1
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C. Thedy M, Pereira V, dos Santos CR, Belli LPA, Franco MS, J. Bortoluzzi A, Sandjo LP, Braga AL, F. de Assis F. Highly Enantioselective Lewis Acid Catalyzed Conjugate Addition of Imidazo[1,2- a]pyridines to α,β-Unsaturated 2-Acylimidazoles under Mild Conditions. J Org Chem 2024; 89:8500-8512. [PMID: 38842033 PMCID: PMC11197092 DOI: 10.1021/acs.joc.4c00445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/25/2024] [Accepted: 05/23/2024] [Indexed: 06/07/2024]
Abstract
A highly enantioselective protocol for the conjugate addition of 2-arylimidazo[1,2-a]pyridines and other imidazo derivatives to α,β-unsaturated 2-acylimidazoles is described. The method uses a previously reported chiral-at-metal rhodium catalyst and provides the corresponding adducts in yields of 25-98% with enantioselectivities up to er > 99:1. Additionally, the transformation proceeds under mild conditions using ethanol as the solvent at room temperature.
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Affiliation(s)
- Maria
Eduarda C. Thedy
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Vanessa Pereira
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Caio Rodrigo dos Santos
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Luiz Paulo A. Belli
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | | | - Adailton J. Bortoluzzi
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Louis P. Sandjo
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Antonio L. Braga
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
| | - Francisco F. de Assis
- Department of Chemistry, Universidade
Federal de Santa Catarina, Florianópolis, Santa
Catarina 88040-900, Brazil
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2
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Sośnicki JG, Borzyszkowska-Ledwig A, Idzik TJ, Lubowicz MM, Maciejewska G, Struk Ł. Divergent Synthesis of Functionalized Indenopyridin-2-ones and 2-Pyridones via Benzyl Group Transfer: Two Cases of Aza-semipinacol-Type Rearrangement. Org Lett 2022; 24:8498-8502. [DOI: 10.1021/acs.orglett.2c03361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Jacek G. Sośnicki
- West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, Szczecin 71-065, Poland
| | - Aleksandra Borzyszkowska-Ledwig
- West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, Szczecin 71-065, Poland
| | - Tomasz J. Idzik
- West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, Szczecin 71-065, Poland
| | - Magdalena M. Lubowicz
- West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, Szczecin 71-065, Poland
| | - Gabriela Maciejewska
- Wrocław University of Science and Technology, Faculty of Chemistry, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Łukasz Struk
- West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, Szczecin 71-065, Poland
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3
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Wang Z, Li B. Iridium‐Catalyzed Regiodivergent and Enantioselective Hydroalkynylation of Unactivated 1,1‐Disubstituted Alkenes. Angew Chem Int Ed Engl 2022; 61:e202201099. [DOI: 10.1002/anie.202201099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Zi‐Xuan Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 China
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4
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Wang Z, Li B. Iridium‐Catalyzed Regiodivergent and Enantioselective Hydroalkynylation of Unactivated 1,1‐Disubstituted Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zi‐Xuan Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 China
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5
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Rozsar D, Formica M, Yamazaki K, Hamlin TA, Dixon DJ. Bifunctional Iminophosphorane-Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides. J Am Chem Soc 2022; 144:1006-1015. [PMID: 34990142 PMCID: PMC8793149 DOI: 10.1021/jacs.1c11898] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
The
first metal-free catalytic intermolecular enantioselective
Michael addition to unactivated α,β-unsaturated amides
is described. Consistently high enantiomeric excesses and yields were
obtained over a wide range of alkyl thiol pronucleophiles and electrophiles
under mild reaction conditions, enabled by a novel squaramide-based
bifunctional iminophosphorane catalyst. Low catalyst loadings (2.0
mol %) were achieved on a decagram scale, demonstrating the scalability
of the reaction. Computational analysis revealed the origin of the
high enantiofacial selectivity via analysis of relevant transition
structures and provided substantial support for specific noncovalent
activation of the carbonyl group of the α,β-unsaturated
amide by the catalyst.
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Affiliation(s)
- Daniel Rozsar
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
| | - Michele Formica
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom.,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
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6
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Yao EZ, Chai GL, Zhang P, Zhu B, Chang J. Chiral dihydroxytetraphenylene-catalyzed enantioselective conjugate addition of boronic acids to β-enaminones. Org Chem Front 2022. [DOI: 10.1039/d1qo01845k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An efficient (S)-2,15-Cl2-DHTP-catalyzed enantioselective conjugate addition of organic boronic acids to β-enaminones has been developed.
