Beta-lactams, their production from azetidine carboxylic acids,
申请人:Research Corporation
公开号:US04163743A1
公开(公告)日:1979-08-07
Azetidine-2-carboxylic acids are transformed readily to the corresponding beta-lactams by iminium salt formation and reaction of the salt with a suitable nucleophile. The beta-lactams and substitution products thereof are useful intermediates in the synthesis of biologically active lactams such as nocardicin.