A facile and efficient protocol for the α-benzoyloxylation of β-keto sulfides is presented. This methodology provides a step-economical, mild and practical access to highly functionalized α-O-benzoyloxy substituted β-keto sulfides, including those with quaternary carbons, which are not easily obtained through currently available methods.
Dianions of β-keto-sulphoxides. A new general synthesis of vinyl ketones
作者:Paul A. Grieco、Dena Boxler、Chester S. Pogonowski
DOI:10.1039/c39740000497
日期:——
The dianion of the β-keto-sulphoxide (1) can be alkylated exclusively on the γ-carbon atom with a variety of alkyl halides; the resultant α-phenylsulphinyl ketones (3) undergo ready elimination of benzenesulphenic acid providing a newgeneral route to alkyl vinylketones.