Intramolecular bromine-catalyzed aziridination: a new direct access to cyclic sulfonamides

摘要

N-Chloraine salts of #omega#-unsaturated sulfonamides have been prepared and shown to react in an intramolecular fashion in the presence of a catalytic amount of phenyltrimethylammlonium tribomide to yield bicyclic azirdines. This intramolecular bromine-catalyzed aziridination procedure gave results complementary to those obtained by the copper-catalyzed methodology based on iminophenyliodinane.