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Catalytic Efficiency of Primary α-Amino Amides as Multifunctional Organocatalysts in Recent Asymmetric Organic Transformations. Catalysts 2022. [DOI: 10.3390/catal12121674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Chiral primary α-amino amides, consisting of an adjacent enamine bonding site (Bronsted base site), a hydrogen bonding site (Bronsted acid site), and flexible bulky substituent groups to modify the steric factor, are proving to be extremely valuable bifunctional organocatalysts for a wide range of asymmetric organic transformations. Primary α-amino amides are less expensive alternatives to other primary amino organocatalysts, such as chiral diamines and cinchona-alkaloid-derived primary amines, as they are easy to synthesize, air-stable, and allow for the incorporation of a variety of functional groups. In recent years, we have demonstrated the catalytic use of simple primary α-amino amides and their derivatives as organocatalysts for the aldol reaction, Strecker reaction, Michael tandem reaction, allylation of aldehydes, reduction of N-Aryl mines, opening of epoxides, hydrosilylation, asymmetric hydrogen transfer, and N-specific nitrosobenzene reaction with aldehydes.
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Nugent TC, Vos AE, Hussain I, El Damrany Hussein HA, Goswami F. A 2000 to 2020 Practitioner's Guide to Chiral Amine‐Based Enantioselective Aldol Reactions: Ketone Substrates, Best Methods, in Water Reaction Environments, and Defining Nuances. European J Org Chem 2022. [DOI: 10.1002/ejoc.202100529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Thomas C. Nugent
- Department of Life Sciences and Chemistry Jacobs University Bremen 28759 Bremen Germany
| | - Alice E. Vos
- Department of Life Sciences and Chemistry Jacobs University Bremen 28759 Bremen Germany
| | - Ishtiaq Hussain
- Department of Pharmacy Abbottabad University of Science and Technology Havelian Abbottabad 22010 Pakistan
| | | | - Falguni Goswami
- Department of Life Sciences and Chemistry Jacobs University Bremen 28759 Bremen Germany
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Thiyagarajan R, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M, Nakano H. New small γ-turn type N-primary amino terminal tripeptide organocatalyst for solvent-free asymmetric aldol reaction of various ketones with aldehydes. RSC Adv 2021; 11:38925-38932. [PMID: 35493209 PMCID: PMC9044195 DOI: 10.1039/d1ra08635a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 01/18/2023] Open
Abstract
New small γ-turn type N-primary amino terminal tripeptides were synthesized and their functionality as an organocatalyst was examined in the asymmetric aldol reaction of various ketones with different aromatic aldehydes under solvent-free neat conditions to afford the desired chiral anti-aldol products in good to excellent chemical yields, diastereoselectivities and enantioselectivities (up to 99%, up to syn : anti/13 : 87 dr, up to 99% ee). New small γ-turn type N-primary amino terminal tripeptides were applied for the asymmetric aldol reaction of ketones with aldehydes under neat conditions to afford the chiral aldol products (up to 99%, up to syn : anti/13 : 87 dr, up to 99% ee).![]()
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Affiliation(s)
- Rajkumar Thiyagarajan
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Zubeda Begum
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Sciences,Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Michio Tokiwa
- Tokiwakai Group, 62 Numajiri Tsuduri-Chou Uchigo, Iwaki 973-8053, Japan
| | - Suguru Tokiwa
- Tokiwakai Group, 62 Numajiri Tsuduri-Chou Uchigo, Iwaki 973-8053, Japan
| | | | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
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Huelgas G, Somanathan R, Hernández Pérez JM, Rojas Cabrera H, de la Higuera Macías M, Domínguez-Huerta A, Sabala R, Anaya de Parrodi C. Homochiral bifunctional L-prolinamide- and L-bis-prolinamide-catalyzed asymmetric aldol reactions performed in wet solvent-free conditions. Chirality 2020; 33:22-36. [PMID: 33232537 DOI: 10.1002/chir.23283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/25/2020] [Accepted: 10/05/2020] [Indexed: 01/20/2023]
Abstract
In this study, the novel bifunctional homochiral thiourea-L-prolinamides 1-4, tertiary amino-L-prolinamide 5, and bis-L-prolinamides 6 and 7 were prepared from enantiomerically pure (11R,12R)-11,12-diamino-9,10-dihydro-9,10-ethanoanthracene 8 and (11S,12S)-11,12-diamino-9,10-dihydro-9,10-ethanoanthracene ent-8. Highly enantioselective and diastereoselective aldolic intermolecular reactions (up to 95% enantiomeric excess, 93:7 anti/syn) between aliphatic ketones (20 equiv) and a range of aromatic aldehydes (1 equiv) were successfully carried out in the presence of water (10 equiv) and monochloroacetic acid (10 mol%), solvent-free conditions, at room temperature over 24 h using organocatalysts 1-7 (5 mol%). Stereoselective induction using density functional theory-based methods was consistent with the experimental data.
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Affiliation(s)
- Gabriela Huelgas
- Departamento de Ciencias Químico Biológicas, Universidad de las Americas Puebla, Cholula, Puebla, Mexico
| | - Ratnasamy Somanathan
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Tijuana, Baja California, Mexico
| | | | - Haydee Rojas Cabrera
- Departamento de Ciencias Químico Biológicas, Universidad de las Americas Puebla, Cholula, Puebla, Mexico
| | | | - Alejandra Domínguez-Huerta
- Departamento de Ciencias Químico Biológicas, Universidad de las Americas Puebla, Cholula, Puebla, Mexico
| | - Rocío Sabala
- Departamento de Ciencias Químico Biológicas, Universidad de las Americas Puebla, Cholula, Puebla, Mexico
| | - Cecilia Anaya de Parrodi
- Departamento de Ciencias Químico Biológicas, Universidad de las Americas Puebla, Cholula, Puebla, Mexico
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Recent advances in reactions promoted by amino acids and oligopeptides. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
During the last 20 years, Organocatalysis has become one of the major fields of Catalysis. Herein, we provide a recent overview on reactions where the use of amino acids and peptides as the organocatalysts was employed. All aspects regarding aldol reactions, Michael reactions, epoxidation, Henry reactions and many others that are crucial for the reaction conditions and reaction mechanisms are discussed.
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Owolabi IA, Chennapuram M, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Takeshita M, Nakano H. Amino Amide Organocatalysts for Asymmetric Michael Addition of β-Keto Esters with β-Nitroolefins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Isiaka Alade Owolabi
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Madhu Chennapuram
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Michio Tokiwa
- Tokiwakai Group, 62 Numajiri, Tsuduri-chou, Uchigo, Iwaki, Fukushima 973-8053, Japan
| | - Mitsuhiro Takeshita
- Tokiwakai Group, 62 Numajiri, Tsuduri-chou, Uchigo, Iwaki, Fukushima 973-8053, Japan
| | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
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Nakano H, Ganesan D, Chennapuram M, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M. Sugar Based γ-Amino Alcohol Organocatalyst for Asymmetric Michael Addition of β-Keto Esters with Nitroolefins. HETEROCYCLES 2019. [DOI: 10.3987/com-19-14172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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