1
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Uwaso Y, Yokoyama N, Kano T. Synthesis of biphenyl-based chiral amine catalysts from dibromopyrenes and their application in enamine catalysis. Org Biomol Chem 2023; 21:6484-6487. [PMID: 37526571 DOI: 10.1039/d3ob01059g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Novel axially chiral biphenyl-based amine catalysts have been designed and synthesized from dibromopyrenes. These chiral amines function as effective catalysts for asymmetric reactions through enamine intermediates.
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Affiliation(s)
- Yuki Uwaso
- Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Naoki Yokoyama
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan.
| | - Taichi Kano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan.
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2
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Li Q, Xu L, Ma D. Cu‐Catalyzed Coupling Reactions of Sulfonamides with (Hetero)Aryl Chlorides/Bromides. Angew Chem Int Ed Engl 2022; 61:e202210483. [DOI: 10.1002/anie.202210483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Qiaoli Li
- Department of Chemistry University of Science and Technology of China 96 Jinzhai Lu Hefei 230026 China
| | - Lanting Xu
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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3
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Li Q, Xu L, Ma D. Cu‐Catalyzed Coupling Reactions of Sulfonamides with (Hetero)Aryl Chlorides/Bromides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qiaoli Li
- University of Science and Technology of China Department of Chemistry CHINA
| | - Lanting Xu
- Shanghai Institute Of Organic Chemistry State Key Laboratory of Bioorganic Chemistry State Key Laboratory of Bioorganic & Natural Products Chemistry CHINA
| | - Dawei Ma
- Shanghai Institute of Organic Chemistry State Key Lab. of Bio. Nat. Prod. Chem. 345 Lingling LuShanghai 200032 Shanghai CHINA
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4
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Patel PN, Talati KS, Deshmukh AG, Desai DH, Patel NC. Secondary Amine Catalysed Diastereoselective Cross Domino Reaction: Simple and Efficient Synthesis of Heteroaryl-Substituted Cyclohexanols. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222040107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Lee HJ, Maruoka K. Design of Bifunctional Amino Tf-Amide Organocatalysts and Application in Various Asymmetric Transformations. CHEM REC 2022; 22:e202200004. [PMID: 35179310 DOI: 10.1002/tcr.202200004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 11/08/2022]
Abstract
In this personal account, we describe our recent developments on the four types of amino Tf-amide catalysts in asymmetric transformations. Firstly, axially chiral biaryl-based secondary-amino Tf-amide catalyzed various stereoselective reactions via enamine intermediates. Secondly, pyrrolidine-based secondary-amino aliphatic Tf-amide catalyzed asymmetric direct Mannich reaction. Thirdly, chiral primary-amino aliphatic Tf-amide catalyzed asymmetric direct aldol reaction and conjugate addition. Finally, modified chiral amino aromatic Tf-amide catalyzed asymmetric transformations. These four different strategies are illustrated by using various organocatalyzed asymmetric transformations.
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Affiliation(s)
- Hyo-Jun Lee
- Department of Chemistry, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto, 606-8501, Japan.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
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6
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Homma C, Kano T. Design and Synthesis of Phenylcyclopropane-based Chiral Amine Catalysts and Their Application in Asymmetric Reactions. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.92] [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)
| | - Taichi Kano
- Department of Applied Chemistry, Tokyo University of Agriculture and Technology
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7
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Synthesis of alkynyl Z-ketimines and their application in amine-catalyzed asymmetric Mannich reactions and conjugate addition. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Tang N, Song X, Yang T, Qiu R, Yin SF. Synthesis and structure of the bimetallic organoantimony catalyst and its application in diastereoselective direct Mannich reaction as facile separation catalytic system. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Lu H, Lv J, Zhou C, Zhou M, Fang Y, Dong J, Kato T, Liu Y, Maruoka K. Remarkable Effect of
tert
‐Amine Additives in the Asymmetric Direct Michael Reaction of Ketones with β‐Arylnitroethenes Catalyzed by an
L
‐Hydroxyproline‐Based Amino Tf‐Amide Organocatalyst. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hanbin Lu
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Jiamin Lv
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Canhua Zhou
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Mi Zhou
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Yanxiong Fang
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Jinxiang Dong
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Terumasa Kato
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Yan Liu
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou China
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo 606-8501 Kyoto Japan
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10
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Homma C, Kano T, Maruoka K. Bifunctional amino sulfonamide-catalyzed asymmetric conjugate addition to alkenyl alkynyl ketimines as enone surrogates. Chem Commun (Camb) 2021; 57:2808-2811. [PMID: 33600542 DOI: 10.1039/d0cc07842e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A bifunctional amino sulfonamide-catalyzed asymmetric conjugate addition of aldehydes to alkenyl alkynyl ketimines as reactive surrogates for enones has been developed. Use of a phenylcyclopropane-based amino sulfonamide catalyst, which can activate and orient the ketimines through hydrogen bonding, affords the desired conjugate adducts with high chemo-, diastereo- and enantioselectivity.
