1
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Cook A, Newman SG. Alcohols as Substrates in Transition-Metal-Catalyzed Arylation, Alkylation, and Related Reactions. Chem Rev 2024; 124:6078-6144. [PMID: 38630862 DOI: 10.1021/acs.chemrev.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Alcohols are abundant and attractive feedstock molecules for organic synthesis. Many methods for their functionalization require them to first be converted into a more activated derivative, while recent years have seen a vast increase in the number of complexity-building transformations that directly harness unprotected alcohols. This Review discusses how transition metal catalysis can be used toward this goal. These transformations are broadly classified into three categories. Deoxygenative functionalizations, representing derivatization of the C-O bond, enable the alcohol to act as a leaving group toward the formation of new C-C bonds. Etherifications, characterized by derivatization of the O-H bond, represent classical reactivity that has been modernized to include mild reaction conditions, diverse reaction partners, and high selectivities. Lastly, chain functionalization reactions are described, wherein the alcohol group acts as a mediator in formal C-H functionalization reactions of the alkyl backbone. Each of these three classes of transformation will be discussed in context of intermolecular arylation, alkylation, and related reactions, illustrating how catalysis can enable alcohols to be directly harnessed for organic synthesis.
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Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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2
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Ghorai D, Garcia-Roca A, Tóth BL, Benet-Buchholz J, Kleij AW. Ni-Catalyzed Regio- and Enantioselective Homoallylic Coupling: Synthesis of Chiral Branched 1,5-Dienes Featuring a Quaternary Stereogenic Center and Mechanistic Analysis. Angew Chem Int Ed Engl 2023; 62:e202314865. [PMID: 37931062 DOI: 10.1002/anie.202314865] [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: 10/04/2023] [Revised: 11/05/2023] [Accepted: 11/06/2023] [Indexed: 11/08/2023]
Abstract
Asymmetric synthesis of small molecules comprising quaternary stereogenic carbon centers represents a challenging objective. Here regio- and enantioselective synthesis of chiral 1,5-dienes featuring quaternary stereocenters is reported via nickel-promoted by reductive homoallylic coupling. The developed methodology features an atypical preference for the formation of unusual branched regioisomers (rr >20 : 1) in a sterically challenging allylic substitution event and furnishes the products with enantiomeric ratios of up to 98 : 2 and with high chemo- and E-selectivity. A range of experimental evidences suggest that zinc plays a dual role to generate electrophilic and nucleophilic Ni(II)-allyl intermediates empowering a unique formal bimetallic cross-electrophile manifold in two separate kinetic regimes.
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Affiliation(s)
- Debasish Ghorai
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Aleria Garcia-Roca
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Balázs L Tóth
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Jordi Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Arjan W Kleij
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain
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3
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Piñeiro-Suárez M, Álvarez-Constantino AM, Fañanás-Mastral M. Copper-Catalyzed Enantioselective Borylative Allyl-Allyl Coupling of Allenes and Allylic gem-Dichlorides. ACS Catal 2023; 13:5578-5583. [PMID: 37123595 PMCID: PMC10127276 DOI: 10.1021/acscatal.3c00536] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/03/2023] [Indexed: 05/02/2023]
Abstract
A catalytic asymmetric reaction between allenes, bis(pinacolato)diboron, and allylic gem-dichlorides is reported. The method involves the coupling of a catalytically generated allyl copper species with the allylic gem-dichloride and provides chiral internal 1,5-dienes featuring (Z)-configured alkenyl boronate and alkenyl chloride units with high levels of chemo-, regio-, enantio-, and diastereoselectivity. The synthetic utility of the products is demonstrated with the synthesis of a range of optically active compounds. DFT calculations reveal key noncovalent substrate-ligand interactions that account for the enantioselectivity outcome and the diastereoselective formation of the (Z)-alkenyl chloride.
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4
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Jung Y, Yoo SY, Jin Y, You J, Han S, Yu J, Park Y, Cho SH. Iridium-Catalyzed Chemo-, Diastereo-, and Enantioselective Allyl-Allyl Coupling: Accessing All Four Stereoisomers of (E)-1-Boryl-Substituted 1,5-Dienes by Chirality Pairing. Angew Chem Int Ed Engl 2023; 62:e202218794. [PMID: 36718077 DOI: 10.1002/anie.202218794] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/29/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
Here, we report a highly chemo-, diastereo-, and enantioselective allyl-allyl coupling between branched allyl alcohols and α-silyl-substituted allylboronate esters, catalyzed by a chiral iridium complex. The α-silyl-substituted allylboronate esters can be chemoselectively coupled with allyl electrophiles, affording a diverse set of enantioenriched (E)-1-boryl-substituted 1,5-dienes in good yields, with excellent stereoselectivity. By permuting the chiral iridium catalysts and the substrates, we efficiently and selectively obtained all four stereoisomers bearing two consecutive chiral centers. Mechanistic studies via density functional theory calculations revealed the origins of the diastereo- and chemoselectivities, indicating the pivotal roles of the steric interaction, the β-silicon effect, and a rapid desilylation process. Additional synthetic modifications for preparing a variety of enantioenriched compounds containing contiguous chiral centers are also included.
