Used as an alkylating agent in organic synthesis, particularly in the preparation of allylated compounds such as pharmaceuticals, agrochemicals, and fragrances. It serves as a source of the allyl group in reactions with nucleophiles due to its high reactivity. Employed in the synthesis of heterocyclic compounds and in palladium-catalyzed coupling reactions. Also utilized in the production of specialty monomers for polymers and in the modification of natural products to enhance biological activity.