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Affiliation(s)
- Chihiro Homma
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
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11
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Homma C, Takeshima A, Kano T, Maruoka K. Construction of chiral α- tert-amine scaffolds via amine-catalyzed asymmetric Mannich reactions of alkyl-substituted ketimines. Chem Sci 2020; 12:1445-1450. [PMID: 34163907 PMCID: PMC8179053 DOI: 10.1039/d0sc05269h] [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: 12/14/2022] Open
Abstract
Stereoselective Mannich reactions of aldehydes with ketimines provide chiral β-amino aldehydes that bear an α-tert-amine moiety. However, the structural variation of the ketimines is limited due to the formation of inseparable E/Z isomers, low reactivity, and other synthetic difficulties. In this study, a highly diastereodivergent synthesis of hitherto difficult-to-access β-amino aldehydes that bear a chiral α-tert-amine moiety was achieved using the amine-catalyzed Mannich reactions of aldehydes with less-activated Z-ketimines that bear both alkyl and alkynyl groups.
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Affiliation(s)
- Chihiro Homma
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Aika Takeshima
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Taichi Kano
- Department of Chemistry, Graduate School of Science, Kyoto University Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Graduate School of Science, Graduate School of Pharmaceutical Sciences, Kyoto University Kyoto 606-8502 Japan .,School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
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12
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Horibe T, Hazeyama T, Nakata Y, Takeda K, Ishihara K. Enantioselective 1,4‐Addition Reaction of α,β‐Unsaturated Carboxylic Acids with Cycloalkanones Using Cooperative Chiral Amine–Boronic Acid Catalysts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takahiro Horibe
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Takashi Hazeyama
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Yuto Nakata
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Kazuki Takeda
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
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13
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Horibe T, Hazeyama T, Nakata Y, Takeda K, Ishihara K. Enantioselective 1,4‐Addition Reaction of α,β‐Unsaturated Carboxylic Acids with Cycloalkanones Using Cooperative Chiral Amine–Boronic Acid Catalysts. Angew Chem Int Ed Engl 2020; 59:17256-17260. [DOI: 10.1002/anie.202007639] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Takahiro Horibe
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Takashi Hazeyama
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Yuto Nakata
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Kazuki Takeda
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering Nagoya University B2-3(611) Furo-cho, Chikusa Nagoya 464-8603 Japan
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14
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Sarkale AM, Appayee C. Stereodivergent Synthesis of 1-Hydroxymethylpyrrolizidine Alkaloids. Org Lett 2020; 22:4355-4359. [PMID: 32459490 DOI: 10.1021/acs.orglett.0c01375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A first stereodivergent strategy for the asymmetric synthesis of all stereoisomers of 1-hydroxymethylpyrrolizidine alkaloids is developed using an asymmetric self-Mannich reaction as a key step. An anti-selective self-Mannich reaction of methyl 4-oxobutanoate with the PMP-amine catalyzed by a chiral secondary amine is successfully optimized for the asymmetric synthesis of (+)-isoretronecanol and (-)-isoretronecanol. A syn-selective self-Mannich reaction catalyzed by proline is utilized for the asymmetric synthesis of the diastereomer, (+)-laburnine, and its enantiomer, (-)-trachelanthamidine.
