Organocuprate-induced substitution of the enol oxygen moiety in 2, 2-difluoro enol phosphates with allyl halides: a novel route to gem-diffluoroolefins from …
Abstract 2, 2-Difluoro-1-arylethenyl diphenyl phosphates, prepared from chloro- difluoromethyl ketones and diphenyl phosphite, reacted with dibutylcopperlithium and successively with various allyl halides to give allylated gem-difluoroolefins in moderate to excellent yields.