Fig. 4: Scope of the vinyl sulfonyl fluorides and alkenes.

a4x (0.4 mmol), 2y (0.2 mmol), Ru(bpy)3Cl2 (1.5 mol%), DBU (0.7 mmol), CH3CN (2.0 mL), blue LED (5 W), RT, under N2 atmosphere. b4x (0.2 mmol), Ru(bpy)3Cl2 (1.5 mol%), DBU (0.7 mmol), CH3CN (2.0 mL), blue LED (5 W), RT, under N2 atmosphere.