The 3-Methyl-1,3-butadienyl Phenyl Sulfoxide II. Utilization as a Michael Acceptor of Lithiated Protected Cyanohydrins. Syntheses of Tagetones and Ocimenones

In contradistinction to the α, β-unsaturated sulfoxides, few reports have been published on the Michael reactivity of the α,β-γ,δ-diunsaturated sulfoxides¹. We present here the details of our investigation on the title sulfoxide 5 as a reagent for the synthesis of terpenoid polyenones.