Functional Selectivity in Friedel-Crafts Alkylations with Allylic Halides Promoted by Solid Composite Lead Fluoride Reagent.

The composite lead fluoride reagent prepared from PbF2 and NaBr is a nonhygroscopic and efficient solid reagent for promoting Friedel–Crafts type reaction of aromatic compounds with allylic halides selectively to afford the monoallylated compounds.