Journal
SYNTHESIS-STUTTGART
Volume 44, Issue 11, Pages 1591-1602Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0031-1289756
Keywords
asymmetric synthesis; fluorine; amino acids; catalysis; chiral auxiliaries
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Funding
- IKERBASQUE, Basque Foundation for Science
- Spanish Ministry of Science and Innovation [CTQ2010-19774]
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This review article provides a comprehensive update on the development of new methods for the asymmetric synthesis of alpha-(trifluoromethyl)-alpha-amino acids, covering the literature from 2006 to mid-February 2012. Most of the methods discussed are based on asymmetric additions across the carbon-nitrogen double bond of the imines derived from esters of 3,3,3-trifluoropyruvic acid. Medium to high levels of stereocontrol can be achieved using phenylglycinol-derived chiral auxiliaries attached to the nitrogen of the corresponding imines. Among the enantioselective approaches, impressive results were achieved through the application of the Strecker reaction using chiral thioureas, as well as chiral Bronsted acids, as organocatalysts. 1 Introduction 2 Stoichiometric Asymmetric Syntheses of alpha-(Trifluoromethyl)-alpha-amino Acids 3 Catalytic Asymmetric Syntheses of alpha-(Trifluoromethyl)-alpha-amino Acids 4 Miscellaneous 5 Conclusions
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