols and ethers via enantioselective Hiyama cross-couplings of bisfunctionalized electrophiles. Nat Commun 2018; 9:3566. [PMID: 30177813 PMCID: PMC6120892 DOI: 10.1038/s41467-018-05946-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 07/19/2018] [Indexed: 11/19/2022] Open
Abstract
Methods for synthesis of chiral organic compounds bearing trifluoromethyl-substituted stereocenters are of great interest for agrochemical and pharmaceutical labs and industries in their search for new bioactive materials. We report on employment of bisfunctionalized electrophiles, bearing both a trifluoromethyl and a functional group as direct substituents of the reactive center, in cross-coupling reactions. We exemplify this concept in the asymmetric synthesis of enantioenriched α-trifluoromethyl- and perfluoroalkyl-containing benzylic and allylic ethers and alcohols by nickel-catalyzed stereoconvergent Hiyama cross-coupling reaction. Substrate electrophiles are conveniently prepared in few steps from trifluoroacetic acid. The method represents a conceptually different approach to chiral CF3-substituted alcohols and ethers and allows for a rapid catalytic preparation of a wide range of these valuable compounds in high yields and enantioselectivity. Compounds containing stereocenters bearing -CF3 groups, especially in proximity of heteroatoms, are of great interest for drug and agrochemicals development. Here, the authors report a nickel-catalyzed Hiyama cross-coupling methodology for the asymmetric synthesis of valuable alpha-trifluoromethyl alcohols and ethers.
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29
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Liu B, Wu HH, Zhang J. Cu(II)-Catalyzed Enantioselective β-Boration of β-Trifluoromethyl, β,β-Disubstituted Enones and Esters: Construction of a CF3- and Boron-Containing Quaternary Stereocenter. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02543] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bing Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, People’s Republic of China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, People’s Republic of China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People’s Republic of China
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30
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Zheng K, Liu X, Feng X. Recent Advances in Metal-Catalyzed Asymmetric 1,4-Conjugate Addition (ACA) of Nonorganometallic Nucleophiles. Chem Rev 2018; 118:7586-7656. [PMID: 30047721 DOI: 10.1021/acs.chemrev.7b00692] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The metal-catalyzed asymmetric conjugate addition (ACA) reaction has emerged as a general and powerful approach for the construction of optically active compounds and is among the most significant and useful reactions in synthetic organic chemistry. In recent years, great progress has been made in this area with the use of various chiral metal complexes based on different chiral ligands. This review provides comprehensive and critical information on the enantioselective 1,4-conjugate addition of nonorganometallic (soft) nucleophiles and their importance in synthetic applications. The literature is covered from the last 10 years, and a number of examples from before 2007 are included as background information. The review is divided into multiple parts according to the type of nucleophile involved in the reaction (such as C-, B-, O-, N-, S-, P-, and Si-centered nucleophiles) and metal catalyst systems used.
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Affiliation(s)
- Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
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31
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Jiang Q, Guo T, Gao R, Wang Q, Lou J, Yu Z. α,β-Unsaturated N-Acylindoles: An Alternative Class of Michael Acceptors and Their Application in Asymmetric Borylation. J Org Chem 2018; 83:7981-7993. [DOI: 10.1021/acs.joc.8b00831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Quanbin Jiang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
| | - Tenglong Guo
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
| | - Runli Gao
- State Key Laboratory of NBC Protection for Civilian, Yang Fang Town, Changping District, Beijing 102205, People’s Republic of China
| | - Quannan Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jiang Lou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People’s Republic of China
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32
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Jennifer Kan SB, Huang X, Gumulya Y, Chen K, Arnold FH. Genetically programmed chiral organoborane synthesis. Nature 2017; 552:132-136. [PMID: 29186119 PMCID: PMC5819735 DOI: 10.1038/nature24996] [Citation(s) in RCA: 199] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 11/02/2017] [Indexed: 12/20/2022]
Abstract
Recent advances in enzyme engineering and design have expanded nature's catalytic repertoire to functions that are new to biology. However, only a subset of these engineered enzymes can function in living systems. Finding enzymatic pathways that form chemical bonds that are not found in biology is particularly difficult in the cellular environment, as this depends on the discovery not only of new enzyme activities, but also of reagents that are both sufficiently reactive for the desired transformation and stable in vivo. Here we report the discovery, evolution and generalization of a fully genetically encoded platform for producing chiral organoboranes in bacteria. Escherichia coli cells harbouring wild-type cytochrome c from Rhodothermus marinus (Rma cyt c) were found to form carbon-boron bonds in the presence of borane-Lewis base complexes, through carbene insertion into boron-hydrogen bonds. Directed evolution of Rma cyt c in the bacterial catalyst provided access to 16 novel chiral organoboranes. The catalyst is suitable for gram-scale biosynthesis, providing up to 15,300 turnovers, a turnover frequency of 6,100 h-1, a 99:1 enantiomeric ratio and 100% chemoselectivity. The enantiopreference of the biocatalyst could also be tuned to provide either enantiomer of the organoborane products. Evolved in the context of whole-cell catalysts, the proteins were more active in the whole-cell system than in purified forms. This study establishes a DNA-encoded and readily engineered bacterial platform for borylation; engineering can be accomplished at a pace that rivals the development of chemical synthetic methods, with the ability to achieve turnovers that are two orders of magnitude (over 400-fold) greater than those of known chiral catalysts for the same class of transformation. This tunable method for manipulating boron in cells could expand the scope of boron chemistry in living systems.
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Affiliation(s)
| | | | - Yosephine Gumulya
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, CA 91125, United States
| | - Kai Chen
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, CA 91125, United States
| | - Frances H. Arnold
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, CA 91125, United States
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Hoang GL, Takacs JM. Enantioselective γ-borylation of unsaturated amides and stereoretentive Suzuki-Miyaura cross-coupling. Chem Sci 2017; 8:4511-4516. [PMID: 28758006 PMCID: PMC5514528 DOI: 10.1039/c7sc01093a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 04/19/2017] [Indexed: 01/06/2023] Open
Abstract
The rhodium-catalyzed, directed catalytic asymmetric hydroboration of γ,δ-unsaturated amides affords a direct route to chiral acyclic secondary γ-borylated carbonyl derivatives in high enantiomeric purity. In contrast to a similar β-borylated amide derivative, the γ-borylated amide undergoes Suzuki-Miyaura cross-coupling with stereoretention. The utility of the boronic ester products is further illustrated by other stereospecific C-B bond transformations leading to γ-amino acid derivatives, 1,4-amino alcohols, and 5-substituted-γ-lactone and γ-lactam ring systems.
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Affiliation(s)
- Gia L Hoang
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , NE 68588-0304 , USA .
| | - James M Takacs
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , NE 68588-0304 , USA .
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