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Affiliation(s)
- Abhijeet M Sarkale
- Discipline of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382355, India
| | - Chandrakumar Appayee
- Discipline of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382355, India
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15
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Takeshima A, Kano T, Maruoka K. Synthesis of Phenylcyclopropane-Based Secondary Amine Catalysts and Their Applications in Enamine Catalysis. Org Lett 2019; 21:8071-8074. [PMID: 31513419 DOI: 10.1021/acs.orglett.9b03070] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel chiral motif based on a phenylcyclopropane scaffold has been designed, and a facile synthetic route to the key intermediate for the synthesis of phenylcyclopropane-based chiral secondary amines has been developed. Newly synthesized chiral amines function as effective catalysts for several asymmetric reactions through enamine intermediates.
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Affiliation(s)
- Aika Takeshima
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan
| | - Taichi Kano
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo, Kyoto 606-8502 , Japan.,Department of Organocatalytic Chemistry, Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo, Kyoto 606-8501 , Japan.,School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
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16
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Zou S, Li W, Fu K, Cao W, Lin L, Feng X. Chiral
N
,
N
′‐Dioxide/Tm(OTf)
3
Complex‐Catalyzed Asymmetric Bisvinylogous Mannich Reaction of Silyl Ketene Acetal with Aldimines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900164] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sijia Zou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Weiwei Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Kai Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of ChemistrySichuan University Chengdu 610064 People's Republic of China
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17
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Dai QS, Zhang X, Yang KC, Li MH, Yang J, Li QZ, Feng X, Han B, Li JL. Chiral Amine-Catalyzed Stereoselective [4+2] Annulations of Alkenyl Thiazolones and Aliphatic Aldehydes via
a Step-Wise Mechanism. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800806] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qing-Song Dai
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xiang Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Mao-Hua Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Jie Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xin Feng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources; Chengdu University of Traditional Chinese Medicine; Chengdu 611137 PR China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
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18
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Patel PN, Chadha A. A simple metal free highly diastereoselective synthesis of heteroaryl substituted (±) cyclohexanols by a branched domino reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Dai J, Xiong D, Yuan T, Liu J, Chen T, Shao Z. Chiral Primary Amine Catalysis for Asymmetric Mannich Reactions of Aldehydes with Ketimines: Stereoselectivity and Reactivity. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jun Dai
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
| | - Dan Xiong
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
| | - Tengrui Yuan
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
| | - Juan Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
| | - Tao Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
| | - Zhihui Shao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education, School of Chemical Science and Technology Yunnan University Kunming 650091 China
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20
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Dai J, Xiong D, Yuan T, Liu J, Chen T, Shao Z. Chiral Primary Amine Catalysis for Asymmetric Mannich Reactions of Aldehydes with Ketimines: Stereoselectivity and Reactivity. Angew Chem Int Ed Engl 2017; 56:12697-12701. [PMID: 28786162 DOI: 10.1002/anie.201706304] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/17/2017] [Indexed: 01/01/2023]
Abstract
The application potential of primary amine catalysts in the context of Mannich reactions of aldehydes with ketimines is exemplified by isatin-derived ketimines and cyclic trifluoromethyl ketimines. Primary amine catalysts exhibit either unusual stereoselectivity or reactivity, which is not observable with secondary amine catalysts. Moreover, reversal of diastereofacial selectivity between primary and secondary amine catalysts is disclosed. These new reactions provide useful methods for the syntheses of chiral 3-substituted 3-amino-2-oxindoles and dihydroquinazolinones bearing a trifluoromethylated quaternary stereocenter. The synthetic utility of the reactions is demonstrated through the formal synthesis of AG-041R and DPC 083 and the total synthesis of (-)-psychotriasine.
