1
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Babkova M, Wilhelm R. On the Influence of a Camphor‐based 1,3‐Diamine Fragment in a Proline‐Based Organocatalyst. ChemistrySelect 2022. [DOI: 10.1002/slct.202201313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mariia Babkova
- Institute of Organic Chemistry Clausthal University of Technology Leibnizstr. 6 38678 Clausthal-Zellerfeld Germany
| | - Rene Wilhelm
- Institute of Organic Chemistry Clausthal University of Technology Leibnizstr. 6 38678 Clausthal-Zellerfeld Germany
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2
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Cmelova P, Sramel P, Zahradnikova B, Modrocka V, Szabados H, Meciarova M, Sebesta R. Pro‐Pro Dipeptide‐Thiourea Organocatalyst in the Mannich Reaction Between α‐Imino Esters and Pyruvates. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Patricia Cmelova
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Peter Sramel
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Barbora Zahradnikova
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Viktoria Modrocka
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Henrich Szabados
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Maria Meciarova
- Comenius University in Bratislava Faculty of Natural Sciences: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry SLOVAKIA
| | - Radovan Sebesta
- Comenius University FNS: Univerzita Komenskeho v Bratislave Prirodovedecka fakulta Organic chemistry Mlynska dolina, Ilkovicova 6 84215 Bratislava SLOVAKIA
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3
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Valapil DG, Kadagathur M, Shankaraiah N. Stereoselective Aldol and Conjugate Addition Reactions Mediated by Proline‐Based Catalysts and Its Analogues: A Concise Review. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Durgesh Gurukkala Valapil
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Manasa Kadagathur
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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4
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Juaristi E. Recent developments in next generation (S)-proline-derived chiral organocatalysts. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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5
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Mahato CK, Mukherjee S, Kundu M, Vallapure VP, Pramanik A. Asymmetric 1,4-Michael Addition in Aqueous Medium Using Hydrophobic Chiral Organocatalysts. J Org Chem 2021; 86:5213-5226. [PMID: 33764066 DOI: 10.1021/acs.joc.1c00124] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Organic transformations exclusively in water as an environmentally friendly and safe medium have drawn significant interest in the recent years. Moreover, transition metal-free synthesis of enantiopure molecules in water will have a great deal of attention as the system will mimic the natural enzymatic reactions. In this work, a new set of proline-derived hydrophobic organocatalysts have been synthesized and utilized for asymmetric Michael reactions in water as the sole reaction medium. Among the various catalysts screened, the catalyst 1 is indeed efficient for stereoselective 1,4-conjugated Michael additions (dr: >97:3, ee up to >99.9%) resulting in high chemical yields (up to 95%) in a very short reaction time (1 h) at room temperature. This methodology provides a robust, green, and convenient protocol and can thus be an important addition to the arsenal of the asymmetric Michael addition reaction. Upon successful implementation, the present strategy also led to the formation of an optically active octahydroindole, the key component found in many natural products.
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Affiliation(s)
- Chandan K Mahato
- TCG Lifesciences Pvt. Limited, BN-7, Sector V, Salt Lake City, Kolkata 700091, India.,Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Sayan Mukherjee
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Mrinalkanti Kundu
- TCG Lifesciences Pvt. Limited, BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Virbhadra P Vallapure
- TCG Lifesciences Pvt. Limited, BN-7, Sector V, Salt Lake City, Kolkata 700091, India
| | - Animesh Pramanik
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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6
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Čmelová P, Vargová D, Šebesta R. Hybrid Peptide-Thiourea Catalyst for Asymmetric Michael Additions of Aldehydes to Heterocyclic Nitroalkenes. J Org Chem 2021; 86:581-592. [PMID: 33258590 DOI: 10.1021/acs.joc.0c02251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Bifunctional organocatalysis combining covalent and noncovalent activation is presented. The hybrid peptide-thiourea catalyst features a N-terminal proline moiety for aldehyde activation and a thiourea unit for electrophile activation. This catalyst effectively promotes asymmetric Michael additions of aldehydes to challenging but biologically relevant heterocycle-containing nitroalkenes. The catalyst can be used under solvent-free conditions. Spectroscopic and density functional theory studies elucidate the catalyst structure and mode of action.
