1
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Cen S, Huang N, Lian D, Shen A, Zhao MX, Zhang Z. Conformational enantiodiscrimination for asymmetric construction of atropisomers. Nat Commun 2022; 13:4735. [PMID: 35961985 PMCID: PMC9374765 DOI: 10.1038/s41467-022-32432-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/27/2022] [Indexed: 02/08/2023] Open
Abstract
Molecular conformations induced by the rotation about single bonds play a crucial role in chemical transformations. Revealing the relationship between the conformations of chiral catalysts and the enantiodiscrimination is a formidable challenge due to the great difficulty in isolating the conformers. Herein, we report a chiral catalytic system composed of an achiral catalytically active unit and an axially chiral 1,1'-bi-2-naphthol (BINOL) unit which are connected via a C-O single bond. The two conformers of the catalyst induced by the rotation about the C-O bond, are determined via single-crystal X-ray diffraction and found to respectively lead to the formation of highly important axially chiral 1,1'-binaphthyl-2,2'-diamine (BINAM) and 2-amino-2'-hydroxy-1,1'-binaphthyl (NOBIN) derivatives in high yields (up to 98%), with excellent enantioselectivities (up to 98:2 e.r.) and opposite absolute configurations. The results highlight the importance of conformational dynamics of chiral catalysts in asymmetric catalysis.
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Affiliation(s)
- Shouyi Cen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Nini Huang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Dongsheng Lian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Ahui Shen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Mei-Xin Zhao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China.
| | - Zhipeng Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China.
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2
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Tomer SO, Soni HP. Cinchona alkaloid derivative modified Fe 3O 4 nanoparticles for enantioselective ring opening of meso-cyclic anhydrides. NEW J CHEM 2022. [DOI: 10.1039/d1nj04081b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Making magnetic achiral surfaces chiral for asymmetric catalysis! Enantioselective meso-cyclic anhydride ring opening is demonstrated on the surface of modified-quinidine capped Fe3O4 nanoparticles.
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Affiliation(s)
- Sanjiv O. Tomer
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390 002, Gujarat, India
| | - Hemant P. Soni
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390 002, Gujarat, India
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3
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Niu R, He Y, Lin JB. Catalytic asymmetric synthesis of α-stereogenic carboxylic acids: recent advances. Org Biomol Chem 2021; 20:37-54. [PMID: 34854454 DOI: 10.1039/d1ob02038b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chiral carboxylic acids bearing an α-stereogenic center constitute the backbone of many natural products and therapeutic reagents as well as privileged chiral ligands and catalysts. Hence, it is not surprising that a large number of elegant catalytic asymmetric strategies have been developed toward the efficient synthesis of α-chiral carboxylic acids, such as α-hydroxy acids and α-amino acids. In this review, the recent advances in asymmetric synthesis of α-stereogenic free carboxylic acids via organocatalysis and transition metal catalysis are summarized (mainly from 2010 to 2020). The content is organized by the reaction type of the carboxyl source involved, including asymmetric functionalization of substituted carboxylic acids, cyclic anhydrides, α-keto acids, substituted α,β-unsaturated acids and so on. We hope that this review will motivate further interest in catalytic asymmetric synthesis of chiral α-substituted carboxylic acids.
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Affiliation(s)
- Rui Niu
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China.
| | - Yi He
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China.
| | - Jun-Bing Lin
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China.
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4
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Chan YC, Wang X, Lam YP, Wong J, Tse YLS, Yeung YY. A Catalyst-Controlled Enantiodivergent Bromolactonization. J Am Chem Soc 2021; 143:12745-12754. [PMID: 34350758 DOI: 10.1021/jacs.1c05680] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A catalyst-controlled enantiodivergent bromolactonization of olefinic acids has been developed. Quinine-derived amino-amides bearing the same chiral core but different achiral aryl substituents were used as the catalysts. Switching the methoxy substituent in the aryl amide system from meta- to ortho-position results in a complete switch in asymmetric induction to afford the desired lactone in good enantioselectivity and yield. Mechanistic studies, including chemical experiments and density functional theory calculations, reveal that the differences in steric and electronic effects of the catalyst substituent alter the reaction mechanism.
