Fig. 3: Substrate scope of nitrobenzene derivatives 2 a, b, c, d.

a Reaction conditions A: 1 (0.5 mmol), 2 (4.0 equiv.), tBuONa (3.0 equiv.), DMSO (3.0 mL), O2 (1.0 atm) and the reaction was conducted at 40 °C. b Reaction conditions B: 1 (0.5 mmol), 2 (3.0 equiv.), tBuOK (4.0 equiv.), DMF (5.0 mL), O2 (1.0 atm) and the reaction was conducted at -30 °C. c Reaction conditions C: 1a-1 (0.2 mmol), 2 (4.0 equiv.), tBuONa (6.0 equiv.), DMSO (3.0 mL), O2 (1.0 atm) and the reaction was conducted at 40 °C. d Isolated yield.