1
|
Yan HH, Sha F, Wu XY. Copper-catalyzed enantioselective 1,4-hydroboration of α,β-unsaturated amides. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
2
|
Cui J, Oriez R, Noda H, Watanabe T, Shibasaki M. Concise and Stereodivergent Approach to Chromanone Lactones through Copper‐Catalyzed Asymmetric Vinylogous Addition of Siloxyfurans to 2‐Ester‐Substituted Chromones. Angew Chem Int Ed Engl 2022; 61:e202203128. [DOI: 10.1002/anie.202203128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Jin Cui
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Raphaël Oriez
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Takumi Watanabe
- 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
| |
Collapse
|
3
|
Cui J, Oriez R, Noda H, Watanabe T, Shibasaki M. Concise and Stereodivergent Approach to Chromanone Lactones through Copper‐Catalyzed Asymmetric Vinylogous Addition of Siloxyfurans to 2‐Ester‐Substituted Chromones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jin Cui
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Raphaël Oriez
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3-14-23 Kamiosaki Shinagawa-ku, Tokyo 141-0021 Japan
| | - Takumi Watanabe
- 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
| |
Collapse
|
4
|
Ishii D, Hirashima S, Akutsu H, Nakashima K, Matsushima Y, Sakai T, Miura T. Asymmetric Direct Vinylogous Conjugate Addition of Substituted Furanone Derivatives to (
E
)‐ and (
Z)
‐Benzoyl Acrylonitriles Using Organocatalysts. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daiki Ishii
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Shin‐ichi Hirashima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Hiroshi Akutsu
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Kosuke Nakashima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yasuyuki Matsushima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Takaaki Sakai
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Tsuyoshi Miura
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| |
Collapse
|
5
|
K. Pagire S, Kumagai N, Shibasaki M. Highly Enantio- and Diastereoselective Synthesis of 1,2,3-Trisubstituted Cyclopropanes from α,β-Unsaturated Amides and Stabilized Sulfur Ylides Catalyzed by a Chiral Copper(I) Complex. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Santosh K. Pagire
- 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
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| |
Collapse
|
6
|
Lecachey B, Palais L, de Courcy B, Bouauli S, Durandetti M, Oulyadi H, Harisson-Marchand A, Maddaluno J, Gérard H, Vrancken E, Campagne JM. Intertwined Analytical, Experimental and Theoretical Studies on the Formation and Structure of a Copper Dienolate. Chemistry 2021; 27:7942-7950. [PMID: 33780058 DOI: 10.1002/chem.202100596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Indexed: 11/06/2022]
Abstract
The reaction of a silyl dienolate, a Cu(II) salt and TBAT yielding the corresponding copper dienolate is addressed. A combined NMR and cyclic voltammetry analysis first highlight the role of TBAT in the Cu(II) to Cu(I) reduction and the structure of the precatalytic species. From these first results a second set of NMR and theoretical studies enable the determination of the structure and the mechanism of formation of the copper dienolate catalytic species. Finally, we showed that that the copper catalyst promote the E/Z s-cis/s-trans equilibration of the silyl dienolate precursor through a copper dienolate intermediate. All of these results unveil some peculiarities of the catalytic and asymmetric vinylogous Mukaiyama reaction.
Collapse
Affiliation(s)
| | - Laetitia Palais
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Benoît de Courcy
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
| | - Samira Bouauli
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
| | - Muriel Durandetti
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Hassan Oulyadi
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Anne Harisson-Marchand
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Jacques Maddaluno
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Hélène Gérard
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
| | | | | |
Collapse
|
7
|
Li Z, Kumagai N, Shibasaki M. Catalytic Asymmetric 1,3-Dipolar Cycloaddition of α,β-Unsaturated Amide and Azomethine Imine. Chem Pharm Bull (Tokyo) 2021; 68:552-554. [PMID: 32475860 DOI: 10.1248/cpb.c20-00130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
α,β-Unsaturated amides were incorporated as viable dipolarophiles in a catalytic asymmetric 1,3-dipolar cycloaddition of azomethine imines. The use of a 7-azaindoline auxiliary was essential to acquire sufficient reactivity with excellent diastereoselectivity, likely due to the chelating activation of the amide by the In(III)/bishydroxamic acid complex. Although the enantioselectivity remains unsatisfactory, this work is an important step toward the development of an asymmetric catalysis utilizing stable and low-reactive substrates.