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Affiliation(s)
- Yuk-Cheung Chan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Xinyan Wang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ying-Pong Lam
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Jonathan Wong
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ying-Lung Steve Tse
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ying-Yeung Yeung
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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5
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Rizzo C, Mandoli A, Marullo S, D’Anna F. Ionic Liquid Gels: Supramolecular Reaction Media for the Alcoholysis of Anhydrides. J Org Chem 2019; 84:6356-6365. [DOI: 10.1021/acs.joc.9b00684] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carla Rizzo
- Università degli Studi di Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Ed. 17, 90128 Palermo, Italia
| | - Alessandro Mandoli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, n. 13, 56124 Pisa, Italia
| | - Salvatore Marullo
- Università degli Studi di Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Ed. 17, 90128 Palermo, Italia
| | - Francesca D’Anna
- Università degli Studi di Palermo, Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Ed. 17, 90128 Palermo, Italia
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6
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Crawford JM, Sigman MS. Conformational Dynamics in Asymmetric Catalysis: Is Catalyst Flexibility a Design Element? SYNTHESIS-STUTTGART 2019; 51:1021-1036. [PMID: 31235980 PMCID: PMC6590688 DOI: 10.1055/s-0037-1611636] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Traditionally, highly selective low molecular weight catalysts have been designed to contain rigidifying structural elements. As a result, many proposed stereochemical models rely on steric repulsion for explaining the observed selectivity. Recently, as is the case for enzymatic systems, it has become apparent that some flexibility can be beneficial for imparting selectivity. Dynamic catalysts can reorganize to maximize attractive non-covalent interactions that stabilize the favored diastereomeric transition state, while minimizing repulsive non-covalent interactions for enhanced selectivity. This Short Review discusses catalyst conformational dynamics and how these effects have proven beneficial for a variety of catalyst classes, including tropos ligands, cinchona alkaloids, hydrogen-bond donating catalysts, and peptides.
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Affiliation(s)
- Jennifer M. Crawford
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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8
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Xu L, Han S, Yan L, Wang H, Peng H, Chen F. Novel amide-functionalized chloramphenicol base bifunctional organocatalysts for enantioselective alcoholysis of meso-cyclic anhydrides. Beilstein J Org Chem 2018; 14:309-317. [PMID: 29507636 PMCID: PMC5815282 DOI: 10.3762/bjoc.14.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/22/2018] [Indexed: 12/26/2022] Open
Abstract
A family of novel chloramphenicol base-amide organocatalysts possessing a NH functionality at C-1 position as monodentate hydrogen bond donor were developed and evaluated for enantioselective organocatalytic alcoholysis of meso-cyclic anhydrides. These structural diversified organocatalysts were found to induce high enantioselectivity in alcoholysis of anhydrides and was successfully applied to the asymmetric synthesis of (S)-GABOB.
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Affiliation(s)
- Lingjun Xu
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Shuwen Han
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Linjie Yan
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Haifeng Wang
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Haihui Peng
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Fener Chen
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
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9
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Blise K, Cvitkovic MW, Gibbs NJ, Roberts SF, Whitaker RM, Hofmeister GE, Kohen D. A Theoretical Mechanistic Study of the Asymmetric Desymmetrization of a Cyclic meso-Anhydride by a Bifunctional Quinine Sulfonamide Organocatalyst. J Org Chem 2017; 82:1347-1355. [DOI: 10.1021/acs.joc.6b02320] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katie Blise
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
| | - Milan W. Cvitkovic
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
| | - Nolly J. Gibbs
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
| | - Sean F. Roberts
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
| | - Reid M. Whitaker