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Affiliation(s)
- Patrícia Čmelová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Denisa Vargová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
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7
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Metrano AJ, Chinn AJ, Shugrue CR, Stone EA, Kim B, Miller SJ. Asymmetric Catalysis Mediated by Synthetic Peptides, Version 2.0: Expansion of Scope and Mechanisms. Chem Rev 2020; 120:11479-11615. [PMID: 32969640 PMCID: PMC8006536 DOI: 10.1021/acs.chemrev.0c00523] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Low molecular weight synthetic peptides have been demonstrated to be effective catalysts for an increasingly wide array of asymmetric transformations. In many cases, these peptide-based catalysts have enabled novel multifunctional substrate activation modes and unprecedented selectivity manifolds. These features, along with their ease of preparation, modular and tunable structures, and often biomimetic attributes make peptides well-suited as chiral catalysts and of broad interest. Many examples of peptide-catalyzed asymmetric reactions have appeared in the literature since the last survey of this broad field in Chemical Reviews (Chem. Rev. 2007, 107, 5759-5812). The overarching goal of this new Review is to provide a comprehensive account of the numerous advances in the field. As a corollary to this goal, we survey the many different types of catalytic reactions, ranging from acylation to C-C bond formation, in which peptides have been successfully employed. In so doing, we devote significant discussion to the structural and mechanistic aspects of these reactions that are perhaps specific to peptide-based catalysts and their interactions with substrates and/or reagents.
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Affiliation(s)
- Anthony J. Metrano
- AstraZeneca Oncology R&D, 35 Gatehouse Dr., Waltham, MA 02451, United States
| | - Alex J. Chinn
- Department of Chemistry, Princeton University, Princeton, NJ 08544, United States
| | - Christopher R. Shugrue
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Elizabeth A. Stone
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520, United States
| | - Byoungmoo Kim
- Department of Chemistry, Clemson University, Clemson, SC 29634, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520, United States
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8
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Shim JH, Kim MJ, Lee JY, Kim KH, Ha DC. Organocatalytic asymmetric aldol reaction using protonated chiral 1,2-diamines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152295] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Krištofíková D, Modrocká V, Mečiarová M, Šebesta R. Green Asymmetric Organocatalysis. CHEMSUSCHEM 2020; 13:2828-2858. [PMID: 32141177 DOI: 10.1002/cssc.202000137] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Asymmetric organocatalysis is becoming one of the main tools for the synthesis of chiral compounds that are needed as medicines, crop protection agents, and other bioactive molecules. It can be effectively combined with various green chemistry methodologies. Intensification techniques, such as ball milling, flow, high pressure, or light, bring not only higher yields, faster reactions, and easier product isolation, but also new reactivities. More sustainable reaction media, such as ionic liquids, deep eutectic solvents, green solvent alternatives, and water, also considerably enhance the sustainability profile of many organocatalytic reactions.
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Affiliation(s)
- Dominika Krištofíková
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Viktória Modrocká
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
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10
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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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11
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Du ZH, Tao BX, Yuan M, Qin WJ, Xu YL, Wang P, Da CS. Peptide-Catalyzed Highly Asymmetric Cross-Aldol Reaction of Aldehydes to Biomimetically Synthesize 1,4-Dicarbonyls. Org Lett 2020; 22:4444-4450. [PMID: 32463241 DOI: 10.1021/acs.orglett.0c01407] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
β-Turn tetrapeptides were demonstrated to catalyze asymmetric aldol reaction of α-branched aldehydes and α-carbonyl aldehydes, i.e. glyoxylates and α-ketoaldehydes, to biomimetically synthesize acyclic all-carbon quaternary center-bearing 1,4-dicarbonyls in high yield and excellent enantioselectivity under mild conditions. The spatially restricted environment of the tetrapeptide warrants high enantioselectivity and yield with broad substrates. Using this protocol, (R)-pantolactone, the key intermediate of vitamin B5, was readily accessed in a practical, efficient, and environmentally benign process from inexpensive starting materials.
