1
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Mei P, Ma Z, Chen Y, Wu Y, Hao W, Fan QH, Zhang WX. Chiral bisphosphine Ph-BPE ligand: a rising star in asymmetric synthesis. Chem Soc Rev 2024; 53:6735-6778. [PMID: 38826108 DOI: 10.1039/d3cs00028a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Chiral 1,2-bis(2,5-diphenylphospholano)ethane (Ph-BPE) is a class of optimal organic bisphosphine ligands with C2-symmetry. Ph-BPE with its excellent catalytic performance in asymmetric synthesis has attracted much attention of chemists with increasing popularity and is growing into one of the most commonly used organophosphorus ligands, especially in asymmetric catalysis. Over two hundred examples have been reported since 2012. This review presents how Ph-BPE is utilized in asymmetric synthesis and how powerful it is as a chiral ligand or even a catalyst in a wide range of reactions including applications in the total synthesis of bioactive molecules.
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Affiliation(s)
- Peifeng Mei
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Zibin Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Yu Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Yue Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Wei Hao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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2
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Yuan T, Radefeld K, Shan C, Wegner C, Nichols E, Ye X, Tang Q, Wojtas L, Shi X. Asymmetric Hydrative Aldol Reaction (HAR) via Vinyl-Gold Promoted Intermolecular Ynamide Addition to Aldehydes. Angew Chem Int Ed Engl 2023; 62:e202305810. [PMID: 37276357 PMCID: PMC10527335 DOI: 10.1002/anie.202305810] [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: 04/25/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/07/2023]
Abstract
Herein, we reported an intermolecular asymmetric hydrative aldol reaction through vinyl-gold intermediate under ambient conditions. This tandem alkyne hydration and sequential nucleophilic addition afforded a "base-free" approach to β-hydroxy amides with high efficiency (up to 95 % yields, >50 examples). Vinyl gold intermediate was applied as reactive nucleophile and Fe(acac)3 was used as the critical co-catalyst to prevent undesired protodeauration, allowing this transformation to proceed under mild conditions with good functional group tolerance and excellent stereoselectivity (>20 : 1 d.r. and up to 99 % ee).
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Affiliation(s)
- Teng Yuan
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Kelton Radefeld
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Chuan Shan
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Carter Wegner
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Erin Nichols
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Qi Tang
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
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3
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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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4
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Ma B, Sun R, Yang J. Cobalt-catalyzed direct α-hydroxymethylation of amides with methanol as a C1 source. Chem Commun (Camb) 2022; 58:1382-1385. [PMID: 34989725 DOI: 10.1039/d1cc06501g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we report a cobalt-catalyzed α-hydroxymethylation of amides with methanol under mild conditions. Using CoCl2·6H2O as an inexpensive and efficient catalyst, some important bioactive β-hydroxyamides were obtained in moderate to excellent yields. The developed method features a wide substrate scope and good functional group tolerance. In addition, anticholinergic tropicamide was easily synthesized in this way.
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Affiliation(s)
- Ben Ma
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China.
| | - Rongxia Sun
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China.
| | - Jingya Yang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China.
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5
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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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6
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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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7
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Wang L, Zhu H, Peng T, Yang D. Conjugated ynones in catalytic enantioselective reactions. Org Biomol Chem 2021; 19:2110-2145. [PMID: 33625439 DOI: 10.1039/d0ob02521f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Conjugated ynones are easily accessible feedstock and the existence of an alkyne bond endows ynones with different attractive reactivities, thus making them unique substrates for catalytic asymmetric reactions. Their compatibility under organocatalytic, metal-catalyzed as well as cooperative catalytic conditions has resulted in numerous enantioselective transformations. Importantly, conjugated ynones can act as nucleophiles or electrophiles, and serve as easily accessed synthons for different cyclization pathways. This review summarizes the recent literature examples of the catalytic reactions of conjugated ynones and related compounds such as alkyne conjugated α-ketoesters, and classifies these reaction types alongside mechanistic insights whenever possible. We aim to trigger more intensive research in the future to render the asymmetric transformation of ynones as a common and reliable tool for asymmetric synthesis.
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Affiliation(s)
- Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Tianyu Peng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
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8
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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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9
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Cui J, Kumagai N, Watanabe T, Shibasaki M. Direct catalytic asymmetric and anti-selective vinylogous addition of butenolides to chromones. Chem Sci 2020; 11:7170-7176. [PMID: 34123001 PMCID: PMC8159409 DOI: 10.1039/d0sc01914c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
An anti-selective catalytic asymmetric Michael-type vinylogous addition of β,γ-butenolides to chromones was developed. The catalyst system developed herein is characterized by tuning of the steric and electronic effects using a proper Biphep-type chiral ligand to invert the diastereoselection, and improvement of the catalyst turnover by a coordinative phenolic additive. The catalytic protocol renders potentially biologically active natural product analogs accessible in good yield with moderate diastereoselectivity and high enantiomeric purity, mostly greater than 99% ee.
