Abstract Diethyl difluoromethylphosphonylcadmium bromide reacts with allyl and benzyl halides in THF to give the corresponding difluoromethylenephosphonate derivatives. The reaction with allyl bromide affords a versatile synthetic intermediate which undergoes a variety of synthetic transformations and therefore becomes a key compound in the preparation of elaborated difluoromethylenephosphonates of biological significance.