Collapse
Affiliation(s)
- Zhao Li
- Institute of Microbial Chemistry
| | | | | |
Collapse
|
8
|
Ishii D, Hirashima SI, Nakashima K, Akutsu H, Sakai T, Matsushima Y, Kawada M, Miura T. Asymmetric Direct Vinylogous Conjugate Addition of Substituted Furanone Derivatives to Benzoyl Acrylonitrile: Stereoselective Synthesis Toward Bicyclic γ-Lactams. Org Lett 2020; 23:480-485. [DOI: 10.1021/acs.orglett.0c04004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daiki Ishii
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hiroshi Akutsu
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Takaaki Sakai
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuyuki Matsushima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Masahiro Kawada
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
9
|
Jaiswal MK, Kumar R, Singh S, Jain S, Vanka K, Singh RP. The Vinylogous Michael Addition of 3‐Alkylidene‐2‐oxindoles to β,γ‐Unsaturated α‐Keto Esters by Bifunctional Cinchona Alkaloids. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000835] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Manish K. Jaiswal
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Rajesh Kumar
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Sanjay Singh
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Shailija Jain
- Physical and Materials Chemistry Division National Chemical Laboratory Dr. Homi Bhabha Road 411008 Pune India
| | - Kumar Vanka
- Physical and Materials Chemistry Division National Chemical Laboratory Dr. Homi Bhabha Road 411008 Pune India
| | - Ravi P. Singh
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| |
Collapse
|
10
|
Liu D, Wang J, Liu W, Zhang F, Zhou Y. Synthesis of Polycyclic Spiro Pyrrolidone Derivatives via DBU‐Catalyzed Diastereoselective Vinylogous Aldol‐Michael Cascade Reaction. ChemCatChem 2020. [DOI: 10.1002/cctc.202000463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dandan Liu
- Chemistry and Environment Engineering CollegePingdingshan University Pingdingshan 475000 P. R. China
| | - Jiansheng Wang
- Chemistry and Environment Engineering CollegePingdingshan University Pingdingshan 475000 P. R. China
| | - Wenqin Liu
- School of Chemistry Chemical Engineering and Life SciencesWuhan University of Technology Wuhan 430070 P. R. China
| | - Fang‐Lin Zhang
- School of Chemistry Chemical Engineering and Life SciencesWuhan University of Technology Wuhan 430070 P. R. China
| | - Yirong Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of Pharmacy Tongji Medical CollegeHuazhong University of Science and Technology Wuhan 430030 P. R. China
| |
Collapse
|
11
|
Pagire SK, Kumagai N, Shibasaki M. Introduction of a 7-aza-6-MeO-indoline auxiliary in Lewis-acid/photoredox cooperative catalysis: highly enantioselective aminomethylation of α,β-unsaturated amides. Chem Sci 2020; 11:5168-5174. [PMID: 34122973 PMCID: PMC8159422 DOI: 10.1039/d0sc01890b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
An efficient cooperative chiral Lewis acid/photoredox catalytic system for engaging highly reactive radicals in highly enantioselective conjugate addition to α,β-unsaturated carbonyls is highly desirable. Direct photoexcitation of unbound substrates typically induces undesired background pathways for racemic products and remains a formidable challenge to be addressed in the area of enantioselective photocatalysis. Herein, we report a cooperative catalytic system comprising a chiral Cu(i) complex and an Ir(iii) photocatalyst fueled by visible-light irradiation that allows for seamless integration of the catalytic formation of α-amino alkyl radicals and subsequent enantioselective addition to α,β-unsaturated amides. A 7-aza-6-MeO-indoline attachment on the amide substrates plays a pivotal role in suppressing the undesired pathways, resulting in excellent enantioselectivity and enabling expedited access to valuable γ-aminobutyramides. The indoline amide was readily diversified with full recovery of the azaindoline attachment, highlighting the synthetic utility of this cooperative catalytic system. An efficient cooperative chiral Lewis acid and photoredox catalytic system towards the highly enantioselective radical conjugate addition of α-amino radicals to α,β-unsaturated amides is developed with the implementation of unique auxiliaries.![]()
Collapse
Affiliation(s)
- Santosh K Pagire
- 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
| |
Collapse
|
12
|
Ray Choudhury A, Mukherjee S. Deconjugated butenolide: a versatile building block for asymmetric catalysis. Chem Soc Rev 2020; 49:6755-6788. [PMID: 32785345 DOI: 10.1039/c9cs00346k] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Deconjugated butenolides have emerged as a popular synthon for the enantioselective synthesis of γ-lactones. This review provides a comprehensive overview on the catalytic asymmetric reactions of deconjugated butenolides reported till date.
