聚硅氧烷负载硫、氮-铂双齿配合物的合成及其对烯烃硅氢化的催化作用

POLYSILOXANE-SUPPORTED SULFIDE-AMINE-PLATINUM COMPLEX:SYNTHESIS AND ITS CATALYTIC ACTIVITY IN HYDROSILYLATION OF OLEFINS

γ-巯丙基三甲氧基硅烷与β-氯乙基二甲胺盐酸盐在甲醇钠存在下缩合,得到4-硫杂-6-二甲胺基己基三甲氧基硅烷。后者以气相法二氧化硅固载,再与氯亚铂酸钾反应,合成了二氧化硅固载的聚-4-硫杂-6-二甲胺基己基硅氧烷-铂配合物。它是烯烃硅氢加成的有效催化剂。

4-Thia-6-dimethylaminohexyltrimethoxysilane was synthesized by condensation of γ-mereaptopropyltrimethoxysilane and β-chloroethyldimethylamine hydrochloride in the presence of sodium methoxide. The new silicon monomer was subjected to hydrolysis and immobilization on fumed silica, followed by reaction with potassium chloroplatinite to give the title platinum complex. The complex was found to be an effective catalyst for the hydrosilylation of olefins with triethoxysilane.The influences of temperature, the amount of the complex used,and the kind of olefins on the catalytic activity were investigated.