Amine-Promoted Synthesis of Vinyl Aziridines

N-Unsubstituted vinyl aziridines were synthesized via an amine-promoted regioselective nucleophilic aziridination of alpha,beta,gamma,delta-unsaturated carbonyl compounds. The reaction is completely regioselective (> 95: 5) for the alpha,beta-alkene and completely diastereoselective, affording the trans-vinyl aziridine in moderate-to-good yields.