Regioselective Synthesis of Unsymmetrical Vicinal Diamines via Azidoimination of Alkenes with TMSN 3 and Ketimines.

2-Azidoimines are versatile precursors to value-added vicinal unsymmetrical diamines, which are among the most common motifs in biologically active compounds. Herein, we report their operationally simple synthesis through a highly regioselective intermolecular azidoamination of olefins under metal-free conditions. The approach proceeded through azide and iminyl, two differentiated N -centered radicals. The synthetic potential of the protocols was further established via the condensation/amination sequential cascade and chemoselective, orthogonal transformations to access vicinal primary diamines.