1
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Chao YH, Jamwal P, Ananda Rao G, Gurubrahamam R, Chen K. Chiral Spirophosphoric-Acid-Catalyzed Divergent Vinylogous Mannich and aza-Friedel-Crafts Reactions of 2-Methoxyfuran. Org Lett 2024; 26:4938-4944. [PMID: 38838351 DOI: 10.1021/acs.orglett.4c01458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
The first enantioselective vinylogous Mannich reaction is developed using 2-methoxyfuran under chiral spirophosphoric acid catalysis. The strategy involves 4-isoxazoline derivatives as cyclic ketimine surrogates and provides γ-butenolide scaffolds (up to 97% ee and >20:1 dr). The mechanistic investigations suggest that an in situ generated water molecule plays a crucial role in delivering γ-butenolide, while the use of molecular sieves delivers aza-Friedel-Crafts products. The synthetic utility of γ-butenolide is shown toward obtaining piperidone skeleton via a lactone-lactam rearrangement.
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Affiliation(s)
- Yi-Han Chao
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 11677
| | - Paru Jamwal
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, Jammu and Kashmir 181221, India
| | - Gunda Ananda Rao
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 11677
| | - Ramani Gurubrahamam
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, Jammu and Kashmir 181221, India
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 11677
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2
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Luo LS, Hou SM, Lu J, Zhang Q, Sha F, Wu XY. Cu-Catalyzed Direct Enantioselective Vinylogous Mannich Reaction between β,γ-Unsaturated Pyrazoleamides and Ketimines. J Org Chem 2024; 89:2582-2587. [PMID: 38284164 DOI: 10.1021/acs.joc.3c02602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
A catalytic asymmetric vinylogous Mannich-type reaction between β,γ-unsaturated amides and ketimines has been developed in excellent regio-, diastereo-, and enantioselectivities. The methodology provides an efficient approach to construct chiral homoallylic amines with a 3-amino-2-oxindole scaffold. Moreover, the transformations of the chiral products, including the removal of the pyrazole group or Boc group, the reduction of the C-C double bond, and Suzuki coupling, have been investigated.
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Affiliation(s)
- Ling-Shan Luo
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Si-Meng Hou
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jian Lu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Feng Sha
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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3
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Nakamura S, Kibe M, Takehara T, Suzuki T. Direct Catalytic Enantioselective Reaction of α-Isocyanoacetonitriles with Ketimines Using Cinchona Alkaloid Amide-Cu(II) Catalysts. Org Lett 2023; 25:1040-1044. [PMID: 36749377 DOI: 10.1021/acs.orglett.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The first enantioselective reaction of α-isocyanoacetonitriles was developed. The reaction of various α-isocyanoacetonitriles with ketimines using cinchona alkaloid amide-Cu(II) catalysts afforded imidazolines with consecutive tetrasubstituted stereogenic carbon centers in good yields and high diastereo- and enantioselectivities. The stereoselectivity of the reaction is explained on the basis of the control experiment and density functional theory (DFT) calculations. The products were subsequently converted into chiral compounds. This process highlights the possible use of α-isocyanoacetonitriles for asymmetric and organic syntheses.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Masato Kibe
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsunayoshi Takehara
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Takeyuki Suzuki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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4
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Deng Y, Shi X, Shi G, Lu X, Luo J, Deng L. One-Step Asymmetric Construction of 1,4-Stereocenters via Tandem Mannich-Isomerization Reactions Mediated by a Dual-Functional Betaine Catalyst. JACS AU 2022; 2:2678-2685. [PMID: 36590254 PMCID: PMC9795573 DOI: 10.1021/jacsau.2c00465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/17/2023]
Abstract
The construction of chiral motifs containing nonadjacent stereocenters stands out as a major challenge as they are usually constructed in separate steps utilizing different chiral catalysts. Therefore, the development of new strategies to streamline the construction of such complex motifs has become a major focus of asymmetric synthesis. We report here an unprecedented asymmetric tandem Mannich-isomerization reaction that allows the direct construction of 1,4-stereocenters in a highly stereoselective manner. This asymmetric transformation demonstrated the potential of a tandem nucleophilic addition-isomerization reaction as a broadly useful strategy for the efficient construction of 1,4-stereocenters. Notably, this tandem reaction was mediated by a single chiral betaine as a dual-functional catalyst, promoting first an enantioselective intermolecular C-C bond forming reaction and next a stereoselective intramolecular 1,3-proton transfer reaction.
