Synthesis of Secondary Aldimines from the Hydrogenative Cross-Coupling of Nitriles and Amines over Al<sub>2</sub>O<sub>3</sub>-Supported Ni Catalysts
作者:Peng Zhou、Liang Jiang、Shuguo Wang、Xun Hu、Hongming Wang、Ziliang Yuan、Zehui Zhang
DOI:10.1021/acscatal.9b01597
日期:2019.9.6
A heterogeneous Ni catalyst was discovered to be active in the synthesis of secondary cross-imines via hydrogenative coupling of nitriles and amines. The mesoporous Al2O3-supported Ni nanoparticles (abbreviated as Ni/m-Al2O3-600, where 600 represents the reduction temperature) were active in hydrogenative coupling of nitriles and amines reaction at 80 °C and 1 bar H2, affording corresponding cross-imines
发现一种非均质的Ni催化剂可通过腈和胺的加氢偶合而在次级交叉亚胺的合成中发挥作用。在80°C和1 bar H 2下,介孔的Al 2 O 3负载的Ni纳米颗粒(缩写为Ni / m-Al 2 O 3 -600,其中600表示还原温度)在腈和胺的氢化反应中具有活性。,提供相应的交叉亚胺,产率在64.1–98.1%的范围内。密度泛函理论计算表明,苯甲腈(PhCN)氢化为苄胺(PhCH 2 NH 2)的活化能比PhCN和RNH 2的氢化交叉偶联的活化能高。Ni / m-Al 2 O 3 -600催化剂上的反应,表明后者反应更有利。理论计算与我们的实验结果非常吻合。