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Affiliation(s)
- Zhi-Hong Du
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Bao-Xiu Tao
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Meng Yuan
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Wen-Juan Qin
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yan-Li Xu
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Pei Wang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Chao-Shan Da
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.,State Key Laboratory of Applied Organic Chemistry, and Key Lab of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
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12
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Du ZH, Qin WJ, Tao BX, Yuan M, Da CS. N-Primary-amine tetrapeptide-catalyzed highly asymmetric Michael addition of aliphatic aldehydes to maleimides. Org Biomol Chem 2020; 18:6899-6904. [DOI: 10.1039/d0ob01457e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The highly asymmetric Michael addition reaction between maleimides and aldehydes catalyzed by N-primary-amine β-turn tetrapeptides with excellent yields and enantioselectivities was reported.
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Affiliation(s)
- Zhi-Hong Du
- Institute of Biochemistry and Molecular Biology
- School of Life Sciences
- Lanzhou University
- Lanzhou 730000
- China
| | - Wen-Juan Qin
- Institute of Biochemistry and Molecular Biology
- School of Life Sciences
- Lanzhou University
- Lanzhou 730000
- China
| | - Bao-Xiu Tao
- Institute of Biochemistry and Molecular Biology
- School of Life Sciences
- Lanzhou University
- Lanzhou 730000
- China
| | - Meng Yuan
- Institute of Biochemistry and Molecular Biology
- School of Life Sciences
- Lanzhou University
- Lanzhou 730000
- China
| | - Chao-Shan Da
- Institute of Biochemistry and Molecular Biology
- School of Life Sciences
- Lanzhou University
- Lanzhou 730000
- China
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13
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14
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Mondal A, Bhowmick KC. Asymmetric Direct Aldol Reaction Catalyzed by (1R, 2R)-(+)-1, 2- Diammonium Cyclohexane-L-tartrate in Water. CURRENT ORGANOCATALYSIS 2019. [DOI: 10.2174/2213337206666181227151140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
A cheap and commercially available organocatalyst, (1R, 2R)-(+)-1, 2-
diammonium cyclohexane-L-tartrate 1 was applied in direct aldol reaction in water. The organocatalyst
1 afforded aldol products from cyclohexanone and substituted aromatic aldehydes with high
yield (up to 90%) and good stereoselectivity (up to 99% ee and up to 11.5:1 dr) in large volume of
water (10 ml).
Methods:
The same aldol reaction when carried out in the presence of more expensive organocatalyst
e.g. (1R, 2R)-(+)-1,2-diaminocyclohexane and 1,6-hexanediaoic acid as acid additive furnished the
aldol products with only 20% yield, 2:1 anti/syn ratio and 92% ee.
Results and Conclusion:
In summary, we have applied a reasonably cheap and commercially available
organocatalyst 1 for highly enantioselective direct aldol reaction in water at room temperature.
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Affiliation(s)
- Anirban Mondal
- Division of Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan-731 235, West Bengal, India
| | - Kartick Chandra Bhowmick
- Division of Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan-731 235, West Bengal, India
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15
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Serra-Pont A, Alfonso I, Solà J, Jimeno C. An efficient dynamic asymmetric catalytic system within a zinc-templated network. Chem Commun (Camb) 2019; 55:7970-7973. [PMID: 31219483 DOI: 10.1039/c9cc03958a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Enhanced cooperativity leading to high catalytic activity and stereoselectivity has been achieved through a complex network of simple species interacting reversibly. This novel dynamic catalytic system relies on bipyridine-based organocatalytic ligands and zinc(ii) as the template. It demonstrates the effectiveness of dealing with mixtures rather than single species in asymmetric catalysis.
