α-胺基取代苯并咪唑衍生物L1~L4与RuCl2(PPh3)3原位组成催化体系,催化苯乙酮与甲酸铵的还原胺化反应形成α-苯乙胺、N-(1-苯乙基)甲酰胺及α-苯乙醇.配体上大取代基及苯基取代基有利于提高催化剂的催化活性.在85℃时苯乙酮的还原胺化反应较快,在125℃时,苯乙酮的氢转移形成苯乙醇成为主要的反应.还原胺化反应的氢源及氨源为甲酸铵.提出了反应的可能机理. α-Amino-substituted benzimidazole derivatives L1 ~ L4 and RuCl2 (PPh3) 3 were synthesized in-situ to catalyze the reductive amination of acetophenone and ammonium formate to form α-phenylethylamine, N- Ethyl) formamide and α-phenylethanol.Large substituents on the ligand and phenyl substituents are helpful to improve the catalytic activity of the catalyst.At the reductive amination of acetophenone at 85 ℃, The conversion of acetophenone to phenylethyl alcohol is the main reaction, the hydrogen source and ammonia source of reductive amination reaction are ammonium formate, and the possible mechanism of the reaction is proposed.