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Khangarot RK, Khandelwal M, Ray SK. Syntheses and Applications of Singh’s Catalyst. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Singh’s catalyst has emerged as one of the most promising and valuable catalysts in the field of asymmetric synthesis. Since its discovery, it has proven to be one of the best organocatalysts for asymmetric direct aldol reactions, and is equally efficient in aqueous and organic media. In this Short Review, we summarize reactions utilizing Singh’s catalyst under various conditions.1 Introduction2 Synthesis of Singh’s Catalyst3 Applications in Asymmetric Synthesis4 Conclusion
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Affiliation(s)
- Rama Kanwar Khangarot
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University
| | - Manisha Khandelwal
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University
| | - Sumit Kumar Ray
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal
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2
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Sperandio C, Rodriguez J, Quintard A. Development of copper-catalyzed enantioselective decarboxylative aldolization for the preparation of perfluorinated 1,3,5-triols featuring supramolecular recognition properties. Chem Sci 2020; 11:1629-1635. [PMID: 32206281 PMCID: PMC7069514 DOI: 10.1039/c9sc05196a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/17/2019] [Indexed: 01/09/2023] Open
Abstract
Fluorine is able to confer unique properties to organic molecules but the scarcity of natural organofluorine sources renders the development of new synthetic methods highly desirable. Using a chiral BOX/Cu combination, enantioselective decarboxylative aldolization of perfluorinated aldehydes has been developed. Most notably, the reaction occurring under mild conditions and with high enantiocontrol can create ketodiols in one single synthetic operation, which are precursors of crucial perfluorinated 1,3,5-triols. In addition, the reaction performed with chloral, validates the proposed transition state model based on steric interactions and provides the first enantioselective synthesis of hexachlorinated ketodiol of great synthetic utility. The ability of perfluorinated 1,3,5-triols to form a central hydrogen-bonding framework allows strong coordination of anions and the chirality obtained through the catalyst-controlled synthetic sequence demonstrates the selective chiral anion recognition ability of polyols.
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Affiliation(s)
- Céline Sperandio
- Aix Marseille Univ , CNRS , Centrale Marseille , iSm2 , Marseille , France . ; http://ism2.univ-amu.fr/fr/annuaire/stereo/quintardadrien
| | - Jean Rodriguez
- Aix Marseille Univ , CNRS , Centrale Marseille , iSm2 , Marseille , France . ; http://ism2.univ-amu.fr/fr/annuaire/stereo/quintardadrien
| | - Adrien Quintard
- Aix Marseille Univ , CNRS , Centrale Marseille , iSm2 , Marseille , France . ; http://ism2.univ-amu.fr/fr/annuaire/stereo/quintardadrien
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Sperandio C, Rodriguez J, Quintard A. Catalytic strategies towards 1,3-polyol synthesis by enantioselective cascades creating multiple alcohol functions. Org Biomol Chem 2020; 18:1025-1035. [PMID: 31976499 DOI: 10.1039/c9ob02675d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review highlights the different enantioselective catalyst-controlled cascades creating multiple alcohol functions through the formation of several carbon-carbon bonds. Through subsequent simple derivatization, these strategies ensure the rapid preparation of 1,3-polyols. Thanks to the use of efficient metal- or organo-catalysts, these cascades enable the selective assembly of multiple substrates considerably limiting operations and waste generation. For this purpose, several mono- or bi-directional approaches have been devised allowing successive C-C bond-forming events. The considerable synthetic economies these cascades enable have been demonstrated in the preparation of a wide variety of complex bioactive natural products, notably polyketides.
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Affiliation(s)
- Céline Sperandio
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
| | - Adrien Quintard
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
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Quintard A, Rodriguez J. Bicatalyzed Three-Component Stereoselective Decarboxylative Fluoro-Aldolization for the Construction of Elongated Fluorohydrins. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02353] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adrien Quintard
- Aix Marseille Univ, CNRS, Centrale Marseille,
iSm2, Marseille, 13397, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille,
iSm2, Marseille, 13397, France
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Kotani S, Kai K, Sugiura M, Nakajima M. Sequential Catalysis of Phosphine Oxide for Stereoselective Synthesis of Stereopentads. Org Lett 2017. [PMID: 28636385 DOI: 10.1021/acs.orglett.7b01719] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient method for accessing enantiomerically pure stereopentads via a catalytic asymmetric sequential aldol reaction has been developed for the first time. The enantioselective sequential aldol reaction produces a wide range of chiral stereopentad precursors in good yields with excellent enantioselectivities. The key to success is the use of the sequential catalytic system involving a chiral phosphine oxide catalyst and trichlorosilyl triflate.
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Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.,Priority Organization for Innovation and Excellence, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Kosuke Kai
- Graduate School of Pharmaceutical Sciences, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Masaharu Sugiura
- Graduate School of Pharmaceutical Sciences, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
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Ramachary DB, Shruthi KS. A Brønsted Acid-Amino Acid as a Synergistic Catalyst for Asymmetric List-Lerner-Barbas Aldol Reactions. J Org Chem 2016; 81:2405-19. [DOI: 10.1021/acs.joc.5b02896] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Dhevalapally B. Ramachary
- Catalysis Laboratory, School
of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
| | - Kodambahalli S. Shruthi
- Catalysis Laboratory, School
of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
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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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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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Quintard A, Rodriguez J. Didecarboxylative Iron-Catalyzed Bidirectional Aldolization towards Diversity-Oriented Ketodiol Synthesis. Chemistry 2015; 21:14717-22. [PMID: 26332439 DOI: 10.1002/chem.201502788] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Indexed: 11/10/2022]
Abstract
1,3-Acetonedicarboxylic acid was selectively activated by Fe(acac)3 , providing a synthetic platform for rapid synthesis of keto-3,3'-diols. The bidirectional aldol reaction was efficient for challenging aliphatic aldehydes, providing a rapid route to potentially bioactive complex structures.
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Affiliation(s)
- Adrien Quintard
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France).
| | - Jean Rodriguez
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France).
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Ramachary DB, Shruthi KS. Asymmetric synthesis of tetrahydroquinolines through supramolecular organocatalysis. Org Biomol Chem 2014; 12:4300-4. [DOI: 10.1039/c4ob00570h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalized chiral tetrahydroquinolines were synthesized through supramolecular organocatalysis using quinidine-NH-thiourea 3c/l-phenylalanine 4i followed by reductive amination from the simple substrates.
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Arigela RK, Samala S, Mahar R, Shukla SK, Kundu B. Synthesis of Triazolo Isoquinolines and Isochromenes from 2-Alkynylbenzaldehyde via Domino Reactions under Transition-Metal-Free Conditions. J Org Chem 2013; 78:10476-84. [DOI: 10.1021/jo401929q] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | | | | | | | - Bijoy Kundu
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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