Reactions of β‐heteroatom substituted α,β‐unsaturated ketones with dimethylsulfonium methylide

β‐Alkoxy‐ and β‐alkylthio α,β‐unsaturated ketones react with dimethylsulfonium methylide (DMSM) to give a furan, while β‐anilino α,β‐unsaturated ketones give the pyrrole. β,β‐Bis(alkylthio) α,β‐unsaturated ketones react with DMSM to afford the methylene inserted products, λ,λ‐bis(alkylthio) β,λ‐unsaturated ketones.