有机硅聚合物负载硫、膦混合双齿钯配合物的合成与催化性能  

Synthesis and Catalytic Property of a Silica-Supported Sulfur, Phosphine Mixed Bidentate Palladium Complex

作　　者：胡荣华[1] 夏俊[1] 蔡明中[1] 

机构地区：[1]江西师范大学化学学院

出　　处：《应用化学》2003年第3期254-257,共4页Chinese Journal of Applied Chemistry

基　　金：江西省自然科学基金资助项目 ( 0 10 314 )

摘　　要：通过聚 4 硫杂 6 二苯膦己基硅氧烷配体和氯化钯于 60℃在丙酮中反应 72h ,合成了二氧化硅固载的聚 4 硫杂 6 二苯膦己基硅氧烷钯配合物 ,并用元素分析、X射线光电子能谱 (XPS)对其结构进行了表征。研究结果表明 ,催化量的标题钯配合物对芳基卤化物的Heck羰基化反应在常压下都有较高反应活性 ,而且芳基碘化物的反应活性明显高于相应的芳基溴化物。该负载型钯催化剂可回收再用多次 。A fumed silica-supported sulfur, phosphine mixed bidentate palladium complex(' Si'-S,P-Pd) has been synthesized by reaction of poly-4-thia-6-diphenylpho sphinohexylsiloxane('Si'-S,P) with palladium chloride in acetone at 60 ℃ for 72 h and characterized by elemental analysis and X-ray photoelectron spectrome try. A possible structure pattern of the polymeric palladium complex has been pr oposed. The results show that in the presence of a catalytic amount of the title complex the amidation and the butoxycarbonylation of aryl halides under atmosph eric pressure of carbon monoxide(Heck carbonylation) proceed smoothly to give th e corresponding substituted N-phenylbenzamides and butyl benzoates in good yields. The reactivities of aryl iodides are obviously higher than t hat of corresponding aryl bromides. The polymeric palladium catalyst can be rege nerated and reused without serious loss of its activity.

关 键 词：有机硅聚合物 负载型钯催化剂 混合双齿高分子配体 合成 催化性能 Heck羰基化 芳基卤化物 

分 类 号：O643.36[理学—物理化学]