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Affiliation(s)
- Jin Cui
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 141-0021 Japan
| | - Takumi Watanabe
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 141-0021 Japan
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10
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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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11
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Pilathottathil F, Vineet Kumar D, Kaliyamoorthy A. Synthesis of various acylating agents directly from carboxylic acids. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1747631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Fathima Pilathottathil
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, India
| | - Doppalapudi Vineet Kumar
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, India
| | - Alagiri Kaliyamoorthy
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, India
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12
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Pluta R, Li Z, Kumagai N, Shibasaki M. Z-Enolate Geometry in the Thioamide Aldol Reaction Illuminated by the 7-Azaindoline Auxiliary. Org Lett 2020; 22:791-794. [PMID: 31829612 DOI: 10.1021/acs.orglett.9b04120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Z or E enolate geometry is the primary determinant of diastereoselectivity in the aldol reaction. Although amide and thioamide enolates are anticipated to have predominantly the E geometry because of the intrinsic steric demand, spectroscopic confirmation of the geometry in solution has remained elusive, particularly in the realm of highly stereoselective catalytic asymmetric aldol reactions. Herein we demonstrate that the 7-azaindoline auxiliary enables direct observation of the exclusive formation of the Z-enolate of the thioamide en route to a highly syn-selective aldol reaction.
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Affiliation(s)
- Roman Pluta
- Institute of Microbial Chemistry , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Zhao Li
- Institute of Microbial Chemistry , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
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13
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Liu YW, Mao ZY, Nie XD, Si CM, Wei BG, Lin GQ. Approach to Tertiary-Type β-Hydroxyl Carboxamides Through Sc(OTf)3-Catalyzed Addition of Ynamides and Ketones. J Org Chem 2019; 84:16254-16261. [DOI: 10.1021/acs.joc.9b02854] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yi-Wen Liu
- Institutes of Biomedical Sciences and School of Pharmacy, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Zhuo-Ya Mao
- Institutes of Biomedical Sciences and School of Pharmacy, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xiao-Di Nie
- Institutes of Biomedical Sciences and School of Pharmacy, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Chang-Mei Si
- Institutes of Biomedical Sciences and School of Pharmacy, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Bang-Guo Wei
- Institutes of Biomedical Sciences and School of Pharmacy, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Guo-Qiang Lin
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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14
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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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15
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González-Fernández R, Crochet P, Cadierno V. Synthesis of β-hydroxyamides through ruthenium-catalyzed hydration/transfer hydrogenation of β-ketonitriles in water: Scope and limitations. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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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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17
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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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18
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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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19
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Kennington SCD, Taylor AJ, Romea P, Urpí F, Aullón G, Font-Bardia M, Ferré L, Rodrigalvarez J. Direct and Asymmetric Nickel(II)-Catalyzed Construction of Carbon-Carbon Bonds from N-Acyl Thiazinanethiones. Org Lett 2019; 21:305-309. [PMID: 30582705 DOI: 10.1021/acs.orglett.8b03757] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A wide array of new N-acyl thiazinanethiones are employed in a number of direct and enantioselective carbon-carbon-bond-forming reactions catalyzed by nickel(II) complexes. The electrophilic species are mostly prepared in situ from ortho esters, methyl ethers, acetals, and ketals, which makes the overall process highly efficient and experimentally straightforward. Theoretical calculations indicate that the reactions proceed through an open transition state in a SN1-like mechanism. The utility of this novel procedure has been demonstrated by the asymmetric preparation of synthetically useful intermediates and the total synthesis of peperomin D.
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Affiliation(s)
- Stuart C D Kennington
- 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
| | - Adam J Taylor
- 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
| | - Gabriel Aullón
- Department of Inorganic and Organic Chemistry, Section of Inorganic Chemistry , University of Barcelona , Carrer Martí i Franqués 1-11 , 08028 Barcelona , Catalonia , Spain
| | - Mercè Font-Bardia
- Unitat de Difracció de RX, CCiTUB, Universitat de Barcelona , Carrer Solé i Sabarís 1-3 , 08028 Barcelona , Catalonia , Spain
| | - Laura Ferré
- 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
| | - Jesus Rodrigalvarez
- 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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20
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Lu J, Fan Y, Sha F, Li Q, Wu XY. Copper-catalyzed enantioselective Mannich reaction between N-acylpyrazoles and isatin-derived ketimines. Org Chem Front 2019. [DOI: 10.1039/c9qo00575g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A copper-catalyzed enantioselective Mannich reaction between N-acylpyrazoles and isatin-derived ketimines is developed.