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Affiliation(s)
- En-Ze Yao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guo-Li Chai
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Ping Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bo Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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7
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Mallik S, Bhajammanavar V, Baidya M. Regioselective Nitrosocarbonyl Aldol Reaction of Deconjugated Butyrolactams: Synthesis of γ‐Heterosubstituted α,β‐Unsaturated γ‐Lactams. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sumitava Mallik
- Department of Chemistry Indian Institute of Technology Madras Chennai 6000036 Tamil Nadu India
| | - Vinod Bhajammanavar
- Department of Chemistry Indian Institute of Technology Madras Chennai 6000036 Tamil Nadu India
| | - Mahiuddin Baidya
- Department of Chemistry Indian Institute of Technology Madras Chennai 6000036 Tamil Nadu India
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8
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Obe FO, Davis RA, Spurlock J, Grunloh Barnes MM, Lindvall T, Wendorf MS, Delach C, Ferrence GM, Standard JM, Hitchcock SR. Asymmetric conjugate addition reactions with chiral oxadiazinones: Unusual conformational properties of the oxadiazinones. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Glogowski MP, Matthews JM, Lawhorn BG, Minbiole KPC. Diastereoselective Copper-Mediated Conjugate Addition of Functionalized Magnesiates for the Preparation of Bisaryl Nrf2 Activators. J Org Chem 2021; 86:3120-3137. [PMID: 33555189 DOI: 10.1021/acs.joc.0c02639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A two-step metal-halogen exchange and diastereoselective copper-mediated Michael addition onto a complex α,β-unsaturated system has been developed and applied toward the synthesis of bisaryl Nrf2 activators. Optimization of metal-halogen exchange using (n-Bu)3MgLi allowed for the preparation of custom aryl-functionalized magnesiate reagents at noncryogenic temperatures. Following transmetalation, these reagents were used in highly diastereoselective Michael addition reactions.
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Affiliation(s)
- Michal P Glogowski
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Jay M Matthews
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Brian G Lawhorn
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Kevin P C Minbiole
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085, United States
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10
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Curran SP, Fallon BJ, Connon SJ. C
2
‐Symmetric Cinchona Alkaloid Derivatives: Versatile Catalysts for the Enantioselective C−C Bond Forming Conjugate Addition of Nucleophiles to Simple α,β‐Unsaturated Acyl Pyrazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202004505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Simon P. Curran
- School of Chemistry Trinity Biomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street 2 Dublin Ireland
| | - Brendan J. Fallon
- School of Chemistry Trinity Biomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street 2 Dublin Ireland
| | - Stephen J. Connon
- School of Chemistry Trinity Biomedical Sciences Institute Trinity College Dublin 152-160 Pearse Street 2 Dublin Ireland
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11
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Takemura H, Goto S, Hosoya T, Yoshida S. 2-Azidoacrylamides as compact platforms for efficient modular synthesis. Chem Commun (Camb) 2020; 56:15541-15544. [PMID: 33241832 DOI: 10.1039/d0cc07212e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Efficient methods to assemble modules with compact platform molecules by triazole formations and Michael reactions are disclosed. The good electrophilicity of 2-triazolylacrylamides realized Michael additions using various nucleophiles. An iterative synthesis of a tetrakis(triazole) was accomplished by orthogonal triazole formations and Michael reactions.
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Affiliation(s)
- Hinano Takemura
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
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12
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Pereira VLP, P. Meirelis F, Vieira BGN. Divergent and Diastereoselective Synthesis of α-Monosubstituted and trans-α,β-Disubstituted γ-Lactams from (S)-N,N-Dibenzyl-α-amino Aldehydes via Henry and Michael Reactions. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
γ-Monosubstituted and trans-α,β-disubstituted γ-lactams were diastereoselectively synthesized from common intermediates (S)-N,N-dibenzylated aldehydes derived from natural l-(α)-amino acids, employing a divergent approach. The key features of the routes include diastereoselective Henry and Michael reactions that produced chiral γ-nitroester derivatives, which were subsequently submitted to a tandem reduction-lactamization sequence providing the title compounds. The versatility of routes can allow the preparation of several other mono-, di-, or tri-substituted γ-lactams.