Collapse
Affiliation(s)
| | - Santanu Mukherjee
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
| |
Collapse
|
13
|
Bai Z, Zhang C, Chen Y, Liu A, Wang X, Yan C, Liu X, Zhang X, Li Y, Yuan Y, Ge Z, Pang J, Chai Y, Wang X, Li R. A vinylogous Michael reaction of 2-furanone dimers with α,β-unsaturated nitroolefins for constructing chiral γ,γ-disubstituted butenolides. Org Chem Front 2020. [DOI: 10.1039/d0qo00376j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An asymmetric vinylogous Michael reaction of 2-furanone dimers with α,β-unsaturated nitroolefins utilizing bifunctional thiourea as a catalyst has been developed, which provides an easy access to a wide range of chiral γ,γ-disubstituted butenolides.
Collapse
|
14
|
Wang Y, Xiong Q, Lu L, Zhang Q, Wang Y, Lan Y, Xiao W. Inverse‐Electron‐Demand Palladium‐Catalyzed Asymmetric [4+2] Cycloadditions Enabled by Chiral P,S‐Ligand and Hydrogen Bonding. Angew Chem Int Ed Engl 2019; 58:11013-11017. [DOI: 10.1002/anie.201905993] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Ya‐Ni Wang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qin Xiong
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 China
| | - Liang‐Qiu Lu
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qun‐Liang Zhang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Ying Wang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu Lan
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
- Key Lab of Functional Molecular Engineering of Guangdong ProvinceSouth China University of Technology Guangdong 510006 China
| |
Collapse
|
15
|
Wang Y, Xiong Q, Lu L, Zhang Q, Wang Y, Lan Y, Xiao W. Inverse‐Electron‐Demand Palladium‐Catalyzed Asymmetric [4+2] Cycloadditions Enabled by Chiral P,S‐Ligand and Hydrogen Bonding. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905993] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ya‐Ni Wang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qin Xiong
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 China
| | - Liang‐Qiu Lu
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qun‐Liang Zhang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Ying Wang
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu Lan
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
- Key Lab of Functional Molecular Engineering of Guangdong ProvinceSouth China University of Technology Guangdong 510006 China
| |
Collapse
|
16
|
Zhang YP, You Y, Zhao JQ, Zhang XM, Xu XY, Yuan WC. Chiral Bifunctional Amine-Squaramide-Catalyzed Highly Diastereo- and Enantioselective Michael/Aldol Cascade Reaction of 2-Mercaptobenzaldehyde and α,β-Unsaturated 7-Azaindoline Amides. J Org Chem 2019; 84:7984-7994. [DOI: 10.1021/acs.joc.9b00837] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yan-Ping Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, 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-Mei Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiao-Ying Xu
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| |
Collapse
|
17
|
Sakai T, Hirashima SI, Matsushima Y, Nakano T, Ishii D, Yamashita Y, Nakashima K, Koseki Y, Miura T. Synthesis of Chiral γ,γ-Disubstituted γ-Butenolides via Direct Vinylogous Aldol Reaction of Substituted Furanone Derivatives with Aldehydes. Org Lett 2019; 21:2606-2609. [DOI: 10.1021/acs.orglett.9b00574] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Takaaki Sakai
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuyuki Matsushima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tatsuki Nakano
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Daiki Ishii
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yoshifumi Yamashita
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yuji Koseki
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
18
|
Li SW, Du Y, Kang Q. A chiral-at-metal asymmetric catalyzed vinylogous Michael addition of ortho-methyl aromatic nitro compounds for isoxazole derivative synthesis. Org Chem Front 2019. [DOI: 10.1039/c9qo00676a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A chiral-at-metal rhodium(iii) complex catalyzed asymmetric vinylogous Michael addition of 5-methyl 4-nitroisoxazoles with α,β-unsaturated 2-acyl imidazoles has been developed, delivering the corresponding adducts with up to 96% yield and 97% ee.