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Affiliation(s)
- Jian Lu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Ying Fan
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Feng Sha
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Qiong Li
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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21
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Zhang YP, You Y, Zhao JQ, Zhou XJ, Zhang XM, Xu XY, Yuan WC. A AgOAc/quinine-derived aminophosphine complex as an efficient catalyst for diastereo- and enantioselective 1,3-dipolar cycloaddition of α,β-unsaturated 7-azaindoline amides and azomethine ylides. Org Chem Front 2019. [DOI: 10.1039/c9qo00347a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The Dixon’s catalyst system is effective for the asymmetric 1,3-dipolar cycloaddition.
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Affiliation(s)
- Yan-Ping Zhang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Yong You
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Jian-Qiang Zhao
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Xiao-Jian Zhou
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xiao-Mei Zhang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xiao-Ying Xu
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
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22
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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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23
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Direct enolization chemistry of 7-azaindoline amides: A case study of bis(tetrahydrophosphole)-type ligands. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Takeuchi T, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α-Vinyl Acetamide. J Org Chem 2018; 83:5851-5858. [DOI: 10.1021/acs.joc.8b00743] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Toshifumi Takeuchi
- 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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25
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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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26
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Sun B, Pluta R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction en Route to α-Hydroxy-β-amino Acid Derivatives. Org Lett 2018; 20:526-529. [DOI: 10.1021/acs.orglett.7b03609] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Sun
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - 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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27
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Yamashita Y, Yasukawa T, Yoo WJ, Kitanosono T, Kobayashi S. Catalytic enantioselective aldol reactions. Chem Soc Rev 2018; 47:4388-4480. [DOI: 10.1039/c7cs00824d] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent developments in catalytic asymmetric aldol reactions have been summarized.
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Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Tomohiro Yasukawa
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Woo-Jin Yoo
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Taku Kitanosono
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Shū Kobayashi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
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28
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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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29
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Matsuzawa A, Noda H, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Addition of an α-CF3 Amide to Arylglyoxal Hydrates. J Org Chem 2017; 82:8304-8308. [DOI: 10.1021/acs.joc.7b01381] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akinobu Matsuzawa
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Hidetoshi Noda
- 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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30
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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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31
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Sun B, Balaji PV, Kumagai N, Shibasaki M. α-Halo Amides as Competent Latent Enolates: Direct Catalytic Asymmetric Mannich-Type Reaction. J Am Chem Soc 2017; 139:8295-8301. [PMID: 28530808 DOI: 10.1021/jacs.7b03291] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
α-Halogenated carbonyl compounds are susceptible to dehalogenation and thus largely neglected as enolate precursors in catalytic enantioselective C-C bond-forming reactions. By merging the increased stability of the α-C-halogen bond of amides and the direct enolization methodology of the designed amide, we explored a direct catalytic asymmetric Mannich-type reaction of α-halo 7-azaindoline amides with N-carbamoyl imines. All α-halo substituents, α-F, -Cl, -Br, -I amides, were tolerated to provide the Mannich-adducts in a highly stereoselective manner without undesirable dehalogenation. The diastereoselectivity switched intriguingly depending on the substitution pattern of the aromatic imines, which is ascribed to stereochemical differentiation based on the open transition-state model. Functional group interconversion of the 7-azaindoline amide moiety of the Mannich-adducts and further elaboration into a diamide without dehalogenation highlight the synthetic utility of the present protocol for accessing enantioenriched halogenated chemical entities.
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Affiliation(s)
- Bo Sun
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Pandur Venkatesan Balaji
- 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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32
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Miura T, Naruto M, Toda K, Shimomura T, Saito S. Multifaceted catalytic hydrogenation of amides via diverse activation of a sterically confined bipyridine-ruthenium framework. Sci Rep 2017; 7:1586. [PMID: 28512286 PMCID: PMC5434022 DOI: 10.1038/s41598-017-01645-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 04/03/2017] [Indexed: 11/26/2022] Open
Abstract
Amides are ubiquitous and abundant in nature and our society, but are very stable and reluctant to salt-free, catalytic chemical transformations. Through the activation of a “sterically confined bipyridine–ruthenium (Ru) framework (molecularly well-designed site to confine adsorbed H2 in)” of a precatalyst, catalytic hydrogenation of formamides through polyamide is achieved under a wide range of reaction conditions. Both C=O bond and C–N bond cleavage of a lactam became also possible using a single precatalyst. That is, catalyst diversity is induced by activation and stepwise multiple hydrogenation of a single precatalyst when the conditions are varied. The versatile catalysts have different structures and different resting states for multifaceted amide hydrogenation, but the common structure produced upon reaction with H2, which catalyzes hydrogenation, seems to be “H–Ru–N–H.”