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Affiliation(s)
- Yu Deng
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, Department of Chemistry, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
- Department
of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110, United States
| | - Xiaohuo Shi
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, School of Science, Instrumentation and Service Center for
Molecular Sciences, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Guangfa Shi
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, Department of Chemistry, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Xingyu Lu
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, School of Science, Instrumentation and Service Center for
Molecular Sciences, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Jisheng Luo
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, Department of Chemistry, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Li Deng
- Key
Laboratory of Precise Synthesis of Functional Molecules of Zhejiang
Province, Department of Chemistry, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
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5
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Chen IT, Guan RY, Han JL. Asymmetric Sequential Vinylogous Mannich/annulation/acylation Process of 2‐Ethylidene 1,3‐indandiones and Isatin N‐Boc ketimines: Access to Chiral Spiro‐oxindole Piperidine Derivatives. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200465] [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]
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6
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Ogura K, Takehara T, Suzuki T, Nakamura S. Enantioselective Vinylogous Mannich Reaction of Acyclic Vinylketene Silyl Acetals with Acyclic Ketimines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100872] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kazuki Ogura
- Department of Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology, Gokiso, Showa-ku Nagoya 466-8555 Japan
| | - Tsunayoshi Takehara
- The Institute of Scientific and Industrial Research Osaka University 8-1 Mihogaoka Ibaraki-shi Osaka 567-0047 Japan
| | - Takeyuki Suzuki
- The Institute of Scientific and Industrial Research Osaka University 8-1 Mihogaoka Ibaraki-shi Osaka 567-0047 Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology, Gokiso, Showa-ku Nagoya 466-8555 Japan
- Frontier Research Institute for Material Science Nagoya Institute of Technology, Gokiso, Showa-ku Nagoya 466-8555 Japan
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7
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8
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Xu C, Reep C, Jarvis J, Naumann B, Captain B, Takenaka N. Asymmetric Catalytic Ketimine Mannich Reactions and Related Transformations. Catalysts 2021; 11:712. [PMID: 34745653 PMCID: PMC8570560 DOI: 10.3390/catal11060712] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The catalytic enantioselective ketimine Mannich and its related reactions provide direct access to chiral building blocks bearing an α-tertiary amine stereogenic center, a ubiquitous structural motif in nature. Although ketimines are often viewed as challenging electrophiles, various approaches/strategies to circumvent or overcome the adverse properties of ketimines have been developed for these transformations. This review showcases the selected examples that highlight the benefits and utilities of various ketimines and remaining challenges associated with them in the context of Mannich, allylation, and aza-Morita-Baylis-Hillman reactions as well as their variants.
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Affiliation(s)
- Changgong Xu
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6975, USA
| | - Carlyn Reep
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6975, USA
| | - Jamielyn Jarvis
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6975, USA
| | - Brandon Naumann
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6975, USA
| | - Burjor Captain
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
| | - Norito Takenaka
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6975, USA
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9
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Lupidi G, Palmieri A, Petrini M. Enantioselective Catalyzed Synthesis of Amino Derivatives Using Electrophilic Open‐Chain
N
‐Activated Ketimines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100292] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gabriele Lupidi
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
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10
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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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11
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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
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12
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Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
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Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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13
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Trost BM, Hung C(J, Mata G. Zweikernige Metall‐ProPhenol‐Katalysatoren: Entwicklung und Anwendungen in der Synthese. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201909692] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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14
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Nakamura S, Matsuzaka K, Hatanaka T, Funahashi Y. Enantioselective Vinylogous Mannich Reaction of Acyclic Vinylketene Silyl Acetals with Ketimines Using Chiral Bis(imidazoline)–Cu(II) Catalysts. Org Lett 2020; 22:2868-2872. [DOI: 10.1021/acs.orglett.0c00289] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
- Frontier Research Institute for Material Science, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Koichi Matsuzaka
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsubasa Hatanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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15
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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.
