摘要
硅氢化反应在有机硅化学和有机硅工业中占有重要地位。早期广泛使用氯铂酸异丙醇体系作为催化剂,70年代后开始用四(三苯膦)合铂、氯化三(三苯膦)合铑等均相络合催化剂,但相应的胂络合物的催化硅氢化的研究报道极少,迄今只看到四(三苯胂)合钯、二卤化二(三苯胂)合镍、氯化二(三苯胂)(羰基)合铑等个别报道,以及三苯胂作为氯铂酸助催化剂的报道。
The synthesis of a novel polymer-supported triphenylarsine platinum complex, poly-y-(m-diphenylarsinophenyl)propyl siloxane platinum complex, has been described. Potassium diphenylarsenide reacted with y-(m-chlorophenyl) propyltri-ethoxysilane to form γ-(m-diphenylarsinophenyl)propyltriethoxysilane,which was polymerized and immobilized on fumed silica by water to produce the arsenical polymer ligand. The reactions were all carried out under Ar atmosphere. The Titled complex was obrained by the reaction of arsenical polymer ligand with potassium chloroplatini e. The structure of the complex was characterized by elementary analysis and XPS. Six olefins, i.e.dodecene, decene, ω-chlorounde-cene, allyl benzene, allyl phenyl ether, and allyl glycidyl ether were used as probe to evaluate the catalytic activity of the titled complex. I! is found that the titled complex is an effective catalyst for the hydrosilylation of the above-mentioned olefins with triethoxysilane at 60-100℃, and can be reused several times wth gradual decrease in activity.
基金
国家自然科学基金