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Affiliation(s)
- Yongsuk Jung
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673 (Republic of, Korea
| | - Seok Yeol Yoo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141 (Republic of, Korea
| | - Yonghoon Jin
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673 (Republic of, Korea
| | - Jaehyun You
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141 (Republic of, Korea
| | - Seungcheol Han
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673 (Republic of, Korea
| | - Jeongwoo Yu
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673 (Republic of, Korea
| | - Yoonsu Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141 (Republic of, Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673 (Republic of, Korea
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5
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Lv L, Qian H. Developments and applications of allyl-(aza)allyl coupling reactions. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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6
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Zeng Y, Yang H, Du J, Huang Q, Huang G, Xia Y. Rh-catalyzed regio-switchable cross-coupling of gem-difluorinated cyclopropanes with allylboronates to structurally diverse fluorinated dienes. Chem Sci 2022; 13:12419-12425. [PMID: 36382270 PMCID: PMC9629036 DOI: 10.1039/d2sc04118a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 10/04/2022] [Indexed: 09/23/2023] Open
Abstract
The control of linear/branched selectivity is one of the major focuses in transition-metal catalyzed allyl-allyl cross-coupling reactions, in which bond connection occurs at the terminal site of both the allyl fragments forming different types of 1,5-dienes. Herein, terminal/internal regioselectivity is investigated and found to be switchable in allyl-allyl cross-coupling reactions between gem-difluorinated cyclopropanes and allylboronates. The controlled terminal/internal regioselectivity arises from the fine-tuning of the rhodium catalytic system. Fluorinated 1,3-dienes, 1,4-dienes and 1,5-dienes are therefore produced in good yields with respectively isomerized terminal, internal, and terminal regioselectivity.
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Affiliation(s)
- Yaxin Zeng
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University Chengdu 610041 China
| | - Hui Yang
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University Chengdu 610041 China
| | - Jiayi Du
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University Chengdu 610041 China
| | - Qin Huang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University Beijing 100084 China
| | - Guoliang Huang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University Beijing 100084 China
| | - Ying Xia
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University Chengdu 610041 China
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7
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Chen C, Wang H, Li T, Lu D, Li J, Zhang X, Hong X, Lu Z. Cobalt‐Catalyzed Asymmetric Sequential Hydroboration/Isomerization/Hydroboration of 2‐Aryl Vinylcyclopropanes. Angew Chem Int Ed Engl 2022; 61:e202205619. [DOI: 10.1002/anie.202205619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Chenhui Chen
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Hongliang Wang
- Department of Chemistry Zhejiang University Hangzhou 310058 China
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
| | - Tongtong Li
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Dongpo Lu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Jiajing Li
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Xie Zhang
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of Chemistry Zhejiang University Hangzhou 310058 China
- Center of Chemistry for Frontier Technologies State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China
- Beijing National Laboratory for Molecular Sciences Zhongguancun North First Street NO. 2 Beijing 100190 China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Zhan Lu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
- College of Chemistry Zhengzhou University Zhengzhou 450001 China
- Center of Chemistry for Frontier Technologies Zhejiang University Hangzhou 310027 China
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8
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Ligand‐Controlled Palladium‐Catalyzed Regiodivergent Defluorinative Allylation of
gem
‐Difluorocyclopropanes
via
σ‐Bond Activation. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Cobalt‐Catalyzed Asymmetric Sequential Hydroboration/Isomerization/Hydroboration of 2‐Aryl Vinylcyclopropanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Sawano T, Takeuchi R. Recent advances in iridium-catalyzed enantioselective allylic substitution using phosphoramidite-alkene ligands. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00316c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This minireview describes the recent progress of iridium-catalyzed enantioselective allylic substitution using phosphoramidite-alkene ligands realizing highly enantioselective carbon–carbon and carbon–heteroatom bond formation.