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Affiliation(s)
- Takashi Miura
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Masayuki Naruto
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Katsuaki Toda
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Taiki Shimomura
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Susumu Saito
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.
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33
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34
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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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35
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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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36
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Noda H, Amemiya F, Weidner K, Kumagai N, Shibasaki M. Catalytic asymmetric synthesis of CF 3-substituted tertiary propargylic alcohols via direct aldol reaction of α-N 3 amide. Chem Sci 2017; 8:3260-3269. [PMID: 28553529 PMCID: PMC5424470 DOI: 10.1039/c7sc00330g] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 02/21/2017] [Indexed: 12/28/2022] Open
Abstract
Organofluorine compounds are found in several important classes of chemicals, such as pharmaceuticals, agrochemicals, and functional materials. Chemists have been immensely interested in the development of methodologies for expeditious access to fluorine containing building blocks. In this study, we report a new method for the catalytic asymmetric synthesis of CF3-substituted tertiary propargylic alcohols with two contiguous stereogenic centers via the direct aldol reaction of an α-N3 amide to trifluoromethyl ketones. The key to the success of this method is the identification of a catalyst comprising Cu(ii)/chiral hydroxamic acid to promote the desired aldol reaction, constructing a tetrasubstituted carbon in a highly stereoselective fashion. Despite substantial prior advances in asymmetric catalysis, this class of catalysts has not been utilized for the formation of carbon-carbon bond-forming reactions. Our mechanistic study sheds light on the unique profile of this catalytic system, where the Cu(ii) complex plays a bifunctional role of serving as a Lewis acid and a Brønsted base. Furthermore, the densely functionalized aldol adducts undergo chemoselective transformations, affording a series of fluorine containing chiral building blocks with widespread application.
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Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki, Shinagawa-ku , Tokyo 141-0021 , Japan . ;
| | - Fuyuki Amemiya
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki, Shinagawa-ku , Tokyo 141-0021 , Japan . ;
| | - Karin Weidner
- 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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37
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Liu Z, Takeuchi T, Pluta R, Arteaga Arteaga F, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α-Alkylamides. Org Lett 2017; 19:710-713. [DOI: 10.1021/acs.orglett.6b03890] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zijian Liu
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Toshifumi Takeuchi
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Roman Pluta
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Fernando Arteaga Arteaga
- 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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38
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González-Fernández R, Crochet P, Cadierno V. Ruthenium-Catalyzed Synthesis of β-Hydroxyamides from β-Ketonitriles in Water. Org Lett 2016; 18:6164-6167. [DOI: 10.1021/acs.orglett.6b03172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rebeca González-Fernández
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Departamento de Química Orgánica e Inorgánica,
IUQOEM, Universidad de Oviedo, Julián Clavería 8, E-33006 Oviedo, Spain
| | - Pascale Crochet
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Departamento de Química Orgánica e Inorgánica,
IUQOEM, Universidad de Oviedo, Julián Clavería 8, E-33006 Oviedo, Spain
| | - Victorio Cadierno
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Departamento de Química Orgánica e Inorgánica,
IUQOEM, Universidad de Oviedo, Julián Clavería 8, E-33006 Oviedo, Spain
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39
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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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40
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Affiliation(s)
- Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Motomu Kanai
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroaki Sasai
- The
Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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41
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Arteaga FA, Liu Z, Brewitz L, Chen J, Sun B, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction of Alkylamides. Org Lett 2016; 18:2391-4. [DOI: 10.1021/acs.orglett.6b00879] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fernando Arteaga Arteaga
- Institute
of Microbial Chemistry (Bikaken),
Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Zijian Liu
- Institute
of Microbial Chemistry (Bikaken),
Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Lennart Brewitz
- Institute
of Microbial Chemistry (Bikaken),
Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Jianyang Chen
- Institute
of Microbial Chemistry (Bikaken),
Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Bo Sun
- 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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42
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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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43
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Xu Y, Hua Z, Zhang J, Yang J, Cao Z, Zhang D, He L, J. Craig VS, Zhang G, Liu G. Mimicking enzymatic systems: modulation of the performance of polymeric organocatalysts by ion-specific effects. Chem Commun (Camb) 2016; 52:3392-5. [DOI: 10.1039/c5cc09959e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The performance of polymeric organocatalysts can be modulated by ion-specific effects based on the lessons learned from natural enzymatic systems.
