Highly enantioselective synthesis of dialkyl and alkyl aryl N-tosylsulfimides

Enantiomerically pure S-alkyl-S-[(4S)-4-benzyl-2-oxo-1,3-oxazolidin-3-yl]-N-tosylsulfimides react with Grignard reagents affording dialkyl and alkyl aryl sulfimides in high chemical yield and enantiomeric excess.