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Affiliation(s)
- Takahiro Sawano
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Ryo Takeuchi
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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11
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Zhang HH, Tang M, Zhao JJ, Song C, Yu S. Enantioselective Reductive Homocoupling of Allylic Acetates Enabled by Dual Photoredox/Palladium Catalysis: Access to C2-Symmetrical 1,5-Dienes. J Am Chem Soc 2021; 143:12836-12846. [PMID: 34351745 DOI: 10.1021/jacs.1c06271] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition-metal-catalyzed reductive coupling reactions have emerged as powerful protocols to construct C-C bonds. However, the development of enantioselective C(sp3)-C(sp3) reductive coupling remains challenging. Herein, we report a highly regio-, diastereo-, and enantioselective reductive homocoupling of allylic acetates through cooperative palladium and photoredox catalysis using diisopropylethylamine or Hantzsch ester as a homogeneous organic reductant. This straightforward protocol enables the stereoselective construction of C(sp3)-C(sp3) bonds under mild reaction conditions. A series of C2-symmetrical chiral 1,5-dienes were easily prepared with excellent enantioselectivities (up to >99% ee), diastereoselectivities (up to >95:5 dr), and regioselectivities (up to >95:5 rr). The resultant chiral 1,5-dienes can be directly used as chiral ligands in asymmetric synthesis, and they can be also transformed into other valuable chiral ligands.
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Affiliation(s)
- Hong-Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Menghan Tang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Jia-Jia Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Changhua Song
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
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12
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Zhang P, Zhang M, Ji Y, Xing M, Zhao Q, Zhang C. Nickel-Catalyzed Highly Selective Hydroalkenylation of Alkenyl Boronic Esters to Access Allyl Boron. Org Lett 2020; 22:8285-8290. [PMID: 33089688 DOI: 10.1021/acs.orglett.0c02923] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Allyl boron derivatives are valuable building blocks in the synthesis of natural products and bioactive molecules. Herein, a practical strategy of nickel-catalyzed highly selective hydroalkenylation of alkenyl boronic esters was developed. Under the mild reaction conditions, a variety of allyl boronic esters were accessed with excellent chemo- and regioselectivity. The mechanism of this transformation was illustrated by control experiments and kinetic studies.
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Affiliation(s)
- Penglin Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Min Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Yuqi Ji
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Mimi Xing
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Qian Zhao
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Chun Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
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13
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Gan Y, Hu H, Liu Y. Nickel-Catalyzed Homo- and Cross-Coupling of Allyl Alcohols via Allyl Boronates. Org Lett 2020; 22:4418-4423. [PMID: 32427489 DOI: 10.1021/acs.orglett.0c01424] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A nickel-catalyzed homo- and cross-coupling of allylic alcohols to 1,5-dienes in the presence of B2pin2 with excellent regioselectivity has been developed. Mechanistic studies indicate that the reaction proceeds via sequential nickel-catalyzed borylation of allyl alcohols followed by cross-coupling of the resulting allyl boronates with allyl alcohols. The method was effectively applied to nickel-catalyzed allylation of aldehydes using allylic alcohols directly.
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Affiliation(s)
- Yi Gan
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Hui Hu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
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14
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Ji DW, He GC, Zhang WS, Zhao CY, Hu YC, Chen QA. Nickel-catalyzed allyl–allyl coupling reactions between 1,3-dienes and allylboronates. Chem Commun (Camb) 2020; 56:7431-7434. [DOI: 10.1039/d0cc02697b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nickel-hydride catalysis has been developed to facilitate the allyl–allyl cross-coupling reactions between 1,3-dienes and allyl-B(pin) in excellent regioselectivity.
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Affiliation(s)
- Ding-Wei Ji
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
- University of Chinese Academy of Sciences
| | - Gu-Cheng He
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Wei-Song Zhang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Chao-Yang Zhao
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Yan-Cheng Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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15
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Cui Q, Liao W, Tian ZY, Li Q, Yu ZX. Rh-Catalyzed Cycloisomerization of 1,7-Ene-Dienes to Synthesize trans-Divinylpiperidines: A Formal Intramolecular Addition Reaction of Allylic C-H Bond into Dienes. Org Lett 2019; 21:7692-7696. [PMID: 31524406 DOI: 10.1021/acs.orglett.9b02319] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An originally designed Rh-catalyzed [4 + 2] cycloaddition reaction of nitrogen-tethered 1,7-ene-dienes turned out to be a cycloisomerization reaction, which involves allylic C-H activation/alkene insertion into Rh-H bond/reductive elimination processes. Deuterium labeling experiments gave support to the proposed mechanism. This unexpected cycloisomerization reaction provides an efficient way to synthesize trans-divinylpiperidines from easily accessed linear 1,7-ene-dienes.
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Affiliation(s)
- Qi Cui
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
| | - Wei Liao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
| | - Zi-You Tian
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
| | - Qian Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry , Peking University , Beijing 100871 , China
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