N-Phenylsulfenylimines derived from aliphatic, aromatic and heteroaromatic aldehydes act as nucleophilic partners in the Staudinger reaction with acetoxyacetyl chloride. Disubstituted-beta-lactams are obtained with a surprisingly high trans diastereoselection (up to 99%). (c) 2007 Published by Elsevier Ltd.
YOSHIDA, TOYOKICHI;NARUTO, SHUNSUKE;UNO, HITOSHI;NISHIMURA, HARUKI, CHEM. AND PHARM. BULL., 1982, 30, N 12, 4346-4351