Table 5. Decarboxylative Difluoromethylation of Aryl Propiolic Acids^a,^b.

^aReaction conditions: aryl propiolic acid 6 (0.2 mmol, 1.0 equiv), ethyl bromodifluoroacetate 2 (0.6 mmol, 3.0 equiv), fac-Ir(ppy)₃ (3 mol %), CsOAc (0.4 mmol, 2.0 equiv), H₂O(2 mmol, 10 equiv), 1,4-dioxane (1.0 mL), argon, blue LEDs (3.12 W), 24 h.

^bReported yields are those of isolated compounds.