Iron-Catalyzed Ligand-Free Diazidation of Alkenes Controlled by the Ratio of TBHP to TMSN3

An iron-catalyzed ligand-free diazidation of alkenes system has been established, providing straightforward access to vicinal diazides at room temperature with TMSN 3 as the azido source. And the ratio of TBHP to TMSN 3 was essential for the reaction.