Table 1. Optimization for the photoexcited ketone-catalyzed C–H imidation of arenes ^{a , b} .

^aReactions were carried out on a 0.1 mmol scale with 2 (1.0 equiv.) and 1a (10.0 equiv.) under light irradiation (1500 W m^–2).

^bThe conversions were determined through ¹H-NMR analysis of the crude reaction mixture.

^c10 mol% of XI was used and isolated yields are indicated (o/m/p = >0.1 : 2.6 : 1.0).