Fig. 2

para-Selective C–H amination of N,N-dimethylaniline with different diarylamine derivatives. Reaction conditions: graphite rod anode (ϕ 6 mm), platinum plate cathode (15 mm × 15 mm × 0.3 mm), constant current = 7 mA (J_anode ≈ 7.8 mA cm⁻²), 1 (0.30 mmol), 2 (0.20 mmol), ⁿBu₄NBF₄ (0.15 mmol), MeCN/MeOH (7.0 mL/3.0 mL), room temperature, N₂, 2.0 h (2.6 F). Isolated yields were shown. ^aConstant current = 12 mA (J_anode ≈ 13.3 mA cm⁻²), HFIP/MeCN (5.0 mL/5.0 mL)