酚羟基席夫碱钯配合物的合成、表征及其催化性能  

Palladium Complexes from Aminophenol Schiff Base-ligand:Synthesis,Characterization and Catalytic Activity

作　　者：郭丽娜 闫丽岗[1] 高媛媛[1] 韩利民[1] GUO Li-na;YAN Li-gang;GAO Yuan-yuan;HAN Li-min(Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, 010051,China)

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010051

出　　处：《合成化学》2021年第1期29-35,共7页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(21462029)。

摘　　要：以Na2PdCl4与(2-NC5H4)C(H)=N(C6H4OH-2)为原料在不同溶剂中合成了两个钯配合物Pd{2-(NC5H4)C(H)=N[2-(OH)C6H4]}Cl2(Complexe 1)和Pd{2-(NC5H4)C(H)=N[2-(O)C6H4]}Cl(Complexe 2)。X射线单晶衍射确定了配合物的分子结构,在配合物1和2中,氯离子的配位个数对所形成的配合物的四边形结构产生一定的影响。两种钯配合物的催化活性通过空气中在醇溶剂体系下4-碘甲苯和苯硼酸的Suzuki-Miyaura反应进行评价。结果显示:催化产物4-甲基联苯的产率可达98.72%和92.31%,副产物联苯的产率小于1.15%,进一步通过配合物的单晶结构数据分析了不同配位模式对催化活性的影响。Two palladium complexes[Pd{2-(NC5H4)C(H)=N[2-(OH)C6H4]}(Cl2)](Complexe 1)and[Pd{2-(NC5H4)C(H)=N[2-(O)C6H4]}(Cl)](Complexe 2)were synthesized by the reaction of Na2PdCl4 with(2-NC5H4)C(H)=N(C6H4OH-2)in different solvents.The molecular structures of Complexe 1 and Complexe 2 were characterized by single crystal X-ray diffraction,in complexe 1 and 2 the structure of square-planar palladium center was influenced by the number of chloride ions.Then,the catalytic activity of two complexes were evaluated through the Suzuki-Miyaura reaction of 4-iodotoluene and phenylboronic acid in air environment.The yields of the product 4-methylbiphenyl are up to 98.72%and 92.31%,the yields of the by-product biphenyl are less than 1.15%.Furthermore,the influence of the coordination model on the catalytic activity was investigated.

关 键 词：席夫碱 钯配合物 SUZUKI偶联反应 溶剂调控 合成 

分 类 号：O614.8[理学—无机化学] O643.3[理学—化学]