1
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Zhen G, Zeng G, Jiang K, Wang F, Cao X, Yin B. Visible-Light-Induced Diradical-Mediated ipso-Cyclization towards Double Dearomative [2+2]-Cycloaddition or Smiles-Type Rearrangement. Chemistry 2023; 29:e202203217. [PMID: 36460618 DOI: 10.1002/chem.202203217] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/05/2022]
Abstract
When mono-radical ipso-cyclization of aryl sulfonamides tend to undergo Smiles-type rearrangement through aromatization-driven C-S bond cleavage, diradical-mediated cyclization must perform in a distinct reaction pathway. It is interesting meanwhile challenging to tune the rate of C-S bond cleavage to achieve a chemically divergent reaction of (hetero) aryl sulfonamides in a visible-light induced energy transfer (EnT) reaction pathway involving diradical species. Herein a chemically divergent reaction based on the designed indole-tethered (hetero)arylsulfonamides is reported which involves a diradical-mediated ipso-cyclization and a controllable cleavage of an inherent C-S bond. The combined experimental and computational results have revealed that the cleavage of the C-S bond in these substrates can be controlled by tuning the heteroaryl moieties: a) If the (hetero)aryl is thienyl, furyl, phenanthryl, etc., the radical coupling of double dearomative diradicals (DDDR) precedes over C-S bond cleavage to afford cyclobutene fused indolines by double dearomative [2+2]-cycloaddition; b) if the (hetero)aryl is phenyl, naphthyl, pyridyl, indolyl etc., the cleavage of C-S bond in DDDR is favored over radical coupling to afford biaryl products.
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Affiliation(s)
- Guangjin Zhen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Guohui Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Kai Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Furong Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Xiaohui Cao
- School of Pharmacy, Guangdong Pharmaceutical University, Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Biaolin Yin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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2
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Kennington SCD, Teloxa SF, Mellado-Hidalgo M, Galeote O, Puddu S, Bellido M, Romea P, Urpí F, Aullón G, Font-Bardia M. Direct and Enantioselective Aldol Reactions Catalyzed by Chiral Nickel(II) Complexes. Angew Chem Int Ed Engl 2021; 60:15307-15312. [PMID: 33872449 PMCID: PMC8362213 DOI: 10.1002/anie.202104352] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/12/2021] [Indexed: 01/07/2023]
Abstract
A direct and asymmetric aldol reaction of N‐acyl thiazinanethiones with aromatic aldehydes catalyzed by chiral nickel(II) complexes is reported. The reaction gives the corresponding O‐TIPS‐protected anti‐aldol adducts in high yields and with remarkable stereocontrol and atom economy. Furthermore, the straightforward removal of the achiral scaffold provides enantiomerically pure intermediates of synthetic interest, which involve precursors for anti‐α‐amino‐β‐hydroxy and α,β‐dihydroxy carboxylic derivatives. Theoretical calculations explain the observed high stereocontrol.
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Affiliation(s)
- Stuart C D Kennington
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Saul F Teloxa
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Miguel Mellado-Hidalgo
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Oriol Galeote
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Sabrina Puddu
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Marina Bellido
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Pedro Romea
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Fèlix Urpí
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Gabriel Aullón
- Department of Inorganic and Organic Chemistry, Section of Inorganic Chemistry, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Mercè Font-Bardia
- X-ray Diffraction Unity, CCiTUB, Universitat de Barcelona, Carrer Solé i Sabarís 1-3, 08028, Barcelona, Spain
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3
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Kennington SCD, Teloxa SF, Mellado‐Hidalgo M, Galeote O, Puddu S, Bellido M, Romea P, Urpí F, Aullón G, Font‐Bardia M. Direct and Enantioselective Aldol Reactions Catalyzed by Chiral Nickel(II) Complexes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104352] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stuart C. D. Kennington
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Saul F. Teloxa
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Miguel Mellado‐Hidalgo
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Oriol Galeote
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Sabrina Puddu
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Marina Bellido
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Pedro Romea
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Fèlix Urpí
- Department of Inorganic and Organic Chemistry Section of Organic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Gabriel Aullón
- Department of Inorganic and Organic Chemistry Section of Inorganic Chemistry Universitat de Barcelona Carrer Martí i Franqués 1–11 08028 Barcelona Spain
| | - Mercè Font‐Bardia
- X-ray Diffraction Unity CCiTUB Universitat de Barcelona Carrer Solé i Sabarís 1–3 08028 Barcelona Spain
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4
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Meninno S, Franco F, Benaglia M, Lattanzi A. Pyrazoleamides in Catalytic Asymmetric Reactions: Recent Advances. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Francesca Franco
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
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5
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Nakanishi T, Kikuchi J, Kaga A, Chiba S, Terada M. One‐Pot Synthesis of Enantioenriched β‐Amino Secondary Amides via an Enantioselective [4+2] Cycloaddition Reaction of Vinyl Azides with
N
‐Acyl Imines Catalyzed by a Chiral Brønsted Acid. Chemistry 2020; 26:8230-8234. [DOI: 10.1002/chem.202002049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Taishi Nakanishi
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Jun Kikuchi
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Atsushi Kaga
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Masahiro Terada
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
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6
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Romo JM, Romea P, Urpí F. Direct anti
Glycolate Aldol Reaction of Protected Chiral N
-Hydroxyacetyl Thiazolidinethiones with Acetals Catalyzed by a Nickel(II) Complex. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Juan Manuel Romo
- Department of Inorganic and Organic Chemistry; Section of Organic Chemistry, and Institute of Biomedicine (IBUB); University of Barcelona; Carrer Martí I Franqués 1-11 08028 Barcelona Catalonia Spain
| | - Pedro Romea
- Department of Inorganic and Organic Chemistry; Section of Organic Chemistry, and Institute of Biomedicine (IBUB); University of Barcelona; Carrer Martí I Franqués 1-11 08028 Barcelona Catalonia Spain
| | - Fèlix Urpí
- Department of Inorganic and Organic Chemistry; Section of Organic Chemistry, and Institute of Biomedicine (IBUB); University of Barcelona; Carrer Martí I Franqués 1-11 08028 Barcelona Catalonia Spain
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7
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Méndez‐Sánchez D, Mourelle‐Insua Á, Gotor‐Fernández V, Lavandera I. Synthesis of α‐Alkyl‐β‐Hydroxy Amides through Biocatalytic Dynamic Kinetic Resolution Employing Alcohol Dehydrogenases. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900317] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Daniel Méndez‐Sánchez
