Tetra- and Dinuclear Palladium Complexes Based on a Ligand of 2,8-Di-2-pyridinylanthyridine: Preparation, Characterization, and Catalytic Activity
作者:Shih-Chieh Aaron Lin、Bo-Kai Su、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu
DOI:10.1021/acs.organomet.1c00226
日期:2021.7.12
manipulation of stoichiometric ratio of ligand to metal precursor. The catalytic activity of these complexes for carbonylative Suzuki–Miyaura cross-coupling was investigated. Complex 2 shows an excellent catalytic activity on the reaction of aryl iodide with arylboronic acid in the presence of atmospheric pressure of CO to give the corresponding benzophenones.
的络合大号[大号= 5-苯基-2,8-二-2-吡啶基- anthyridine]与[将Pd(CH 3 CN)4 ](BF 4)2和[加入Pd(CH 3 CN)3 CL](BF 4 ) 以 1:2 的摩尔比呈现相应的双核配合物 [Pd 2 L (CH 3 CN) 4 ](BF 4 ) 4 ( 1 ) 和 [Pd 2 L (CH 3 CN) 2 Cl 2 ](BF 4 ) 2 ( 2), 分别。然而,用(COD)PdCl 2处理L,然后进行阴离子交换产生四核复合物[Pd 4 L 3 Cl 4 ](PF 6 ) 4 ( 4a )。这些配合物的结构由光谱学和 X 射线晶体学表征。通过操纵配体与金属前体的化学计量比来研究这三种配合物的相互转化。研究了这些配合物对羰基化 Suzuki-Miyaura 交叉偶联的催化活性。复合体2 在常压 CO 存在下,芳基碘与芳基硼酸反应生成相应的二苯甲酮显示出优异的催化活性。