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Affiliation(s)
- Vera L. P. Pereira
- Instituto de Pesquisas de Produtos Naturais, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro
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13
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Li YB, Tian H, Yin L. Copper(I)-Catalyzed Asymmetric 1,4-Conjugate Hydrophosphination of α,β-Unsaturated Amides. J Am Chem Soc 2020; 142:20098-20106. [DOI: 10.1021/jacs.0c09654] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yan-Bo Li
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Hu Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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14
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Yoshimura F, Itoh R, Torizuka M, Mori G, Tanino K. Chemical Synthesis of Brasilicardins. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Ryusei Itoh
- Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Makoto Torizuka
- Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Genki Mori
- Department of Chemistry, Faculty of Science, Hokkaido University
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University
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15
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Lee H, Cho S, Lee Y, Jung B. Stereoselective Formal Hydroamidation of Si-Substituted Arylacetylenes with DIBAL-H and Isocyanates: Synthesis of ( E)- and ( Z)-α-Silyl-α,β-unsaturated Amides. J Org Chem 2020; 85:12024-12035. [PMID: 32909750 DOI: 10.1021/acs.joc.0c01903] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient and stereoselective method for the synthesis of (E)- and (Z)-α-silyl-α,β-unsaturated amides and its synthetic applications are presented herein. The solvent-controlled hydroaluminations of Si-substituted alkynes with DIBAL-H generate diastereomerically enriched alkenylaluminum reagents that are directly reacted with isocyanates at ambient temperature to afford α-silyl-α,β-unsaturated amides in high yields with retained stereoselectivity. In particular, this process enables the synthesis of a broad range of (E)-α-silyl-α,β-unsaturated amides, which are the less studied isomers. The synthetic utility of this method is highlighted by its short reaction time, ease of purification, easily accessible substrates and reagents, gram-scale synthesis, and the further transformations of C-Si bonds into C-H, C-X, and C-C bonds.
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Affiliation(s)
- Hanseul Lee
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Soohong Cho
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Yunmi Lee
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Byunghyuck Jung
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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16
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Link A, Zhou Y, Buchwald SL. CuH-Catalyzed Asymmetric Reductive Amidation of α,β-Unsaturated Carboxylic Acids. Org Lett 2020; 22:5666-5670. [PMID: 32628019 DOI: 10.1021/acs.orglett.0c02064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The direct enantioselective copper hydride (CuH)-catalyzed synthesis of β-chiral amides from α,β-unsaturated carboxylic acids and secondary amines under mild reaction conditions is reported. The method utilizes readily accessible carboxylic acids and tolerates a variety of functional groups in the β-position including several heteroarenes. A subsequent iridium-catalyzed reduction to γ-chiral amines can be performed in the same flask without purification of the intermediate amides.
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Affiliation(s)
- Achim Link
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yujing Zhou
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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17
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Domingo LR, Seif A, Mazarei E, Zahedi E, Ahmadi TS. A molecular electron density theory (MEDT) study of the role of halogens (X 2 = F 2, Cl 2, Br 2 and I 2) on the aza-Michael-addition reactions. NEW J CHEM 2020. [DOI: 10.1039/d0nj04203j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The energy profile for gas phase F2-catalyzed nucleophilic attack of PYR R1 on the β-conjugated carbon of MA R2 marked.
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Affiliation(s)
- Luis R. Domingo
- Department of Organic Chemistry
- University of Valencia
- 46100 Burjassot
- Spain
| | - Ahmad Seif
- Department of Organic Chemistry
- University of Valencia
- 46100 Burjassot
- Spain
- Department of Chemistry
| | - Elham Mazarei
- Department of Organic Chemistry
- University of Valencia
- 46100 Burjassot
- Spain
| | - Ehasn Zahedi
- Department of Chemistry
- Shahrood Branch
- Islamic Azad University
- Shahrood
- Iran
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18
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Jang WJ, Song SB, Lee S, Yoo SY, Chung YK, Huh J, Yun J. LiOtBu-promoted stereoselective deconjugation of α,β-unsaturated diesters probed using density functional theory. Org Chem Front 2020. [DOI: 10.1039/d0qo01091j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report the isomerisation of α,β-unsaturated diesters to thermodynamically less favourable β,γ-unsaturated carbonyl compounds in the absence of strongly basic anhydrous or photochemical conditions.
