2-(Trimethylsilyl)-1,3-dithiane 1-Oxide as a Convenient Reagent for the Transformation of Aldehydes and Ketones into Homologous Carboxylic Acids

Abstract

Aldehydes and ketones were converted into the corresponding homologous carboxylic acids in two steps by treatment with 2-(trimethylsilyl)-1,3-dithiane 1-oxide. A modified Peterson olefination of the carbonyl compounds gave ketene thioacetal sulfoxides that were readily cleaved in acidic acetonitrile to give the required carboxylic acids.