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
| | | | - Daniela Kohen
- Department of Chemistry, Carleton College, Northfield, Minnesota 55057, United States
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10
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Tanriver G, Dedeoglu B, Catak S, Aviyente V. Computational Studies on Cinchona Alkaloid-Catalyzed Asymmetric Organic Reactions. Acc Chem Res 2016; 49:1250-62. [PMID: 27254097 DOI: 10.1021/acs.accounts.6b00078] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Remarkable progress in the area of asymmetric organocatalysis has been achieved in the last decades. Cinchona alkaloids and their derivatives have emerged as powerful organocatalysts owing to their reactivities leading to high enantioselectivities. The widespread usage of cinchona alkaloids has been attributed to their nontoxicity, ease of use, stability, cost effectiveness, recyclability, and practical utilization in industry. The presence of tunable functional groups enables cinchona alkaloids to catalyze a broad range of reactions. Excellent experimental studies have extensively contributed to this field, and highly selective reactions were catalyzed by cinchona alkaloids and their derivatives. Computational modeling has helped elucidate the mechanistic aspects of cinchona alkaloid catalyzed reactions as well as the origins of the selectivity they induce. These studies have complemented experimental work for the design of more efficient catalysts. This Account presents recent computational studies on cinchona alkaloid catalyzed organic reactions and the theoretical rationalizations behind their effectiveness and ability to induce selectivity. Valuable efforts to investigate the mechanisms of reactions catalyzed by cinchona alkaloids and the key aspects of the catalytic activity of cinchona alkaloids in reactions ranging from pharmaceutical to industrial applications are summarized. Quantum mechanics, particularly density functional theory (DFT), and molecular mechanics, including ONIOM, were used to rationalize experimental findings by providing mechanistic insights into reaction mechanisms. B3LYP with modest basis sets has been used in most of the studies; nonetheless, the energetics have been corrected with higher basis sets as well as functionals parametrized to include dispersion M05-2X, M06-2X, and M06-L and functionals with dispersion corrections. Since cinchona alkaloids catalyze reactions by forming complexes with substrates via hydrogen bonds and long-range interactions, the use of split valence triple-ζ basis sets including diffuse and polarization functions on heavy atoms and polarization functions on hydrogens are recommended. Most of the studies have used the continuum-based models to mimic the condensed phase in which organocatalysts function; in some cases, explicit solvation was shown to yield better quantitative agreement with experimental findings. The conformational behavior of cinchona alkaloids is also highlighted as it is expected to shed light on the origin of selectivity and pave the way to a comprehensive understanding of the catalytic mechanism. The ultimate goal of this Account is to provide an up-to-date overlook on cinchona alkaloid catalyzed chemistry and provide insight for future studies in both experimental and theoretical fields.
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Affiliation(s)
- Gamze Tanriver
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Burcu Dedeoglu
- Foundations
Development Directorate, Sabancı University, Tuzla-Orhanlı, Istanbul 34956, Turkey
| | - Saron Catak
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Viktorya Aviyente
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
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11
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Bryant LA, Fanelli R, Cobb AJA. Cupreines and cupreidines: an established class of bifunctional cinchona organocatalysts. Beilstein J Org Chem 2016; 12:429-43. [PMID: 27340439 PMCID: PMC4901932 DOI: 10.3762/bjoc.12.46] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 02/16/2016] [Indexed: 12/18/2022] Open
Abstract
Cinchona alkaloids with a free 6'-OH functionality are being increasingly used within asymmetric organocatalysis. This fascinating class of bifunctional catalyst offers a genuine alternative to the more commonly used thiourea systems and because of the different spacing between the functional groups, can control enantioselectivity where other organocatalysts have failed. In the main, this review covers the highlights from the last five years and attempts to show the diversity of reactions that these systems can control. It is hoped that chemists developing asymmetric methodologies will see the value in adding these easily accessible, but underused organocatalysts to their screens.
