beta -(keto or sulfonyl)esters from reaction of silyketene acetal and acyl or sulfonyl compound

摘要

Silylketene acetals, including "living" GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce beta -ketoesters or beta -sulfonylesters; polymeric products, including capped, coupled and chain-extended polymers and block copolymers can be prepared.