双膦配合物RuCl_2(dppe)(NH_2CH_2CH_2NH_2)的合成及催化性能研究

Preparation of ruthenium diphosphine complex RuCl_2(dppe)(NH_2CH_2CH_2NH_2) and its catalytic properties in hydrogenation of acetophenone

合成了双膦配合物RuCl2(dppe)(NH2CH2CH2NH2)[dppe=1,2-二(二苯膦基)乙烷]。考察了此配合物对苯乙酮及其衍生物加氢反应的催化性能,并对各种反应参数变化对加氢反应的影响进行了详细的研究。结果表明,此配合物对苯乙酮的加氢反应具有良好的催化活性,在苯乙酮/(CH3)3COK/配合物的摩尔比为5000:40:1、氢气压力为3 MPa的条件下,于70℃反应5 h,苯乙酮的转化率可达到99.6%。

A rutherdum-diphosphine complex RuCI2 （dppe） （ NH2 CH2 CH2 NH2 ） （ 1 ） （dppe = bis-（ diphenyl- phesphino） ethane） was synthesized and characterized by lH NMR and 31p NMR. As catalyst precursor, the catalytic performance of complex 1 was investigated for the hydrogenation of aeetophnone in 2-propanol containing （CH3 ）3COK. The effect of various factors, such as reaction temperature （40-90℃）, hydrogen pressure （ 1-4 MPa） and molar ratio of （ CH3 ） 3 COK to Catalyst （ 10：1-200：1 ） on the hydrogenation of aeetophenone were studied. At the optimum conditions, S/C/（ CH3 ）3COK =5000：1：40, 70 ℃, the conversion of acetophenone hydrogenation attained 99. 6% in 5 h.