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Affiliation(s)
- Won Jun Jang
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seon Bin Song
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Soyeon Lee
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seok Yeol Yoo
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - You Kyoung Chung
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Joonsuk Huh
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
- School of Advanced Institute of Nanotechnology
| | - Jaesook Yun
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
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19
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Wright TB, Turnbull BWH, Evans PA. Enantioselective Rhodium‐Catalyzed Allylic Alkylation of β,γ‐Unsaturated α‐Amino Nitriles: Synthetic Homoenolate Equivalents. Angew Chem Int Ed Engl 2019; 58:9886-9890. [DOI: 10.1002/anie.201900442] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/10/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Timothy B. Wright
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
| | - Ben W. H. Turnbull
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
| | - P. Andrew Evans
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
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20
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Wright TB, Turnbull BWH, Evans PA. Enantioselective Rhodium‐Catalyzed Allylic Alkylation of β,γ‐Unsaturated α‐Amino Nitriles: Synthetic Homoenolate Equivalents. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Timothy B. Wright
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
| | - Ben W. H. Turnbull
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
| | - P. Andrew Evans
- Department of ChemistryQueen's University 90 Bader Lane Kingston ON K7L 3N6 Canada
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21
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Hamlin TA, Fernández I, Bickelhaupt FM. How Dihalogens Catalyze Michael Addition Reactions. Angew Chem Int Ed Engl 2019; 58:8922-8926. [PMID: 31033118 PMCID: PMC6617756 DOI: 10.1002/anie.201903196] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/04/2019] [Indexed: 11/12/2022]
Abstract
We have quantum chemically analyzed the catalytic effect of dihalogen molecules (X2 =F2 , Cl2 , Br2 , and I2 ) on the aza-Michael addition of pyrrolidine and methyl acrylate using relativistic density functional theory and coupled-cluster theory. Our state-of-the-art computations reveal that activation barriers systematically decrease as one goes to heavier dihalogens, from 9.4 kcal mol-1 for F2 to 5.7 kcal mol-1 for I2 . Activation strain and bonding analyses identify an unexpected physical factor that controls the computed reactivity trends, namely, Pauli repulsion between the nucleophile and Michael acceptor. Thus, dihalogens do not accelerate Michael additions by the commonly accepted mechanism of an enhanced donor-acceptor [HOMO(nucleophile)-LUMO(Michael acceptor)] interaction, but instead through a diminished Pauli repulsion between the lone-pair of the nucleophile and the Michael acceptor's π-electron system.
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Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de Ciencias QuímicaUniversidad Complutense de Madrid28040MadridSpain
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute for Molecules and Materials (IMM)Radboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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22
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Hamlin TA, Fernández I, Bickelhaupt FM. Wie Dihalogene Michael‐Additionsreaktionen katalysieren. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam Niederlande
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de Ciencias QuímicaUniversidad Complutense de Madrid 28040 Madrid Spanien
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam Niederlande
- Institute for Molecules and Materials (IMM)Radboud University Heyendaalseweg 135 6525 AJ Nijmegen Niederlande
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23
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Mravec B, Plevová K, Šebesta R. Copper-catalyzed conjugate addition of in situ formed alkyl boranes to α,β-unsaturated ketones. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2309-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Zhou P, Liu X, Wu W, Xu C, Feng X. Catalytic Asymmetric Construction of β-Azido Amides and Esters via Haloazidation. Org Lett 2019; 21:1170-1175. [PMID: 30693781 DOI: 10.1021/acs.orglett.9b00110] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A catalytic regio- and enantioselective haloazidation reaction with a chiral iron(II) complex catalyst under mild reaction conditions was reported. By this approach, the stereoselective α-halo-β-azido difunctionalization of both α,β-unsaturated amides and α,β-unsaturated esters was achieved. This method enabled the construction of a broad spectrum of valuable functionalized amides and esters, including enantiomerically enriched β-azido amides, aziridine amides, α-amino amide derivatives, β-triazole amides, functionalized peptide derivatives, and α-halo-β-azido-substituted esters.
