The development of protocols that afford difficult to synthesise N-alkylaziridines is a challenge yet to be addressed. 1 In this Communication we report that N-chloroamines can be used for the efficient synthesis of N-alkylaziridines. Our results demonstrate that, contrary to literature precedent, N-chloroamines are relatively stable, efficient, readily accessible starting materials that afford structurally diverse N-alkylaziridines that would, using conventional protocols, ...