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Affiliation(s)
- Anna Serra-Pont
- Department of Biological Chemistry, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E08034 Barcelona, Spain.
| | - Ignacio Alfonso
- Department of Biological Chemistry, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E08034 Barcelona, Spain.
| | - Jordi Solà
- Department of Biological Chemistry, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E08034 Barcelona, Spain.
| | - Ciril Jimeno
- Department of Biological Chemistry, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E08034 Barcelona, Spain.
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16
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Affiliation(s)
| | - Deepa
- Department of ChemistryUniversity of Delhi Delhi 110007 India
| | - Surendra Singh
- Department of ChemistryUniversity of Delhi Delhi 110007 India
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17
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Firouzi-Haji R, Maleki A. L-Proline-Functionalized Fe3
O4
Nanoparticles as an Efficient Nanomagnetic Organocatalyst for Highly Stereoselective One-Pot Two-Step Tandem Synthesis of Substituted Cyclopropanes. ChemistrySelect 2019. [DOI: 10.1002/slct.201802608] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Razieh Firouzi-Haji
- Catalysts and Organic Synthesis Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
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18
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Ahmetlli A, Spiliopoulou N, Magi-Oikonomopoulou A, Gerokonstantis DT, Moutevelis-Minakakis P, Kokotos CG. Proline dipeptides containing fluorine moieties as oganocatalysts for the asymmetric aldol reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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19
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Owolabi IA, Subba Reddy U, Chennapuram M, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Takeshita M, Nakano H. A new type of amino amide organocatalyzed enantioselective crossed aldol reaction of ketones with aromatic aldehydes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Vlasserou I, Sfetsa M, Gerokonstantis DT, Kokotos CG, Moutevelis-Minakakis P. Combining prolinamides with 2-pyrrolidinone: Novel organocatalysts for the asymmetric aldol reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.054] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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21
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Jacoby CG, Vontobel PHV, Bach MF, Schneider PH. Highly efficient organocatalysts for the asymmetric aldol reaction. NEW J CHEM 2018. [DOI: 10.1039/c7nj04424k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of bifunctional organocatalysts containing both thiazolidine/pyrrolidine and imidazole cycles was prepared via a readily available synthetic route.
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Affiliation(s)
- C. G. Jacoby
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- 91501-970 Porto Alegre
- Brazil
| | - P. H. V. Vontobel
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- 91501-970 Porto Alegre
- Brazil
| | - M. F. Bach
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- 91501-970 Porto Alegre
- Brazil
| | - P. H. Schneider
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- 91501-970 Porto Alegre
- Brazil
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22
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Poláčková V, Čmelová P, Górová R, Šebesta R. Peptide-catalyzed stereoselective Michael addition of aldehydes and ketones to heterocyclic nitroalkenes. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-2126-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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23
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Obregón-Zúñiga A, Juaristi E. (2S,4R)-Hyp-(S)-Phe-OMe dipeptide supported on imidazolium tagged molecules as recoverable organocatalysts for asymmetric aldol reactions using water as reaction medium. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.07.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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24
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25
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Liu Y, Wei Z, Liu Y, Cao J, Liang D, Lin Y, Duan H. Novel α-amino acid-derived phase-transfer catalyst application to a highly enantio- and diastereoselective nitro-Mannich reaction. Org Biomol Chem 2017; 15:9234-9242. [DOI: 10.1039/c7ob02501g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Very broad substrate generality was observed, and the products were achieved in high enantio-/diastereoselectivities (90–>99.9% ee, 9 : 1 to 11 : 1 dr).