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Affiliation(s)
- Laura A Bryant
- School of Chemistry, Food and Pharmacy (SCFP), University of Reading, Whiteknights, Reading, Berks RG6 6AD, United Kingdom
| | - Rossana Fanelli
- School of Chemistry, Food and Pharmacy (SCFP), University of Reading, Whiteknights, Reading, Berks RG6 6AD, United Kingdom
| | - Alexander J A Cobb
- School of Chemistry, Food and Pharmacy (SCFP), University of Reading, Whiteknights, Reading, Berks RG6 6AD, United Kingdom
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12
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Grayson MN, Houk KN. Cinchona Alkaloid-Catalyzed Asymmetric Conjugate Additions: The Bifunctional Brønsted Acid–Hydrogen Bonding Model. J Am Chem Soc 2016; 138:1170-3. [DOI: 10.1021/jacs.5b13275] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Matthew N. Grayson
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
- Centre
for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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13
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Borissov A, Davies TQ, Ellis SR, Fleming TA, Richardson MSW, Dixon DJ. Organocatalytic enantioselective desymmetrisation. Chem Soc Rev 2016; 45:5474-5540. [DOI: 10.1039/c5cs00015g] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Dedeoglu B, Catak S, Yildirim A, Bolm C, Aviyente V. Cinchona Alkaloid Catalyzed Asymmetric Desymmetrization ofmeso-Cyclic Anhydrides: The Origins of Stereoselectivity. ChemCatChem 2015. [DOI: 10.1002/cctc.201500852] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Burcu Dedeoglu
- Department of Chemistry; Bogazici University; Bebek Istanbul 34342 Turkey
- Sabanci University; Orhanlı-Tuzla 34956 Istanbul Turkey
| | - Saron Catak
- Department of Chemistry; Bogazici University; Bebek Istanbul 34342 Turkey
| | - Asli Yildirim
- Department of Chemistry; Michigan State University; East Lansing Michigan 48824 USA
| | - Carsten Bolm
- Institut für Organische Chemie der; RWTH Aachen University; Landoltweg 1 D-52056 Aachen Germany
| | - Viktorya Aviyente
- Department of Chemistry; Bogazici University; Bebek Istanbul 34342 Turkey
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15
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Uccello Barretta G, Mandoli A, Balzano F, Aiello F, De Nicola B, Del Grande A. Monomeric and Dimeric 9-OAnthraquinone and Phenanthryl Derivatives of Cinchona Alkaloids as Chiral Solvating Agents for the NMR Enantiodiscrimination of Chiral Hemiesters. Chirality 2015; 27:693-9. [DOI: 10.1002/chir.22488] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 07/09/2015] [Indexed: 11/05/2022]
Affiliation(s)
| | - Alessandro Mandoli
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Federica Balzano
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Federica Aiello
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Beatrice De Nicola
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
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16
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Qi J, Fan GT, Chen J, Sun MH, Dong YT, Zhou L. Catalytic enantioselective bromoamination of allylic alcohols. Chem Commun (Camb) 2015; 50:13841-4. [PMID: 25259372 DOI: 10.1039/c4cc05772d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An enantioselective bromoamination of allylic alcohols has been developed for the first time using a newly designed cinchona-derived thiourea as the catalyst and N,N-dibromo-4-nitrobenzenesulfonamide as a bromine and amine source.
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Affiliation(s)
- Juan Qi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China.
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17
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Jumde RP, Di Pietro A, Manariti A, Mandoli A. New Polymer-Supported Mono- and Bis-CinchonaAlkaloid Derivatives: Synthesis and Use in Asymmetric Organocatalyzed Reactions. Chem Asian J 2014; 10:397-404. [DOI: 10.1002/asia.201402924] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 10/29/2014] [Indexed: 01/01/2023]
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18
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Chen YM, Amireddy M, Chen K. Organocatalytic desymmetrization of cyclic meso-anhydrides through enantioselective alcoholysis with functionalized primary nitroallylic alcohols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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19
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Belmessieri D, de la Houpliere A, Calder EDD, Taylor JE, Smith AD. Stereodivergent organocatalytic intramolecular Michael addition/lactonization for the asymmetric synthesis of substituted dihydrobenzofurans and tetrahydrofurans. Chemistry 2014; 20:9762-9. [PMID: 24989672 PMCID: PMC4517160 DOI: 10.1002/chem.201402684] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Indexed: 11/19/2022]
Abstract
A stereodivergent asymmetric Lewis base catalyzed Michael addition/lactonization of enone acids into substituted dihydrobenzofuran and tetrahydrofuran derivatives is reported. Commercially available (S)-(-)-tetramisole hydrochloride gives products with high syn diastereoselectivity in excellent enantioselectivity (up to 99:1 d.r.syn/anti , 99 % eesyn ), whereas using a cinchona alkaloid derived catalyst gives the corresponding anti-diastereoisomers as the major product (up to 10:90 d.r.syn/anti , 99 % eeanti ).
