Facile preparation of vinylaziridines by the reaction of N-sulfonylimines and cinnamyl bromide mediated by a catalytic amount of dimethyl sulfide

β-Phenylvinylaziridines are prepared in moderate to good yields from the reaction of N-sulfonylimines and cinnamyl bromide mediated by a catalytic amount of dimethyl sulfide in the presence of solid K2CO3 in acetonitrile at ambient temperature.