(Phosphinito)aryl benzimidazole PCN pincer palladium(II) complexes: Synthesis, characterization and catalytic activity in C H arylation of azoles with aryl iodides
作者:Cong Wang、Yang Li、Beibei Lu、Xin-Qi Hao、Jun-Fang Gong、Mao-Ping Song
DOI:10.1016/j.poly.2017.10.005
日期:2018.3
Abstract The PCN pincer Pd(II) complexes 4a–c with (phosphinito)aryl benzimidazole ligands were conveniently synthesized by one-pot phosphorylation/palladation reaction of a (2-benzimidazolyl)-containing m-phenol derivative 3. The three complexes were well characterized by spectroscopic methods, elemental analysis and their molecular structures were further determined by X-ray single-crystal diffraction
摘要通过一锅含(2-苯并咪唑基)间苯酚衍生物3的磷酸化/钯化反应,可方便地合成具有(膦基)芳基苯并咪唑配体的PCN夹心Pd(II)配合物4a–c。通过光谱方法表征,通过X射线单晶衍射进一步确定元素分析及其分子结构。每个复合物中的Pd(II)中心均采用典型的扭曲方形平面几何形状。在CuI作为助催化剂的情况下,配合物4a的负载量为0.25-0.5 mol%,可以有效地催化苯并噻唑,苯并恶唑和噻唑与各种芳基碘的CH芳基化反应。