Concomitant [2,3]-sigmatropic rearrangement of allylic sulfilimines and intramolecular N-alkylation. Synthesis of 2-vinyl substituted cyclic amines

Allylic phenyl and methyl sulfides bearing a strategically positioned electrophilic center have been shown to undergo concomitant [2,3]-sigmatropic rearrangement and intramolecular N-alkylation upon oxidative conversion to allylic sulfilimines and treatment with aqueous base. This one-pot transformation leads to the title class of compounds in good yield.