Collapse
Affiliation(s)
- Shi-Wu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Yu Du
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| |
Collapse
|
19
|
Gupta V, Singh RP. Enantioselective vinylogous Michael addition of β,γ-unsaturated butenolide to 2-iminochromenes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01584a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient organocatalyzed asymmetric synthesis of 2-amino-4H-(2-furanone)-3-carbonitrile via vinylogous Michael addition of non-activated β,γ-unsaturated butenolide to 2-iminochromenes has been realized.
Collapse
Affiliation(s)
- Vijay Gupta
- Department of Chemistry
- Indian Institute of Technology Delhi
- Hauz Khas
- India
| | - Ravi P. Singh
- Department of Chemistry
- Indian Institute of Technology Delhi
- Hauz Khas
- India
| |
Collapse
|
20
|
Wang ZH, Zhang XY, Lei CW, Zhao JQ, You Y, Yuan WC. Highly enantioselective sequential vinylogous aldol reaction/transesterification of methyl-substituted olefinic butyrolactones with isatins for the construction of chiral spirocyclic oxindole-dihydropyranones. Chem Commun (Camb) 2019; 55:9327-9330. [DOI: 10.1039/c9cc04427b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A highly stereoselective sequential vinylogous aldol reaction/transesterification of methyl-substituted olefinic butyrolactones and isatins was developed with 10 mol% Takemoto's amine–thiourea catalyst.
Collapse
Affiliation(s)
- Zhen-Hua Wang
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Xia-Yan Zhang
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Chuan-Wen Lei
- National Engineering Research Center of Chiral Drugs
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Jian-Qiang Zhao
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Yong You
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Wei-Cheng Yuan
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
- National Engineering Research Center of Chiral Drugs
| |
Collapse
|
21
|
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.
Collapse
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
| |
Collapse
|
22
|
|
23
|
Hayama N, Kuramoto R, Földes T, Nishibayashi K, Kobayashi Y, Pápai I, Takemoto Y. Mechanistic Insight into Asymmetric Hetero-Michael Addition of α,β-Unsaturated Carboxylic Acids Catalyzed by Multifunctional Thioureas. J Am Chem Soc 2018; 140:12216-12225. [PMID: 30215516 DOI: 10.1021/jacs.8b07511] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Carboxylic acids and their corresponding carboxylate anions are generally utilized as Brønsted acids/bases and oxygen nucleophiles in organic synthesis. However, a few asymmetric reactions have used carboxylic acids as electrophiles. Although chiral thioureas bearing both arylboronic acid and tertiary amine were found to promote the aza-Michael addition of BnONH2 to α,β-unsaturated carboxylic acids with moderate to good enantioselectivities, the reaction mechanism remains to be clarified. Detailed investigation of the reaction using spectroscopic analysis and kinetic studies identified tetrahedral borate complexes, comprising two carboxylate anions, as reaction intermediates. We realized a dramatic improvement in product enantioselectivity with the addition of 1 equiv of benzoic acid. In this aza-Michael reaction, the boronic acid not only activates the carboxylate ligand as a Lewis acid, together with the thiourea NH-protons, but also functions as a Brønsted base through a benzoyloxy anion to activate the nucleophile. Moreover, molecular sieves were found to play an important role in generating the ternary borate complexes, which were crucial for obtaining high enantioselectivity as demonstrated by DFT calculations. We also designed a new thiourea catalyst for the intramolecular oxa-Michael addition to suppress another catalytic pathway via a binary borate complex using steric hindrance between the catalyst and substrate. Finally, to demonstrate the synthetic versatility of both hetero-Michael additions, we used them to accomplish the asymmetric synthesis of key intermediates in pharmaceutically important molecules, including sitagliptin and α-tocopherol.