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Affiliation(s)
- Dorine Belmessieri
- EaStCHEM, School of Chemistry, University of St. AndrewsNorth Haugh, St. Andrews, KY16 9ST (UK) E-mail:
| | - Alix de la Houpliere
- EaStCHEM, School of Chemistry, University of St. AndrewsNorth Haugh, St. Andrews, KY16 9ST (UK) E-mail:
| | - Ewen D D Calder
- EaStCHEM, School of Chemistry, University of St. AndrewsNorth Haugh, St. Andrews, KY16 9ST (UK) E-mail:
| | - James E Taylor
- EaStCHEM, School of Chemistry, University of St. AndrewsNorth Haugh, St. Andrews, KY16 9ST (UK) E-mail:
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St. AndrewsNorth Haugh, St. Andrews, KY16 9ST (UK) E-mail:
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Prakash GKS, Wang F, Rahm M, Zhang Z, Ni C, Shen J, Olah GA. The trifluoromethyl group as a conformational stabilizer and probe: conformational analysis of cinchona alkaloid scaffolds. J Am Chem Soc 2014; 136:10418-31. [PMID: 24979676 DOI: 10.1021/ja504376u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The introduction of the CF3 group on the C9 atom in quinidine can significantly increase the conformational interconversion barrier of the cinchona alkaloid scaffold. With this modification the conformational behavior of cinchona alkaloids in various solvents can be conveniently investigated via (19)F NMR spectroscopy. Based on the reliable conformational distribution information obtained, the accuracy of both theoretical (PCM) and empirical (Kamlet-Taft) solvation models has been assessed using linear free energy relationship methods. The empirical solvation model was found to provide accurate prediction of solvent effects, while PCM demonstrated a relatively low reliability in the present study. Utilizing similar empirical solvation models along with Karplus-type equations, the conformational behavior of quinidine and 9-epi-quinidine has also been investigated. A model SN2 reaction has been presented to reveal the important role of solvent-induced conformational behavior of cinchona alkaloids in their reactivity.
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Affiliation(s)
- G K Surya Prakash
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
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21
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Metrano AJ, Miller SJ. Peptide-catalyzed conversion of racemic oxazol-5(4H)-ones into enantiomerically enriched α-amino acid derivatives. J Org Chem 2014; 79:1542-54. [PMID: 24517453 DOI: 10.1021/jo402828f] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We report the development and optimization of a tetrapeptide that catalyzes the methanolytic dynamic kinetic resolution of oxazol-5(4H)-ones (azlactones) with high levels of enantioinduction. Oxazolones possessing benzylic-type substituents were found to perform better than others, providing methyl ester products in 88:12 to 98:2 er. The mechanism of this peptide-catalyzed process was investigated through truncation studies and competition experiments. High-field NOESY analysis was performed to elucidate the solution-phase structure of the peptide, and we present a plausible model for catalysis.
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Affiliation(s)
- Anthony J Metrano
- Department of Chemistry, Yale University , New Haven, Connecticut 06520-8107, United States
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Moran A, Hamilton A, Bo C, Melchiorre P. A Mechanistic Rationale for the 9-Amino(9-deoxy)epi Cinchona Alkaloids Catalyzed Asymmetric Reactions via Iminium Ion Activation of Enones. J Am Chem Soc 2013; 135:9091-8. [DOI: 10.1021/ja404784t] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Antonio Moran
- Institute of Chemical Research of Catalonia, ICIQ, Avenida Països Catalans
16, 43007 Tarragona, Spain
| | - Alex Hamilton
- Institute of Chemical Research of Catalonia, ICIQ, Avenida Països Catalans
16, 43007 Tarragona, Spain
| | - Carles Bo
- Institute of Chemical Research of Catalonia, ICIQ, Avenida Països Catalans
