Diels–Alder cycloaddition of novel buta-1,3-diene derivatives possessing a (diethoxyphosphinoyl)difluoromethyl unit
Abstract
A series of new buta-1,3-diene derivatives possessing a (diethoxyphosphinoyl)difluoromethylene unit at the terminal carbon was prepared to examine the reactivity for Diels–Alder cycloaddition with various representative dienophiles.