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Affiliation(s)
| | - Santanu Mukherjee
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
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16
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Trost BM, Hung C(J, Mata G. Dinuclear Metal‐ProPhenol Catalysts: Development and Synthetic Applications. Angew Chem Int Ed Engl 2019; 59:4240-4261. [DOI: 10.1002/anie.201909692] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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17
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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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18
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Trost BM, Hung C(J, Scharf MJ. Direct Catalytic Asymmetric Vinylogous Additions of α,β‐ and β,γ‐Butenolides to Polyfluorinated Alkynyl Ketimines. Angew Chem Int Ed Engl 2018; 57:11408-11412. [DOI: 10.1002/anie.201806249] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | | | - Manuel J. Scharf
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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19
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Trost BM, Hung C(J, Scharf MJ. Direct Catalytic Asymmetric Vinylogous Additions of α,β‐ and β,γ‐Butenolides to Polyfluorinated Alkynyl Ketimines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806249] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | | | - Manuel J. Scharf
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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20
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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
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21
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Nakamura S, Hayama D, Miura M, Hatanaka T, Funahashi Y. Catalytic Enantioselective Reaction of 2H-Azirines with Thiols Using Cinchona Alkaloid Sulfonamide Catalysts. Org Lett 2018; 20:856-859. [DOI: 10.1021/acs.orglett.7b04022] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuichi Nakamura
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
- Frontier
Research Institute for Material Science, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Daiki Hayama
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Masataka Miura
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsubasa Hatanaka
- Department
of Chemistry, Graduate School of Science, Osaka University 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiro Funahashi
- Department
of Chemistry, Graduate School of Science, Osaka University 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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22
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Nakamura S, Furukawa T, Hatanaka T, Funahashi Y. Enantioselective aza-Friedel–Crafts reaction of cyclic ketimines with indoles using chiral imidazoline–phosphoric acid catalysts. Chem Commun (Camb) 2018; 54:3811-3814. [DOI: 10.1039/c8cc00594j] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A highly enantioselective aza-Friedel Crafts reaction of cyclic 4-aryl-3-oxo-1,2,5-thiadiazol-1,1-oxides as cyclic ketimines with indoles was developed.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
- Showa-ku
- Japan
- Frontier Research Institute for Material Science, Nagoya Institute of Technology
- Showa-ku
| | - Takashi Furukawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
- Showa-ku
- Japan
| | - Tsubasa Hatanaka
- Department of Chemistry, Graduate School of Science, Osaka University
- Toyonaka
- Japan
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University
- Toyonaka
- Japan
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23
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Wang ZH, You Y, Chen YZ, Xu XY, Yuan WC. An asymmetric organocatalytic vinylogous Mannich reaction of 3-methyl-5-arylfuran-2(3H)-ones with N-(2-pyridinesulfonyl) imines: enantioselective synthesis of δ-amino γ,γ-disubstituted butenolides. Org Biomol Chem 2018; 16:1636-1640. [DOI: 10.1039/c7ob03117c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of δ-amino γ,γ-disubstituted butenolides were obtained with satisfactory results via an asymmetric vinylogous Mannich reaction of 3-methyl-5-arylfuran-2(3H)-ones with N-(2-pyridinesulfonyl)imines.
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Affiliation(s)
- Zhen-Hua Wang
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- China
| | - Yong You
- Institute for Advanced Study
- Chengdu University
- Chengdu 610106
- 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
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24
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Trost BM, Gnanamani E, Tracy JS, Kalnmals CA. Zn-ProPhenol Catalyzed Enantio- and Diastereoselective Direct Vinylogous Mannich Reactions between α,β- and β,γ-Butenolides and Aldimines. J Am Chem Soc 2017; 139:18198-18201. [PMID: 29198100 DOI: 10.1021/jacs.7b11361] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a Zn-ProPhenol catalyzed reaction between butenolides and imines to obtain tetrasubstituted vinylogous Mannich products in good yield and diastereoselectivity with excellent enantioselectivity (97 to >99.5% ee). Notably, both α,β- and β,γ-butenolides can be utilized as nucleophiles in this transformation. The imine partner bears the synthetically versatile N-Cbz group, avoiding the use of the specialized aryl directing groups previously required in related work. Additionally, the reaction can be performed on gram scale with reduced catalyst loading as low as 2 mol %. The functional group-rich products can be further elaborated using a variety of methods.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Elumalai Gnanamani
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Jacob S Tracy
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Christopher A Kalnmals
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
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25
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Hajra S, Bhosale SS, Hazra A. An asymmetric acetate-Mannich reaction of chiral isatin derived ketimines and its applications. Org Biomol Chem 2017; 15:9217-9225. [PMID: 29082414 DOI: 10.1039/c7ob02407j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient TMSOTf-mediated asymmetric acetate-Mannich reaction of isatin derived tert-butylsulfinyl ketimines and S-phenyl thioacetate was developed to afford the direct synthesis of indole-based β3,3-amino acid thioester with excellent selectivity (dr > 98 : 2). Syntheses of (+)-AG-041R and 3-aminopyrroloindoline have been accomplished utilizing the developed method.