16, 43007 Tarragona, Spain
- Department de Química
Física i Inorgànica, Universitat Rovira i Virgili (URV), Marcel.li Domingo, 43007 Tarragona,
Spain
| | - Paolo Melchiorre
- Institute of Chemical Research of Catalonia, ICIQ, Avenida Països Catalans
16, 43007 Tarragona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
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23
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Yang H, Wong MW. Oxyanion Hole Stabilization by C–H···O Interaction in a Transition State—A Three-Point Interaction Model for Cinchona Alkaloid-Catalyzed Asymmetric Methanolysis of meso-Cyclic Anhydrides. J Am Chem Soc 2013; 135:5808-18. [DOI: 10.1021/ja4005893] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hui Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Ming Wah Wong
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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Hintermann L, Ackerstaff J, Boeck F. Inner Workings of a Cinchona Alkaloid Catalyzed Oxa-Michael Cyclization: Evidence for a Concerted Hydrogen-Bond-Network Mechanism. Chemistry 2013; 19:2311-21. [DOI: 10.1002/chem.201203505] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Indexed: 11/09/2022]
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25
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Yang W, Tan D, Li L, Han Z, Yan L, Huang KW, Tan CH, Jiang Z. Direct Asymmetric Allylic Alkenylation of N-Itaconimides with Morita–Baylis–Hillman Carbonates. J Org Chem 2012; 77:6600-7. [DOI: 10.1021/jo3012539] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenguo Yang
- Institute of Chemical
Biology, Henan University, Kaifeng, Henan,
P. R. China, 475004
| | - Davin Tan
- KAUST Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom
of Saudi Arabia, 23955-6900
| | - Lixin Li
- Institute of Chemical
Biology, Henan University, Kaifeng, Henan,
P. R. China, 475004
| | - Zhiqiang Han
- Institute of Chemical
Biology, Henan University, Kaifeng, Henan,
P. R. China, 475004
| | - Lin Yan
- Institute of Chemical
Biology, Henan University, Kaifeng, Henan,
P. R. China, 475004
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom
of Saudi Arabia, 23955-6900
| | - Choon-Hong Tan
- Key
Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan, P. R. China, 475004
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore,
637371
| | - Zhiyong Jiang
- Institute of Chemical
Biology, Henan University, Kaifeng, Henan,
P. R. China, 475004
- Key
Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan, P. R. China, 475004
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Tárkányi G, Király P, Soós T, Varga S. Active Conformation in Amine-Thiourea Bifunctional Organocatalysis Preformed by Catalyst Aggregation. Chemistry 2012; 18:1918-22. [DOI: 10.1002/chem.201102701] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 12/01/2011] [Indexed: 11/08/2022]
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27
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Tanzer EM, Schweizer WB, Ebert MO, Gilmour R. Designing fluorinated cinchona alkaloids for enantioselective catalysis: controlling internal rotation by a fluorine-ammonium ion gauche effect (φ(NCCF)). Chemistry 2012; 18:2006-13. [PMID: 22250061 DOI: 10.1002/chem.201102859] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Indexed: 11/12/2022]
Abstract
The C9 position of cinchona alkaloids functions as a molecular hinge, with internal rotations around the C8-C9 (τ(1)) and C9-C4' (τ(2)) bonds giving rise to four low energy conformers (1; anti-closed, anti-open, syn-closed, and syn-open). By substituting the C9 carbinol centre by a configurationally defined fluorine substituent, a fluorine-ammonium ion gauche effect (σ(C-H) → σ(C-F)*; F(δ-)⋅⋅⋅N(+)) encodes for two out of the four possible conformers (2). This constitutes a partial solution to the long-standing problem of governing internal rotations in cinchonium-based catalysts relying solely on a fluorine conformational effect.
