Substrates scope with respect to aniline and alkynes^a,b.

^aReaction conditions: 1 (1.0 mmol), 2 (1.0 mmol), Rose Bengal (5 mol%), TBHP in decane (4.0 equiv.), 11 W CFL bulb, CH₃CN (1.5 mL), rt, for 48 h.

^bIsolated yields after silica-gel column chromatography.