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.
Dialkenylcuprates,通过加入dialkylcuprates的
乙炔生成,其中反应α β不饱和砜,得到顺式- γδ不饱和砜可与双键的构型保留容易desulphonylated。