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Affiliation(s)
- Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Wangbin Wu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Chaoran Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
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25
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Yoshimura F, Itoh R, Torizuka M, Mori G, Tanino K. Asymmetric Total Synthesis of Brasilicardins. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fumihiko Yoshimura
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
- Present address: School of Pharmaceutical Sciences University of Shizuoka 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Ryusei Itoh
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo 060-0810 Japan
| | - Makoto Torizuka
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo 060-0810 Japan
| | - Genki Mori
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Keiji Tanino
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
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26
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Yoshimura F, Itoh R, Torizuka M, Mori G, Tanino K. Asymmetric Total Synthesis of Brasilicardins. Angew Chem Int Ed Engl 2018; 57:17161-17167. [DOI: 10.1002/anie.201811403] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Fumihiko Yoshimura
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
- Present address: School of Pharmaceutical Sciences University of Shizuoka 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - Ryusei Itoh
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo 060-0810 Japan
| | - Makoto Torizuka
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo 060-0810 Japan
| | - Genki Mori
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Keiji Tanino
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
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27
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Kim E, Park S, Chang S. Silylative Reductive Amination of α,β-Unsaturated Aldehydes: A Convenient Synthetic Route to β-Silylated Secondary Amines. Chemistry 2018; 24:5765-5769. [DOI: 10.1002/chem.201800958] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Eunae Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
- Korea Research Institute of Chemical Technology (KRICT); Daejeon 34114 Republic of Korea
| | - Sehoon Park
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 Republic of Korea
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28
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Ling Z, Xie F, Gridnev ID, Zhang W. DFT Study of the Strong Solvent Effects in the Cu-Catalyzed Asymmetric Conjugate Addition Reaction. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zheng Ling
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Fang Xie
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Ilya D. Gridnev
- Department of Chemistry; Graduate School of Science, Tohoku University; Sendai 9808578 Japan
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
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29
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Kalshetti MG, Argade NP. Total Synthesis of (±)/(+)-Subincanadine E and Determination of Absolute Configuration. J Org Chem 2017; 82:11126-11133. [DOI: 10.1021/acs.joc.7b02122] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Narshinha P. Argade
- Division of Organic Chemistry, National Chemical Laboratory (CSIR), Pune 411 008, India
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30
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Rodríguez-Fernández M, Yan X, Collados JF, White PB, Harutyunyan SR. Lewis Acid Enabled Copper-Catalyzed Asymmetric Synthesis of Chiral β-Substituted Amides. J Am Chem Soc 2017; 139:14224-14231. [PMID: 28960071 PMCID: PMC5639465 DOI: 10.1021/jacs.7b07344] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Here we report that readily available
silyl- and boron-based Lewis
acids in combination with chiral copper catalysts are able to overcome
the reactivity issues of unactivated enamides, known as the least
reactive carboxylic acid derivatives, toward alkylation with organomagnesium
reagents. Allowing unequaled chemo-reactivity and stereocontrol in
catalytic asymmetric conjugate addition to enamides, the method is
distinguished by its unprecedented reaction scope, allowing even the
most challenging and synthetically important methylations to be accomplished
with good yields and excellent enantioselectivities. This catalytic
protocol tolerates a broad temperature range (−78 °C to
ambient) and scale up (10 g), while the chiral catalyst can be reused
without affecting overall efficiency. Mechanistic studies revealed
the fate of the Lewis acid in each elementary step of the copper-catalyzed
conjugate addition of Grignard reagents to enamides, allowing us to
identify the most likely catalytic cycle of the reaction.
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Affiliation(s)
- Mamen Rodríguez-Fernández
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Xingchen Yan
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Juan F Collados
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Paul B White
- Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
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31
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Affiliation(s)
- Marino Petrini
- School of Science and Technology, Chemistry Division Università di Camerino Via S. Agostino, 1. 62032 Camerino Italy
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32
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Clean and selective catalytic C-H alkylation of alkenes with environmental friendly alcohols. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.molcata.2016.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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33
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Gao M, Willis MC. Enantioselective Three-Component Assembly of β'-Aryl Enones Using a Rhodium-Catalyzed Alkyne Hydroacylation/Aryl Boronic Acid Conjugate Addition Sequence. Org Lett 2017; 19:2734-2737. [PMID: 28485946 DOI: 10.1021/acs.orglett.7b01087] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Rhodium-catalyzed alkyne hydroacylation using alkyl β-S-aldehydes, enantioselective rhodium-catalyzed aryl boronic acid conjugate addition, and sulfide elimination are combined in sequence to provide β'-aryl enones. The reaction sequence is efficient and delivers highly functionalized products with excellent levels of enantiocontrol. Good variation of the three reaction components is demonstrated. The sequence corresponds to the formal regio- and enantioselective monoconjugate addition of aryl boronic acids to dienones.
