Table 4. Copper-catalyzed oxidative C–H/N–H coupling of 1 and 2.
*Conditions: 1 (0.5 mmol), 2 (2.5 mmol), CuI (0.05 mmol), LiCl (1.0 mmol), DMA/Et3N = 2:1 (1.5 ml), 120°C, 15 hours, under O2 (1 atm). Isolated yields.
*Conditions: 1 (0.5 mmol), 2 (2.5 mmol), CuI (0.05 mmol), LiCl (1.0 mmol), DMA/Et3N = 2:1 (1.5 ml), 120°C, 15 hours, under O2 (1 atm). Isolated yields.