A novel stereoselective route to cis-olefins via addition of vinyl cuprates to αβ-unsaturated sulphones and subsequent desulphonylation
Abstract
Dialkenylcuprates, generated by addition of dialkylcuprates to acetylene, react with αβ-unsaturated sulphones to give cis-γδ-unsaturated sulphones which can be easily desulphonylated with retention of the double-bond configuration.