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Affiliation(s)
- Ming Gao
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Michael C Willis
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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34
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Compain G, Sikk L, Massi L, Gal JF, Duñach E. Bond Strength and Reactivity Scales for Lewis Superacid Adducts: A Comparative Study with In(OTf)3and Al(OTf)3. Chemphyschem 2017; 18:683-691. [DOI: 10.1002/cphc.201601389] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Guillaume Compain
- Institut de Chimie de Nice, UMR 7272; Université Côte D'Azur, CNRS; 06108 Nice France
| | - Lauri Sikk
- Institut de Chimie de Nice, UMR 7272; Université Côte D'Azur, CNRS; 06108 Nice France
| | - Lionel Massi
- Institut de Chimie de Nice, UMR 7272; Université Côte D'Azur, CNRS; 06108 Nice France
| | - Jean-François Gal
- Institut de Chimie de Nice, UMR 7272; Université Côte D'Azur, CNRS; 06108 Nice France
| | - Elisabet Duñach
- Institut de Chimie de Nice, UMR 7272; Université Côte D'Azur, CNRS; 06108 Nice France
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35
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Ohmatsu K, Furukawa Y, Kiyokawa M, Ooi T. Diastereo- and enantioselective phase-transfer alkylation of 3-substituted oxindoles with racemic secondary alkyl halides. Chem Commun (Camb) 2017; 53:13113-13116. [DOI: 10.1039/c7cc07122a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A catalytic asymmetric alkylation of fully substituted enolates with racemic, non-activated secondary alkyl halides is described.
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Affiliation(s)
- Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Yukino Furukawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Mari Kiyokawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8601
- Japan
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36
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Wu Z, Laffoon JD, Nguyen TT, McAlpin JD, Hull KL. Rhodium‐Catalyzed Asymmetric Synthesis of β‐Branched Amides. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Zhao Wu
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Joshua D. Laffoon
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Trang T. Nguyen
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Jacob D. McAlpin
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Kami L. Hull
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
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37
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Wu Z, Laffoon JD, Nguyen TT, McAlpin JD, Hull KL. Rhodium‐Catalyzed Asymmetric Synthesis of β‐Branched Amides. Angew Chem Int Ed Engl 2016; 56:1371-1375. [DOI: 10.1002/anie.201610500] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Zhao Wu
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Joshua D. Laffoon
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Trang T. Nguyen
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Jacob D. McAlpin
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
| | - Kami L. Hull
- Department of Chemistry University of Illinois, Urbana-Champaign 600 S. Mathews Urbana IL 61821 USA
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38
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Yamanaka M, Sakata K, Yoshioka K, Uraguchi D, Ooi T. Origin of High Regio-, Diastereo-, and Enantioselectivities in 1,6-Addition of Azlactones to Dienyl N-Acylpyrroles: A Computational Study. J Org Chem 2016; 82:541-548. [DOI: 10.1021/acs.joc.6b02572] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Masahiro Yamanaka
- Department
of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ken Sakata
- Faculty
of Pharmaceutical Sciences, Hoshi University, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Ken Yoshioka
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Applied
Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8602, Japan
| | - Daisuke Uraguchi
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Applied
Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8602, Japan
| | - Takashi Ooi
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Applied
Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8602, Japan
- CREST,
Japan Science and Technology Agency (JST), Nagoya University, Nagoya 464-8602, Japan
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39
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Chenniappan VK, Rahaim RJ. Titanium-Promoted Cross-Coupling for the Selective Synthesis of Polysubstituted, Conjugated Amides. Org Lett 2016; 18:5090-5093. [PMID: 27678270 DOI: 10.1021/acs.orglett.6b02537] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
α,β-Unsaturated amides are important building blocks and are key structural elements in a number of biologically active natural products. Despite their importance and prevalence, few methods exist to prepare conjugated amides directly and modularly. To address this gap, a titanium-promoted coupling of alkynes and isocyanates has been developed. The method is highly stereoselective, producing only the E isomer with good chemoselectivity and regioselectivity (>95/5), for unsymmetrical internal alkynes that contain a steric bias. The reactive titanacyclopentene intermediate formed from the coupling of the alkyne and isocyanate was additionally reacted with various electrophiles to access tetrasubstituted enamides.
