P. Bravo et al., SYNTHESIS OF BOTH ENANTIOMERS OF ALPHA-(TRIFLUOROMETHYL)BUTYRINE AND ALPHA-(TRIFLUOROMETHYL)PHENYLALANINE, Gazzetta chimica italiana, 126(10), 1996, pp. 645-652
The synthesis of both enantiomers of alpha-(trinuoromethyl)butyrine an
d alpha-(trifluoromethyl)phenylalanine was accomplished by desulfuriza
tion and deprotection of the beta-trifluoromethyl sulfoxides, obtained
in the condensation of the corresponding optically pure alkyl p-tolyl
sulfoxides with N-alkoxycarbonylimines of methyl 3,3,3-trifluoropyruv
ate.