Abstract 3, 3-Difluoroallyltrimethyltin was prepared by reaction of chlorodifluoromethane with the ylide reagent Ph 3 P CHCH 2 SnMe 3 gem-Difluoroallyllithium, which was generated by the reaction of n-butyllithium with 3, 3-difluoroallyltrimethyltin in THF at− 95, was of very limited stability at that temperature. However, in situ procedures and alternate incremental addition procedures allowed its application in the synthesis of 1, 1-difluoroallylsilanes ...
