A Mild, Efficient Methodology for the Synthesis of Carbacephem intermediates via Phase Transfer Catalysis
摘要:
A high yielding, one-pot method for the transesterification of ß-lactam intermediates is presented. The methodology involves the dual use of a phase transfer catalyst to carry out both a hydrolysis and re-esterification.
An enantiomerically selective process for acylating racemic 3-amino azetidinone intermediates is provided using penicillin G amidase(acylase) as biocatalyst.