General and convenient route to alkenylidenecyclopropanes: generation of alkenylidenecarbenes from 1,1-dibromocyclopropanes under phase-transfer conditions
Abstract
Alkenylidenecyclopropanes have been prepared in a stereospecific manner by the reaction of 1,1-disubstituted 2,2-dibromocyclopropanes with sodium hydroxide under phase-transfer conditions in the presence of alkenes.