It has been shown that the isomerization of 1-(arylthiocarbony1) aziridines to 2-(arylthioalkyl) isocyanates is catalyzed by triethylamine or thiophenolate ion and may occur under relatively mild conditions (25-77'). 1-(Arylthiocarbonyl)-2-methylaziridines rearranged to their isomeric isocyanates by selective ring fission at the unsubstituted aziridine ring carbon, thus indicating the SN2 character of these rearrangements. Kinetic experiments have shown ...
