Copper‐Catalyzed Diazidation of Allenes: Access to 3‐(Azidomethyl)‐2H‐Azirines

Abstract A class of 3‐(azidomethyl)‐2 H ‐azirine has been obtained through a copper‐catalyzed diazidation of allenes and a subsequent azirination involving vinyl azides. A variety of functional groups in the allenes are well tolerated, providing a series of 3‐(azidomethyl)‐2 H ‐azirine motifs in 51%‐93% yields (26 examples).