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Affiliation(s)
- Jun Dai
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Dan Xiong
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Tengrui Yuan
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Juan Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Tao Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Zhihui Shao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
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21
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Wu H, An H, Mo SC, Kodadek T. Asymmetric synthesis of vinylogous β-amino acids and their incorporation into mixed backbone oligomers. Org Biomol Chem 2017; 15:3255-3264. [PMID: 28346549 PMCID: PMC7243482 DOI: 10.1039/c7ob00333a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral vinylogous β-amino acids (VBAA) were synthesized using enantioselective Mannich reactions of aldehydes with in situ generated N-carbamoyl imines followed by a Horner-Wadsworth-Emmons reaction. The efficiency with which these units could be incorporated into oligomers with different moieties on the C- and N-terminal sides was established, as was the feasibility of sequencing oligomers containing VBAAs by tandem mass spectrometry. The data show that VBAAs will be useful building blocks for the construction of combinatorial libraries of peptidomimetic compounds.
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Affiliation(s)
- Hao Wu
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA.
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22
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Sakamoto R, Maruoka K. The Design of Environmentally-Benign, High-Performance Organocatalysts for Asymmetric Catalysis. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.1141] [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)
| | - Keiji Maruoka
- Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry Department of Chemistry, Graduate School of Science, Kyoto University
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23
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Holiyachi M, Shastri SL, Chougala BM, Shastri LA, Sunagar VA. Highly stereoselective direct aldol reaction of 4-formylcoumarins with acetone catalyzed by L-proline in water–acetone mixtures. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1205197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | | | - Lokesh A. Shastri
- Department of Chemistry, Karnatak University, Dharwad, Karnataka, India
| | - Vinay A. Sunagar
- Department of Chemistry, G.S.S. College, Belagavi, Karnataka, India
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24
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Liu Y, Yang Y, Jiang Y. AgBF 4catalyzed regio- and stereoselective synthesis of transα-vinyl-β-amino esters via asymmetric addition of siyl dienolate to sulfinylimines. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1136308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Yingle Liu
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Huixing Lu, Zigong, Sichuan, China
| | - Yi Yang
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Huixing Lu, Zigong, Sichuan, China
| | - Yan Jiang
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Huixing Lu, Zigong, Sichuan, China
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25
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Li JL, Yang KC, Li Y, Li Q, Zhu HP, Han B, Peng C, Zhi YG, Gou XJ. Asymmetric synthesis of bicyclic dihydropyrans via organocatalytic inverse-electron-demand oxo-Diels–Alder reactions of enolizable aliphatic aldehydes. Chem Commun (Camb) 2016; 52:10617-20. [DOI: 10.1039/c6cc05001h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An unprecedented highly enantioselective amine catalyzed oxo-IEDDA reaction of cyclic enones with enolizable aldehydes including aqueous acetaldehyde has been developed.
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Affiliation(s)
- Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Yi Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Qiang Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Hong-Ping Zhu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Yong-Gang Zhi
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Xiao-Jun Gou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
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26
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Kim SM, Kim YS, Kim DW, Rios R, Yang JW. Acetaldehyde: A Small Organic Molecule with Big Impact on Organocatalytic Reactions. Chemistry 2015; 22:2214-34. [PMID: 26667963 DOI: 10.1002/chem.201503960] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Indexed: 11/11/2022]
Abstract
Stereocontrolled formation of carbon-carbon and carbon-heteroatom bonds through asymmetric organocatalysis is a formidable challenge for modern synthetic chemistry. Among the most significant contributions to this field are the transformations involving the use of acetaldehyde or α-heteroatom-substituted acetaldehydes for constructing valuable synthons (e.g., amino acid derivatives and hydroxycarbonyl). In this Minireview, versatile (enantioselective) organocatalytic transformations are discussed.
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Affiliation(s)
- Sun Min Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Young Sug Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Dong Wan Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Ramon Rios
- Faculty of Natural and Environmental Science, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK.
| | - Jung Woon Yang
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea.
