Fig. 4: Scope of propiolamides in the trifluoromethyl-arylation reaction.

Reaction conditions: 1 (0.2 mmol), CF3SO2Na (0.4 mmol, 2.0 equiv), 4CzIPN (2 mol%), K2CO3 (0.3 mmol, 1.5 equiv), DMSO (2 mL), 40 W blue LEDs, N2, rt, 24 h.
Reaction conditions: 1 (0.2 mmol), CF3SO2Na (0.4 mmol, 2.0 equiv), 4CzIPN (2 mol%), K2CO3 (0.3 mmol, 1.5 equiv), DMSO (2 mL), 40 W blue LEDs, N2, rt, 24 h.