The aluminum chloride-catalyzed acylation of α-silylallylic selenides with acid chlorides at− 78° C produced γ-acylated vinylic selenides regioselectively. α-Silylallylic selenides in some cases underwent [1, 3] shifts of the selenenyl groups by the catalysis with aluminum chloride, affording γ-silylallylic selenides. This regioselective acylation of allylic selenides provides a new route to dihydrojasmone.