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27
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28
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Zhang Y, Zhu J, Yu N, Yu H. Highly Enantioselective Direct Asymmetric Aldol Reaction Catalyzed by 4,5-Methano-L-proline. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400732] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Umezawa T, Sato A, Ameda Y, Casalme LO, Matsuda F. Synthetic study on dolastatin 16: concise and scalable synthesis of two unusual amino acid units. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Kano T, Maruyama H, Sakamoto R, Maruoka K. Regioselectivity switch in chiral amine-catalysed asymmetric addition of aldehydes to reactive enals. Chem Commun (Camb) 2015; 51:10062-5. [DOI: 10.1039/c5cc02438b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A regioselectivity switch was realized in the chiral amine-catalysed asymmetric addition of aldehydes to reactive enals, and either aldol adducts or conjugate adducts were obtained in a stereoselective fashion.
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Affiliation(s)
- Taichi Kano
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Hiroki Maruyama
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Ryu Sakamoto
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Keiji Maruoka
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
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31
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Kumar M, Kumar A, Rizvi MA, Shah BA. Acetaldehyde in asymmetric organocatalytic transformations. RSC Adv 2015. [DOI: 10.1039/c5ra05695k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review summarize both the recent developments in the organocatalysed use of acetaldehyde as a substrate in various organic transformations and its application in the synthesis of bioactive molecules.
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Affiliation(s)
- Manjeet Kumar
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | - Arvind Kumar
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | | | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
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32
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Yasui Y, Ogata K, Sato I, Hayashi Y. Asymmetric Aldol Reaction of α-Acetoxyimino Aldehydes and its Application in the Synthesis of Substituted 1,2-Oxazine Derivatives. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Ren YY, Wang YQ, Liu S, Pan K. Organocatalysed Asymmetric Direct Mannich Reaction of Acetophenone Derivatives and Dibenzo[b,f][1,4]oxazepines with Azetidine-2-carboxylic Acid. ChemCatChem 2014. [DOI: 10.1002/cctc.201402446] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Jin Y, Chen D, Zhang XR. Direct Asymmetric anti
-Mannich-Type Reactions Catalyzed by Cinchona
Alkaloid Derivatives. Chirality 2014; 26:801-5. [DOI: 10.1002/chir.22358] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 06/02/2014] [Accepted: 06/13/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Ying Jin
- Department of Pharmacy; Jilin Medical College; Jilin China
| | - Di Chen
- Department of Pharmacy; Wenzhou Medical University; Wenzhou Zhejiang China
| | - Xiu Rong Zhang
- Department of Pharmacy; Jilin Medical College; Jilin China
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35
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Terada M, Komuro T, Toda Y, Korenaga T. Mechanistic Studies of Highly Enantio- and Diastereoselective Aza-Petasis–Ferrier Rearrangement Catalyzed by Chiral Phosphoric Acid. J Am Chem Soc 2014; 136:7044-57. [DOI: 10.1021/ja5017206] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Masahiro Terada
- Department
of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
- Research
and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Takazumi Komuro
- Department
of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Yasunori Toda
- Department
of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Toshinobu Korenaga
- Department
of Chemistry and Bioengineering, Graduate School of Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate-ken 020-8551, Japan
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36
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Kano T, Takeda M, Sakamoto R, Maruoka K. Synthesis of 3-Mono-Substituted Binaphthyl-Based Secondary Amine Catalysts via Monobromination of an Axially Chiral Dicarboxylic Acid Derivative. J Org Chem 2014; 79:4240-4. [DOI: 10.1021/jo500637q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taichi Kano
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Momotaro Takeda
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryu Sakamoto
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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37
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Kano T, Sakamoto R, Maruoka K. Amine-Catalyzed Asymmetric Cross-Aldol Reactions Using Heterofunctionalized Acetaldehydes as Nucleophiles. Org Lett 2014; 16:944-7. [DOI: 10.1021/ol4036837] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taichi Kano
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryu Sakamoto
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department
