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有机硅聚合物负载硫醚与铂的配合物可作为烯烃硅氢加成的有效催化剂,但其中部分配合物的回收再用性能不太理想,合成亦比较繁琐。考虑到环硫乙烷中硫原子的未共用电子对远比一般硫醚中硫原子的未共用电子对更加暴露,有可能与过渡金属形成更稳定的配合物,从而减少催化过程中金属的流失,我们合成了气相法二氧化硅固载的聚-4-氧杂-6,7-环硫庚基硅氧烷铂配合物,研究了该配合物对烯烃硅氢加成反应的催化性能。本文报道所得到的一些结果。
Silicone polymer supported thioether and platinum complexes can be used as an effective catalyst for the hydrosilylation of alkenes, but some of them have poor recycling performance and are complicated to synthesize. Considering that the unshared electron pair of the sulfur atom in ethylene sulfide is more exposed than the unshared electron pair of the sulfur atom in the general thioether, it is possible to form a more stable complex with the transition metal and thereby reduce the loss of metal during the catalytic process , We synthesized the poly-4-oxa-6,7-epithio heptylsiloxane complexes supported by fumed silica and investigated the catalytic performance of the complexes for hydrosilylation of olefins. This article reports some of the results obtained.