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44
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Brewitz L, Arteaga FA, Yin L, Alagiri K, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction of α- and β-Fluorinated Amides. J Am Chem Soc 2015; 137:15929-39. [PMID: 26652911 DOI: 10.1021/jacs.5b11064] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The last two decades have witnessed the emergence of direct enolization protocols providing atom-economical and operationally simple methods to use enolates for stereoselective C-C bond-forming reactions, eliminating the inherent drawback of the preformation of enolates using stoichiometric amounts of reagents. In its infancy, direct enolization relied heavily on the intrinsic acidity of the latent enolates, and the reaction scope was limited to readily enolizable ketones and aldehydes. Recent advances in this field enabled the exploitation of carboxylic acid derivatives for direct enolization, offering expeditious access to synthetically versatile chiral building blocks. Despite the growing demand for enantioenriched fluorine-containing small molecules, α- and β-fluorinated carbonyl compounds have been neglected in direct enolization chemistry because of the competing and dominating defluorination pathway. Herein we present a comprehensive study on direct and highly stereoselective Mannich-type reactions of α- and β-fluorine-functionalized 7-azaindoline amides that rely on a soft Lewis acid/hard Brønsted base cooperative catalytic system to guarantee an efficient enolization while suppressing undesired defluorination. This protocol contributes to provide a series of fluorinated analogs of enantioenriched β-amino acids for medicinal chemistry.
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Affiliation(s)
| | | | - Liang Yin
- Institute of Microbial Chemistry (BIKAKEN) , Tokyo, Kamiosaki 3-14-23, Shinagawa-ku, Tokyo 141-0021, Japan
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45
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Bao Y, Kumagai N, Shibasaki M. Managing the retro-pathway in direct catalytic asymmetric aldol reactions of thioamides. Chem Sci 2015; 6:6124-6132. [PMID: 30090227 PMCID: PMC6054082 DOI: 10.1039/c5sc02218e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/30/2015] [Indexed: 11/21/2022] Open
Abstract
Thioamides are the preferred pronucleophiles for direct catalytic asymmetric aldol reactions in the context of soft Lewis acid/hard Brønsted base cooperative catalysis. In-depth investigation of this proton-transfer catalysis, which is virtually in equilibrium, revealed that the prominence of the retro-aldol reaction depended on the substrate combination. The retro-aldol reaction is a serious issue in direct aldol reactions because the product distribution, including enantiomers and diastereomers, is governed by thermodynamic parameters, and the aldol products are obtained in much lower stereoselectivity compared with the kinetically controlled process. Herein we report the beneficial effect of an additive with a functional group architecture similar to that of the aldol adduct that suppresses the retro-aldol reaction by competitively binding to the catalyst. Strategic use of the additive led to high stereoselectivity, even when the combination of substrates was prone to the retro-aldol reaction.
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Affiliation(s)
- Youmei Bao
- 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 . ;
- JST , ACT-C , 3-14-23 Kamiosaki, Shinagawa-ku , Tokyo 141-0021 , Japan
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46
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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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47
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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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48
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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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49
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Hu XM, Zhang DX, Zhang SY, Wang PA. Highly modular dipeptide-like organocatalysts for direct asymmetric aldol reactions in brine. RSC Adv 2015. [DOI: 10.1039/c5ra07019h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The dipeptide-like organocatalysts have been developed for asymmetric aldol reactions in brine to achieve high yields and enantioselectivities with 1 mol% catalyst-loading.
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Affiliation(s)
- Xiao-Mu Hu
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Dong-Xu Zhang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Sheng-Yong Zhang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Ping-An Wang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
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50
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Yin L, Brewitz L, Kumagai N, Shibasaki M. Catalytic generation of α-CF3 enolate: direct catalytic asymmetric Mannich-type reaction of α-CF3 amide. J Am Chem Soc 2014; 136:17958-61. [PMID: 25495289 DOI: 10.1021/ja511458k] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The introduction of the CF3 unit is a common strategy for modifying pharmacokinetic properties and slowing metabolic degradation in medicinal chemistry. A catalytic and enantioselective addition of α-CF3 enolates allows for expeditious access to functionalized chiral building blocks with CF3-containing stereogenicity. To date, α-CF3 enolates have been a less explored class of nucleophiles because of rapid defluorination. The present study reveals that a designed α-CF3 amide enables a direct asymmetric Mannich-type reaction in a cooperative catalytic system.
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Affiliation(s)
- Liang Yin
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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