of Chemistry,
Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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38
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Kano T, Sakamoto R, Maruoka K. Remote chirality control based on the organocatalytic asymmetric Mannich reaction of α-thio acetaldehydes. Chem Commun (Camb) 2014; 50:942-4. [DOI: 10.1039/c3cc47827k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Yanagisawa A, Lin Y, Miyake R, Yoshida K. Catalytic Enantioselective Mannich-Type Reaction via a Chiral Silver Enolate. Org Lett 2013; 16:86-9. [DOI: 10.1021/ol403075u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akira Yanagisawa
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Yuqin Lin
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Ryoji Miyake
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
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40
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Davis LO. Recent Developments in the Synthesis and Applications of Pyrazolidines. A Review. ORG PREP PROCED INT 2013. [DOI: 10.1080/00304948.2013.834769] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Chen S, Hao L, Zhang Y, Tiwari B, Chi YR. Asymmetric Access to the Smallest Enolate Intermediate via Organocatalytic Activation of Acetic Ester. Org Lett 2013; 15:5822-5. [DOI: 10.1021/ol402877n] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shaojin Chen
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Lin Hao
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yuexia Zhang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Bhoopendra Tiwari
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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42
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Nagata K, Kuga Y, Higashi A, Kinoshita A, Kanemitsu T, Miyazaki M, Itoh T. Asymmetric Synthesis and Catalytic Activity of 3-Methyl-β-proline in Enantioselective anti-Mannich-type Reactions. J Org Chem 2013; 78:7131-6. [DOI: 10.1021/jo4010316] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuhiro Nagata
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Yasushi Kuga
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Akinori Higashi
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Atsushi Kinoshita
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Takuya Kanemitsu
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Michiko Miyazaki
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
| | - Takashi Itoh
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo
142-8555, Japan
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43
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Fan X, Rodríguez-Escrich C, Sayalero S, Pericàs MA. Paraldehyde as an Acetaldehyde Precursor in Asymmetric Michael Reactions Promoted by Site-Isolated Incompatible Catalysts. Chemistry 2013; 19:10814-7. [DOI: 10.1002/chem.201302087] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Indexed: 11/10/2022]
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44
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Deng YH, Chen JQ, He L, Kang TR, Liu QZ, Luo SW, Yuan WC. Highly Enantioselective Aldol Reactions between Acetaldehyde and Activated Acyclic Ketones Catalyzed by Chiral Primary Amines. Chemistry 2013; 19:7143-50. [DOI: 10.1002/chem.201300478] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Indexed: 11/08/2022]
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45
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Morana F, Basso A, Riva R, Rocca V, Banfi L. Thehomo-PADAM Protocol: Stereoselective and Operationally Simple Synthesis of α-Oxo- or α-Hydroxy-γ-acylaminoamides and Chromanes. Chemistry 2013; 19:4563-9. [DOI: 10.1002/chem.201300023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Indexed: 11/11/2022]
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46
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Kano T, Maruoka K. Unique properties of chiral biaryl-based secondary aminecatalysts for asymmetric enamine catalysis. Chem Sci 2013. [DOI: 10.1039/c2sc21612d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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47
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48
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Kano T, Sakamoto R, Yamaguchi Y, Itoh KI, Maruoka K. One-pot cross double-Mannich reaction of acetaldehyde catalyzed by a binaphthyl-based amino sulfonamide. Chem Commun (Camb) 2013; 49:1118-20. [DOI: 10.1039/c2cc38370e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Kim SM, Yang JW. Organocatalytic asymmetric synthesis of β3-amino acid derivatives. Org Biomol Chem 2013; 11:4737-49. [DOI: 10.1039/c3ob40917a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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Rueping M, Maji MS, Küçük HB, Atodiresei I. Asymmetrische Brønsted-Säure-katalysierte Cycloadditionen - effiziente enantioselektive Synthese von Pyrazolidinen, Pyrazolinen und 1,3-Diaminen ausN-Acylhydrazonen und Alkenen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205813] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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