(S)-2-[(R)-Fluoro(phenyl)methyl]oxirane: a general reagent for determining the ee of alpha-chiral amines
S. Rodríguez-Escrich, D. Popa, C. Jimeno, A. Vidal-Ferran, M. A. Pericàs
Org. Lett. 2005, 7, 3829-3832
Abstract: (S)-2-[(R)-Fluoro(phenyl)methyl]oxirane is a new, synthetic, yet enantiopure, chiral resolution reagent, readily obtained from enantiopure (2S,3S)-phenylglycidol, that reacts with a variety of -chiral primary and secondary amines in a straightforward manner through a regioselective ring-opening. Diastereomeric products are easily identified and quantified by 19F, 1H, and 13C NMR and by HPLC, which makes this fluorinated compound a most versatile reagent for the analysis of scalemic mixtures of amines.