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Affiliation(s)
- Saumen Hajra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
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26
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Wu LL, Zeng QQ, Yang YX, Hu HF, Guan Z, He YH. Earthworm extract as a biocatalyst for asymmetric Mannich addition of cyclic ketimine 3-aryl-2H-1,4-benzoxazines. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1349116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ling-Ling Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Qing-Qing Zeng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Ya-Xuan Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Hong-Feng Hu
- School of Life Science, Southwest University, Chongqing, PR China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
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27
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Nakamura S, Hayama D. Enantioselective Reaction of 2H-Azirines with Phosphite Using Chiral Bis(imidazoline)/Zinc(II) Catalysts. Angew Chem Int Ed Engl 2017; 56:8785-8789. [PMID: 28557241 DOI: 10.1002/anie.201704133] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 05/23/2017] [Indexed: 01/15/2023]
Abstract
The first highly enantioselective nucleophilic addition reaction of phosphites with 2H-azirines has been developed. The reaction was applied to various 3-substituted 2H-azirines using novel chiral bis(imidazoline)/ZnII catalysts to afford products in good yield with high enantioselectivity. The transformation of the obtained optically active aziridines showed that 2H-azirines act as either α,β- or β,β-dicarbocationic amine synthons.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan.,Frontier Research Institute for Material Science, Nagoya Institute of Technology, Showa-ku, Nagoya, 466-8555, Japan
| | - Daiki Hayama
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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28
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Nakamura S, Hayama D. Enantioselective Reaction of 2H
-Azirines with Phosphite Using Chiral Bis(imidazoline)/Zinc(II) Catalysts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso, Showa-ku Nagoya 466-8555 Japan
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Showa-ku; Nagoya 466-8555 Japan
| | - Daiki Hayama
- Department of Life Science and Applied Chemistry; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso, Showa-ku Nagoya 466-8555 Japan
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29
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Zhang HJ, Shi CY, Zhong F, Yin L. Direct Asymmetric Vinylogous and Bisvinylogous Mannich-Type Reaction Catalyzed by a Copper(I) Complex. J Am Chem Soc 2017; 139:2196-2199. [DOI: 10.1021/jacs.6b13042] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai-Jun Zhang
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chang-Yun Shi
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Feng Zhong
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Liang Yin
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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30
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Shiomi N, Kuroda M, Nakamura S. Desymmetrization of aziridine with malononitrile using cinchona alkaloid amide/zinc(ii) catalysts. Chem Commun (Camb) 2017; 53:1817-1820. [DOI: 10.1039/c6cc09457k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The catalytic enantioselective desymmetrization of aziridines with malononitrile has been developed.
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Affiliation(s)
- Noriyuki Shiomi
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Showa-ku
- Japan
| | - Mami Kuroda
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Showa-ku
- Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Showa-ku
- Japan
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31
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Shiomi N, Yamamoto K, Nagasaki K, Hatanaka T, Funahashi Y, Nakamura S. Enantioselective Oxidative Ring-Opening Reaction of Aziridines with α-Nitroesters Using Cinchona Alkaloid Amide/Nickel(II) Catalysts. Org Lett 2016; 19:74-77. [DOI: 10.1021/acs.orglett.6b03346] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noriyuki Shiomi
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
- Frontier
Research Institute for Material Science, Nagoya Institute of Technology, Gokiso,
Showa-ku, Nagoya 466-8555, Japan
| | - Keisuke Yamamoto
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Kazuma Nagasaki
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsubasa Hatanaka
- Department
of Chemistry, Graduate School of Science, Osaka University 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiro Funahashi
- Department
of Chemistry, Graduate School of Science, Osaka University 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shuichi Nakamura
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
- Frontier
Research Institute for Material Science, Nagoya Institute of Technology, Gokiso,
Showa-ku, Nagoya 466-8555, Japan
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32
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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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33
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Nakamura S, Matsuda N, Ohara M. Organocatalytic Enantioselective Aza-Friedel-Crafts Reaction of Cyclic Ketimines with Pyrroles using Imidazolinephosphoric Acid Catalysts. Chemistry 2016; 22:9478-82. [DOI: 10.1002/chem.201601573] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shuichi Nakamura
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
| | - Nazumi Matsuda
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
| | - Mutsuyo Ohara
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
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34
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Lin S, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-type Reaction of α,β-Unsaturated γ-Butyrolactam with Ketimines. Chemistry 2016; 22:3296-3299. [DOI: 10.1002/chem.201600034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shaoquan Lin
- Institute of Microbial Chemistry (BIKAKEN), Tokyo; 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo; 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo; 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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35
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Zhu Y, Li Y, Meng Q, Li X. An organocatalytic enantioselective vinylogous Mannich reaction of α,α-dicyanoolefins with isatin N-Boc ketimines. Org Chem Front 2016. [DOI: 10.1039/c6qo00038j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The first catalytic enantioselective vinylogous Mannich reaction of α,α-dicyanoolefins with ketimines derived from isatins has been developed. High yields and enantioselectivities were observed for the reaction of various ketimines and α,α-dicyanoolefins using a tertiary butyl substituted cinchona alkaloid type squaramide catalyst.
