Methyleneaziridines (MAs), a class of highly strained heterocycle derived aziridines bearing an exocyclic alkene group (Scheme 1), 2 have drawn less attention in organic synthesis than other three-membered rings. 3 Although the ring-opening couplings of MAs with strong electrophiles and organometallics have been studied, 4 the metal-catalyzed ring expansion reactions of MAs have been less investigated. Alper and co-workers reported a palladium-catalyzed ...