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Affiliation(s)
- Eva-Maria Tanzer
- Laboratory for Organic Chemistry, Swiss Federal Institute of Technology (ETH) Zürich, 8093 Zürich, Switzerland
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28
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Rodriguez-Docampo Z, Connon SJ. Organocatalytic Asymmetric Additions tomeso-Anhydrides and Azlactones. ChemCatChem 2011. [DOI: 10.1002/cctc.201100266] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Balzano F, Jumde RP, Mandoli A, MASI SOFIA, PINI DARIO, UCCELLO-BARRETTA GLORIA. Mono- and bis-quinidine organocatalysts in the asymmetric methanolysis of cis-1,2,3,6-tetrahydrophthalic anhydride: A conformational and mechanistic NMR study. Chirality 2011; 23:784-95. [DOI: 10.1002/chir.20993] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Zhu B, Yan L, Pan Y, Lee R, Liu H, Han Z, Huang KW, Tan CH, Jiang Z. Lewis Base Catalyzed Enantioselective Allylic Hydroxylation of Morita–Baylis–Hillman Carbonates with Water. J Org Chem 2011; 76:6894-900. [DOI: 10.1021/jo201096e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Zhu
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - Lin Yan
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - Yuanhang Pan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Richmond Lee
- KAUST Catalysis Center and Division of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia, 23955-6900
| | - Hongjun Liu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Zhiqiang Han
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan 475004, People’s Republic of China
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia, 23955-6900
| | - Choon-Hong Tan
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan 475004, People’s Republic of China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Zhiyong Jiang
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Kaifeng, Henan 475004, People’s Republic of China
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31
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Lozano O, Blessley G, Martinez del Campo T, Thompson AL, Giuffredi GT, Bettati M, Walker M, Borman R, Gouverneur V. Organocatalyzed Enantioselective Fluorocyclizations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103151] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Lozano O, Blessley G, Martinez del Campo T, Thompson AL, Giuffredi GT, Bettati M, Walker M, Borman R, Gouverneur V. Organocatalyzed enantioselective fluorocyclizations. Angew Chem Int Ed Engl 2011; 50:8105-9. [PMID: 21751319 DOI: 10.1002/anie.201103151] [Citation(s) in RCA: 350] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Indexed: 11/06/2022]
Abstract
Enantioenriched fluorinated heterocycles can be prepared through fluorocyclizations of prochiral indoles (see scheme; Ts=tosyl, Bn=benzyl, Boc=tert-butoxycarbonyl). More than twenty examples for this cascade fluorination-cyclization, which is catalyzed by cinchona alkaloids and employs N-fluorobenzenesulfonimide as the electrophilic fluorine source have been explored, and an unprecedented catalytic asymmetric difluorocyclization has also been identified.
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Affiliation(s)
- Oscar Lozano
- Chemistry Research Laboratory, University of Oxford, UK
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33
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de Villegas MDD, Gálvez JA, Etayo P, Badorrey R, López-Ram-de-Víu P. Recent advances in enantioselective organocatalyzed anhydride desymmetrization and its application to the synthesis of valuable enantiopure compounds. Chem Soc Rev 2011; 40:5564-87. [PMID: 21731960 DOI: 10.1039/c1cs15120g] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recent years have witnessed increasing interest in the field of asymmetric organocatalysis. In particular, efforts in this field have been devoted to the use of small organic molecules in asymmetric processes based on enantiotopic face discrimination and, only recently, efforts have also been devoted to asymmetric organocatalytic desymmetrization of prochiral substrates-a process based on enantiotopic group discrimination. This critical review documents the advances in the use of organocatalysis for the enantioselective desymmetrization of achiral and meso anhydrides and its application to the synthesis of valuable compounds as reported until 2010 (134 references).
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Affiliation(s)
- María D Díaz de Villegas
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
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34
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Prakash GKS, Wang F, Ni C, Shen J, Haiges R, Yudin AK, Mathew T, Olah GA. Conformational Study of 9-Dehydro-9-Trifluoromethyl Cinchona Alkaloids via 19F NMR Spectroscopy: Emergence of Trifluoromethyl Moiety as a Conformational Stabilizer and a Probe. J Am Chem Soc 2011; 133:9992-5. [DOI: 10.1021/ja202373d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. K. Surya Prakash
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Fang Wang
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Chuanfa Ni
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Jingguo Shen
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Ralf Haiges
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Andrei K. Yudin
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Thomas Mathew
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - George A. Olah
- Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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35
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Yang W, Wei X, Pan Y, Lee R, Zhu B, Liu H, Yan L, Huang KW, Jiang Z, Tan CH. Highly Enantio- and Diastereoselective Synthesis of β-Methyl-γ-monofluoromethyl-Substituted Alcohols. Chemistry 2011; 17:8066-70. [DOI: 10.1002/chem.201100929] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Indexed: 11/07/2022]
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36
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Abstract
The use of small-molecule organic catalysts in organic synthesis has flourished over the past decade. Examples of defining concepts and cutting-edge results are provided in the papers in this Special Feature.
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