Table 2. Substrate scope of aromatic ketones ^a .

^aGeneral reaction conditions: ketone (0.2 mmol, 1 equiv.) and N₂H₄·H₂O (0.75 equiv.) in CH₃CN (1 mL) were stirred under argon for 24 h under UV light (254 nm) irradiation at 25 °C; isolated yields were given.

^b1 equiv. of N₂H₄·H₂O was used.

^cA xenon light was used.

^dBenzene was used as the solvent.

^e2 equiv. of N₂H₄·H₂O were used.