- Department of Organic and Inorganic ChemistryUniversity of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
- Current address: Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - Ángela Mourelle‐Insua
- Department of Organic and Inorganic ChemistryUniversity of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Vicente Gotor‐Fernández
- Department of Organic and Inorganic ChemistryUniversity of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Iván Lavandera
- Department of Organic and Inorganic ChemistryUniversity of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
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8
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Pluta R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α‐Alkoxyamides to α‐Fluorinated Ketones. Angew Chem Int Ed Engl 2019; 58:2459-2463. [PMID: 30652398 DOI: 10.1002/anie.201814607] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Roman Pluta
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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9
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Pluta R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α‐Alkoxyamides to α‐Fluorinated Ketones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814607] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Roman Pluta
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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10
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Amatov T, Jangra H, Pohl R, Cisařová I, Zipse H, Jahn U. Unique Stereoselective Homolytic C-O Bond Activation in Diketopiperazine-Derived Alkoxyamines by Adjacent Amide Pyramidalization. Chemistry 2018; 24:15336-15345. [PMID: 30092124 DOI: 10.1002/chem.201803284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/02/2018] [Indexed: 12/12/2022]
Abstract
Simple monocyclic diketopiperazine (DKP)-derived alkoxyamines exhibit unprecedented activation of a remote C-O bond for homolysis by amide distortion. The combination of strain-release-driven amide planarization and the persistent radical effect (PRE) enables a unique, irreversible, and quantitative trans→cis isomerization under much milder conditions than typically observed for such homolysis-limited reactions. This isomerization is shown to be general and independent of the steric and electronic nature of both the amino acid side chains and the substituents at the DKP nitrogen atoms. Homolysis rate constants are determined, and they significantly differ for both the labile trans diastereomers and the stable cis diastereomers. To reveal the factors influencing this unusual process, structural features of the kinetic trans diastereomers and thermodynamic cis diastereomers are investigated in the solid state and in solution. X-ray crystallographic analysis and computational studies indicate substantial distortion of the amide bond from planarity in the trans-alkoxyamines, and this is believed to be the cause for the facile and quantitative isomerization. Thus, these amino-acid-derived alkoxyamines are the first examples that exhibit a large thermodynamic preference for one diastereomer over the other upon thermal homolysis, and this allows controlled switching of configurations and configurational cycling.
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Affiliation(s)
- Tynchtyk Amatov
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic.,Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Harish Jangra
- Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic
| | - Ivana Cisařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843, Prague, Czech Republic
| | - Hendrik Zipse
- Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic
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11
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Noda H, Kumagai N, Shibasaki M. Catalytic Asymmetric Synthesis of α‐Trifluoromethylated Carbinols: A Case Study of Tertiary Propargylic Alcohols. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800013] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
| | - 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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12
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Brewitz L, Noda H, Kumagai N, Shibasaki M. Structural and Computational Investigation of Intramolecular N···H Interactions in α‐ and β‐Fluorinated 7‐Azaindoline Amides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Lennart Brewitz
- Institute of Microbial Chemistry (BIKAKEN) Tokyo Kamiosaki 3‐14‐23 141‐0021 Shinagawa‐ku, Tokyo Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN) Tokyo Kamiosaki 3‐14‐23 141‐0021 Shinagawa‐ku, Tokyo Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) Tokyo Kamiosaki 3‐14‐23 141‐0021 Shinagawa‐ku, Tokyo Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) Tokyo Kamiosaki 3‐14‐23 141‐0021 Shinagawa‐ku, Tokyo Japan
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13
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Zhang M, Kumagai N, Shibasaki M. α,β‐Unsaturated Amides as Dipolarophiles: Catalytic Asymmetric
exo
‐Selective 1,3‐Dipolar Cycloaddition with Nitrones. Chemistry 2017; 23:12450-12455. [DOI: 10.1002/chem.201702330] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Ming Zhang
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - 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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14
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Saito A, Kumagai N, Shibasaki M. Cu/Pd Synergistic Dual Catalysis: Asymmetric α‐Allylation of an α‐CF
3
Amide. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702113] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Akira Saito
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - 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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15
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Saito A, Kumagai N, Shibasaki M. Cu/Pd Synergistic Dual Catalysis: Asymmetric α‐Allylation of an α‐CF
3
Amide. Angew Chem Int Ed Engl 2017; 56:5551-5555. [DOI: 10.1002/anie.201702113] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/24/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Akira Saito
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - 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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16
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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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17
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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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18
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Sun Z, Weidner K, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction of α-N3Amide. Chemistry 2015; 21:17574-7. [DOI: 10.1002/chem.201503921] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Indexed: 11/06/2022]
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19
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Weidner K, Sun Z, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of an α-Azido Amide. Angew Chem Int Ed Engl 2015; 54:6236-40. [DOI: 10.1002/anie.201501607] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/12/2022]
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20
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Weidner K, Sun Z, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of an α-Azido Amide. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501607] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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