A simple and efficient synthesis of 2,- 3-, or 4-(2-nitrophenyl)pyridine derivatives via palladium catalyzed ullmann cross-coupling reaction
摘要:
The Ullmann cross-coupling reaction of halopyridines with 2-bromonitrobenzenes was successfully catalyzed by low valent palladium [Pd(PPh3)4, PdCl2(PPh3)2, PdCl2] to afford (2-nitrophenyl)pyridine derivatives in good to excellent yield.