Figure 3.

Substrate scope. Reaction conditions: olefin (0.20 mmol), NaN₃ (0.60 mmol), FeCl₃·6H₂O (0.30 mmol) in PhCF₃ (1.0 mL), irradiation in 350 W photoreactor at 0 °C for 16 h. dr determined by ¹H NMR of the unpurified reaction mixture. ^aCarried out on 2.0 mmol scale with a 40 W blue LED Kessil light at rt. ^bYield obtained by ¹H NMR with mesitylene as internal standard. ^c8 h reaction time.