Phosphines with N‐Heterocyclic Boryl‐Substituents: Ligands for Coordination Chemistry and Catalysis
作者:Manuel Kaaz、Ralf J. C. Locke、Luisa Merz、Mathis Benedikter、Simon König、Johannes Bender、Simon H. Schlindwein、Martin Nieger、Dietrich Gudat
DOI:10.1002/ejic.201801081
日期:2019.3.31
Boryl‐substituted phosphines NHB–P(R)Ph (R = H, Ph, NHB = N‐heterocyclic boryl substituent) react with Fe2(CO)9 to give isolable Fe(CO)4 complexes, two of which were characterized by single‐crystal XRD studies. The electronic and steric properties for a series of the boryl phosphines were further assessed by evaluation of TEPs for in‐situ formed complexes [RhCl(NHB–PR1R2)(CO)2] (R1, R2 = H, Ph, Me
硼基取代的膦NHB–P(R)Ph(R = H,Ph,NHB = N-杂环硼基取代基)与Fe 2(CO)9反应生成可分离的Fe(CO)4复合物,其中两个的特征是单晶XRD研究。通过评估原位形成的配合物[RhCl(NHB–PR 1 R 2)(CO)2 ](R 1,R 2 = H,Ph ,Me,NMe 2)以及Fe(CO)4的埋藏体积计算复合体。结果表明,NHB-膦由于其构象柔韧性而显示出其空间体积中的一些可变性,并且一些标本可能表现出与t Bu 3 P相似的电子释放能力和空间需求。研究溴苯与2,6的胺化反应二异丙基苯胺证实了这些性质可用于促进Pd催化的C–N交叉偶联反应,并且在辅助膦中用NHB取代基正式取代苯基对催化剂性能具有有益的影响。