【摘要】 [聚(苯乙烯)联吡啶]钯(o)是一种高分子负载的加氢催化剂,本文用紫外—可见漫反射光谱、光电子能谱和电子显微镜对其进行了表征,探索了它在芳基碘化物的乙烯基化反应中的应用,发现它的催化活性可与均相催化剂相比,并在三次使用中无明显降低。用这种催化剂合成了一系列取代二苯乙烯、取代肉桂酸和肉桂酸甲酯。更多还原

【Abstract】 [Poly ( styryl ) bipyridine]palladium ( 0 ), a polymer bound hydrogena-tion catalyst, was characterized by DRS, ESCA and electron microscopy. This material was used as catalyst for the vinylation of aryl iodides.It was found that the catalytic activity is comparable to that of the homogeneous catalyst and is not remarkably lowered on being used three times. With this catalyst a series of substituted stilbenes, cinnamic acids and methyl cimnamates was prepared in high yields.更多还原