The esters of α-allenic alcohols, and particularly the phosphates, react in the presence of catalytic amounts of a palladium (O) complex with the anions of ß-diesters, ß-ketoesters and α-phenylsulfonylesters, leading by a direct substitution to ß-difunctionalized allenes. This reaction can be applied to the fast obtention of an intermediate of the synthesis of the pheromone of dried bean beetle.