Collapse
Affiliation(s)
- Noboru Hayama
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Ryuta Kuramoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Tamás Földes
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Kazuya Nishibayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yusuke Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Imre Pápai
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| |
Collapse
|
24
|
Deepake SK, Lanjewar AB, Thatikonda T, Gonnade RG, Das U. Organocatalytic Asymmetric Cascade Reaction of γ-Substituted Deconjugated Butenolides witho-Formyl-β-nitrostyrene. ChemistrySelect 2018. [DOI: 10.1002/slct.201801467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Siddharth K. Deepake
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110020 India
| | - Atul B. Lanjewar
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Pune 411008 India
| | - Thanusha Thatikonda
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Pune 411008 India
| | - Rajesh G. Gonnade
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110020 India
- Centre for Materials Characterization; CSIR - National Chemical Laboratory
| | - Utpal Das
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110020 India
| |
Collapse
|
25
|
Rout S, Joshi H, Singh VK. Asymmetric Construction of Remote Vicinal Quaternary and Tertiary Stereocenters via Direct Doubly Vinylogous Michael Addition. Org Lett 2018; 20:2199-2203. [DOI: 10.1021/acs.orglett.8b00493] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Subhrajit Rout
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Harshit Joshi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, MP, India
| |
Collapse
|
26
|
Uraguchi D, Shibazaki R, Tanaka N, Yamada K, Yoshioka K, Ooi T. Catalyst-Enabled Site-Divergent Stereoselective Michael Reactions: Overriding Intrinsic Reactivity of Enynyl Carbonyl Acceptors. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Ryo Shibazaki
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Naoya Tanaka
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Kohei Yamada
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Ken Yoshioka
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
- CREST, Japan Science and Technology Agency (JST); Nagoya University; Nagoya 464-8601 Japan
| |
Collapse
|
27
|
Uraguchi D, Shibazaki R, Tanaka N, Yamada K, Yoshioka K, Ooi T. Catalyst-Enabled Site-Divergent Stereoselective Michael Reactions: Overriding Intrinsic Reactivity of Enynyl Carbonyl Acceptors. Angew Chem Int Ed Engl 2018; 57:4732-4736. [DOI: 10.1002/anie.201800057] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Ryo Shibazaki
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Naoya Tanaka
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Kohei Yamada
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Ken Yoshioka
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8601 Japan
- CREST, Japan Science and Technology Agency (JST); Nagoya University; Nagoya 464-8601 Japan
| |
Collapse
|
28
|
Tang Q, Lin L, Ji J, Hu H, Liu X, Feng X. Catalytic Asymmetric Direct Vinylogous Aldol Reaction of Isatins with β,γ-Unsaturated Butenolides. Chemistry 2017; 23:16447-16451. [DOI: 10.1002/chem.201704100] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/24/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Qiong Tang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Jie Ji
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Haipeng Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| |
Collapse
|
29
|
Kumar K, Jaiswal MK, Singh RP. Asymmetric Vinylogous Aldol Reaction ofα-ketoesters with 3-alkylidene oxindoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700758] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Krishna Kumar
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| | - Manish K. Jaiswal
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| | - Ravi P. Singh
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| |
Collapse
|
30
|
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
| |
Collapse
|
31
|
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.
Collapse
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 . ;
| |
Collapse
|
32
|
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
| |
Collapse
|
33
|
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
| |
Collapse
|