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Affiliation(s)
- Vinoth Kumar Chenniappan
- Department of Chemistry, Oklahoma State University , 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
| | - Ronald J Rahaim
- Department of Chemistry, Oklahoma State University , 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
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40
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Poater A, Vummaleti SVC, Polo A, Cavallo L. Mechanistic Insights of a Selective C-H Alkylation of Alkenes by a Ru-based Catalyst and Alcohols. ChemistrySelect 2016. [DOI: 10.1002/slct.201600860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química; Universitat de Girona, Campus Montilivi; 17003 Girona, Catalonia Spain
| | - Sai Vikrama Chaitanya Vummaleti
- KAUST Catalysis Center, Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Alfonso Polo
- Institut de Química Computacional i Catàlisi and Departament de Química; Universitat de Girona, Campus Montilivi; 17003 Girona, Catalonia Spain
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
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41
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Kumagai N, Shibasaki M. Nucleophilic and Electrophilic Activation of Non‐Heteroaromatic Amides in Atom‐Economical Asymmetric Catalysis. Chemistry 2016; 22:15192-15200. [DOI: 10.1002/chem.201602484] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Naoya Kumagai
- Institute of Microbial Chemistry (Bikaken), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (Bikaken), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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42
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Iriarte I, Vera S, Badiola E, Mielgo A, Oiarbide M, García JM, Odriozola JM, Palomo C. Asymmetric Assembly of All-Carbon Tertiary/Quaternary Nonadjacent Stereocenters through Organocatalytic Conjugate Addition of α-Cyanoacetates to a Methacrylate Equivalent. Chemistry 2016; 22:13690-6. [DOI: 10.1002/chem.201603082] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Igor Iriarte
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Eider Badiola
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Jesús M. García
- Departamento de Química Aplicada; Universidad Pública de Navarra; 31006 Pamplona Spain
| | - José M. Odriozola
- Departamento de Química Aplicada; Universidad Pública de Navarra; 31006 Pamplona Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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43
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Efficient nickel-catalyzed hydrocyanation of alkenes using acetone cyanohydrin as a safer cyano source. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Mielgo A, Palomo C. 1H-Imidazol-4(5H)-ones and thiazol-4(5H)-ones as emerging pronucleophiles in asymmetric catalysis. Beilstein J Org Chem 2016; 12:918-36. [PMID: 27340482 PMCID: PMC4902076 DOI: 10.3762/bjoc.12.90] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/05/2016] [Indexed: 11/23/2022] Open
Abstract
Asymmetric catalysis represents a very powerful tool for the synthesis of enantiopure compounds. In this context the main focus has been directed not only to the search for new efficient chiral catalysts, but also to the development of efficient pronucleophiles. This review highlights the utility and first examples of 1H-imidazol-4(5H)-ones and thiazol-4(5H)-ones as pronucleophiles in catalytic asymmetric reactions.
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Affiliation(s)
- Antonia Mielgo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain
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45
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Zhang M, Kumagai N, Shibasaki M. Electrophilic Activation of α,β‐Unsaturated Amides: Catalytic Asymmetric Vinylogous Conjugate Addition of Unsaturated γ‐Butyrolactones. Chemistry 2016; 22:5525-9. [DOI: 10.1002/chem.201600740] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Ming Zhang
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan), Fax: (+81) 3-3441-7589
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan), Fax: (+81) 3-3441-7589
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan), Fax: (+81) 3-3441-7589
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Zhang ZP, Dong N, Li X, Cheng JP. Highly enantioselective Michael addition reactions of 2-substituted benzofuran-3(2H)-ones to nitroolefins. Org Biomol Chem 2015; 13:9943-7. [PMID: 26349788 DOI: 10.1039/c5ob01691f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective Michael addition reaction of 2-substituted benzofuran-3(2H)-ones to nitroolefins was promoted by a bifunctional squaramide catalyst. As a result, a number of chiral 2,2'-substituted benzofuran-3-one derivatives, bearing adjacent quaternary-tertiary stereocenters, were efficiently synthesized with excellent enantioselectivities.
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Affiliation(s)
- Zhi-Pei Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China.
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