Sigmatropic Isomerization Research Articles

Synthesis of αβ-unsaturated ketones via[2,3] sigmatropic rearrangement of γchloroallyl sulphoxides and amine oxides

When γ-chloroallyl sulphides and N-alkyl anilines are oxidized with m-chloropehbenzoic acid, the resultant S- and N-oxides rapidly undergo [2,3] sigmatropic isomerization to labile products that decompose internally with selective formation of conjugated enones.