DIASTEREOCONVERSION OF THREO 2-AMINO ALCOHOLS TO ERYTHRO ISOMERS THROUGH A NEW CYCLOCARBAMATION
A diastereoconversion of threo 2-amino alcohols to erythro isomers was achieved by treatment of N-Boc derivatives with thionyl chloride or with methanesulfonyl chloride in the presence of triethylamine, hereby cis-4,5-disubstituted oxazolidin-2-ones being produced.