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Affiliation(s)
- Yi Zhu
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
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36
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Rainoldi G, Sacchetti A, Silvani A, Lesma G. Organocatalytic vinylogous Mannich reaction of trimethylsiloxyfuran with isatin-derived benzhydryl-ketimines. Org Biomol Chem 2016; 14:7768-76. [DOI: 10.1039/c6ob01359g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report the synthesis of chiral quaternary 3-aminooxindole butenolides by BINOL-derived phosphoric acid-catalyzed addition of trimethylsiloxyfuran to isatin-derived ketimines.
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Affiliation(s)
- Giulia Rainoldi
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - Alessandro Sacchetti
- Dipartimento di Chimica
- Materiali ed Ing. Chimica ‘Giulio Natta’
- Politecnico di Milano
- Milano
- Italy
| | | | - Giordano Lesma
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
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37
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de la Campa R, Gammack Yamagata AD, Ortín I, Franchino A, Thompson AL, Odell B, Dixon DJ. Catalytic enantio- and diastereoselective Mannich reaction of α-substituted isocyanoacetates and ketimines. Chem Commun (Camb) 2016; 52:10632-5. [DOI: 10.1039/c6cc04132a] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highly diastereo- and enantioselective Mannich reaction/cyclisation of α-substituted isocyanoacetates and ketimines catalysed by silver acetate and a cinchona-derived amino phosphine is reported.
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Affiliation(s)
- Raquel de la Campa
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | | | - Irene Ortín
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Allegra Franchino
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Amber L. Thompson
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Barbara Odell
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Darren J. Dixon
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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38
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Nakamura S, Yamaji R, Iwanaga M. Enantioselective construction of imidazolines having vicinal tetra-substituted stereocenters by direct Mannich reaction of α-substituted α-isocyanoacetates with ketimines. Chem Commun (Camb) 2016; 52:7462-5. [DOI: 10.1039/c6cc02911f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective direct Mannich-type reaction of ketimines with α-substituted α-isocyanoacetates gave imidazolines having vicinal tetra-substituted stereocenters with high stereoselectivity.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Ryota Yamaji
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Masaru Iwanaga
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
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39
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Kang TC, Zhao X, Sha F, Wu XY. Highly enantioselective direct allylic alkylation of butenolides with Morita–Baylis–Hillman carbonates catalyzed by chiral squaramide-phosphine. RSC Adv 2015. [DOI: 10.1039/c5ra14667d] [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] Open
Abstract
Asymmetric vinylogous allylic alkylation of β,γ-butenolides with Morita–Baylis–Hillman carbonates has been developed to construct γ,γ-disubstituted butenolides containing adjacent quaternary and tertiary chiral centers.
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Affiliation(s)
- Tian-Chen Kang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xuan Zhao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Feng Sha
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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40
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Phae-nok S, Kuhakarn C, Pohmakotr M, Reutrakul V, Soorukram D. Convenient synthesis of α,β-unsaturated γ-butyrolactones and γ-butyrolactams via decarboxylative iodination of paraconic acids and β-carboxyl-γ-butyrolactams using 1,3-diiodo-5,5-dimethylhydantoin. Org Biomol Chem 2015; 13:11087-95. [DOI: 10.1039/c5ob01574j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient synthetic approach to α,β-unsaturated γ-butyrolactones and γ-butyrolactams is reported.
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Affiliation(s)
- Supasorn Phae-nok
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Manat Pohmakotr
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
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