Optical resolution of chiral N-alkyl-3,3-bismethoxycarbonyloxaziridines
作者:Maria Bucciarelli、Arrigo Forni、Irene Moretti、Giovanni Torre、Alexander Prosyanik、Remir G. Kostyanovsky
DOI:10.1039/c39850000998
日期:——
Classical opticalresolution by fractional crystallization of diastereoisomeric salts obtained from the reaction of racemic N-t-butyl-(3a) and N-isopropyl-oxaziridine-3,3-dicarboxylic acid monomethyl ester (3b) with (R)-(+)- and (S)-(–)-1-phenylethylamine, followed by methylation of the optically active (3a) and (3b), affords chiral oxaziridines (2a) and (2b) whose asymmetry is due solely to the nitrogen