Regioselective catalysed H-ene reaction of allylsilanes with 3-butyn-2-one application to a new synthesis of (±)-γ-ionone

Article abstract of DOI:10.1016/S0040-4039(00)79170-2

An unexpected ZnI₂ catalysed regioselective H-ene reaction between allysilanes and butynone in the presence of molecular sieves 4A is reported. The silyl group dramatically enhanced the rate of the reaction which is used as a key for a new synt