Application of Pd(II) Complexes with Pyridines as Catalysts for the Reduction of Aromatic Nitro Compounds by CO/H<sub>2</sub>O
作者:Agnieszka Krogul、Grzegorz Litwinienko
DOI:10.1021/acs.oprd.5b00273
日期:2015.12.18
undertaken to minimize the cost of large-scale conversion of aromatic nitro compounds to amines. Toward this end, application of CO/H2O as a reducing agent instead of molecular hydrogen seems to be a promising method, and the process can be catalyzed by Pd(II) complexes. In this work, the catalytic activity of square planar complexes of general structure PdCl2(XnPy)2 (where XnPy = pyridine derivative) was
为了使芳香族硝基化合物大规模转化为胺的成本最小化,已经进行了许多努力。为此,使用CO / H 2 O作为还原剂代替分子氢似乎是一种有前途的方法,并且该过程可以由Pd(II)配合物催化。在这项工作中,研究了具有一般结构PdCl 2(X n Py)2(其中X n Py =吡啶衍生物)的方形平面配合物的催化活性。尤其要注意X n Py(配体)的芳环和要还原的硝基化合物(YC 6 H 4 NO 2)中取代基的作用)。在YC 6 H 4 NO 2的芳香环中引入吸电子Y会提高转化率,这表明该过程的动力学类似于在不存在水的情况下用CO羰基合成硝基苯氮烯的过程(见J. Mol 。CATAL A:化学2011,337,9-16)。令人惊讶地,吸电子取代基掺入X n Py配体的芳环中也增加了YC 6 H 4 NO 2的转化率(与YC 6 H 4 NO 2底物的结构无关)。