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Affiliation(s)
- Yuxin Liu
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Zhonglin Wei
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Yu Liu
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Jungang Cao
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Dapeng Liang
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Yingjie Lin
- Department of Chemistry
- Jilin University
- Changchun
- China
| | - Haifeng Duan
- Department of Chemistry
- Jilin University
- Changchun
- China
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26
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Sahin O, Eymur S, Uyanik A, Akceylan E, Yilmaz M. Chiral Calix[4]arenes-Bearing Prolinamide Functionality as Organocatalyst for Asymmetric Direct Aldol Reactions in Water. Polycycl Aromat Compd 2016. [DOI: 10.1080/10406638.2016.1176058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ozlem Sahin
- Department of Chemistry, Selcuk University, Konya, Turkey
| | - Serkan Eymur
- Department of Energy Systems Engineering, Giresun University, Giresun, Turkey
| | - Arzu Uyanik
- Department of Chemistry, Selcuk University, Konya, Turkey
| | - Ezgi Akceylan
- Department of Chemistry, Selcuk University, Konya, Turkey
| | - Mustafa Yilmaz
- Department of Chemistry, Selcuk University, Konya, Turkey
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27
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Yorulmaz T, Aydogan F, Yolacan C. New and effective proline-based catalysts for asymmetric aldol reaction in water. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1252988] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Tugba Yorulmaz
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Feray Aydogan
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
| | - Cigdem Yolacan
- Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
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28
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Yadav GD, Singh S. (l)-Prolinamide imidazolium hexafluorophosphate ionic liquid as an efficient reusable organocatalyst for direct asymmetric aldol reaction in solvent-free condition. RSC Adv 2016. [DOI: 10.1039/c6ra23652a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have designed a new hydrophobic ionic liquid derived from bromoester of trans-4-hydroxy-(l)-prolinamide and N-methylimidazole.
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Affiliation(s)
| | - Surendra Singh
- Department of Chemistry
- University of Delhi
- Delhi
- India – 110007
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29
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Ashokkumar V, Chithiraikumar C, Siva A. Binaphthyl-based chiral bifunctional organocatalysts for water mediated asymmetric List–Lerner–Barbas aldol reactions. Org Biomol Chem 2016; 14:9021-32. [DOI: 10.1039/c6ob01558a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binaphthyl-based organocatalysts were synthesized and successfully applied to the asymmetric List–Lerner–Barbas aldol reaction in water medium. These organocatalysts were found to be effective catalysts for the reactions of ketones with different aldehydes to give aldol products with higher yield and ee's.
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Affiliation(s)
- Veeramanoharan Ashokkumar
- Supramolecular and Organometallic Chemistry Lab
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | - Chinnadurai Chithiraikumar
- Supramolecular and Organometallic Chemistry Lab
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | - Ayyanar Siva
- Supramolecular and Organometallic Chemistry Lab
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
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30
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Kang SY, Park YS. Dual Enantioselective Control using D-phenylglycine-L-proline-derived Catalysts for the Enantioselective Addition of Diethylzinc to Aldehyde. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Seock Yong Kang
- Department of Chemistry; Konkuk University; Seoul 143-701 Korea
| | - Yong Sun Park
- Department of Chemistry; Konkuk University; Seoul 143-701 Korea
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31
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Water: the most versatile and nature’s friendly media in asymmetric organocatalyzed direct aldol reactions. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.09.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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32
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Hu XM, Zhang DX, Zhang SY, Wang PA. Highly modular dipeptide-like organocatalysts for direct asymmetric aldol reactions in brine. RSC Adv 2015. [DOI: 10.1039/c5ra07019h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The dipeptide-like organocatalysts have been developed for asymmetric aldol reactions in brine to achieve high yields and enantioselectivities with 1 mol% catalyst-loading.
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Affiliation(s)
- Xiao-Mu Hu
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Dong-Xu Zhang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Sheng-Yong Zhang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
| | - Ping-An Wang
- Department of Medicinal Chemistry
- School of Pharmacy
- The Fourth Military Medical University
- Xi'an
- P. R. China
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