聚-4-氧杂-6,7-双二苯膦基庚基硅氧烷铑配合物的合成及其催化硅氢化性能

Synthesis of Poly-4-oxa-6,7-bis(diphenylphosphino) heptyl Siloxanc Rhodium Complex and Its Catalytic Hydrosilylation Behavior

4-氧杂-6,7-二氯庚基三甲氧基硅烷依次与二苯膦钾、气相法二氧化硅、三氯化铑作用,合成了聚-4-氧杂-6,7-双二苯膦基庚基硅氧烷铑配合物。它对烯烃与取代烯烃的硅氢化反应具有良好的催化活性。

Poly-4-oxa-6,7-bis(diphenylphosphino)heptyl siloxane rhodium complex was synthesized from 4-oxa-6,7-dichloroheptene-1 via hydrosilylation with trimethoxysilane in the presence of tetrakis (triphenylphosphine)platinum complex as the catalyst, phosphatization with potassium diphenylphos-phide, sequentially, followed by immobilization on fumed silica and then the reaction with rhodium chloride. It exhibited good catalytic activity for the hydrosilylation of olefins, such as decene, do-decene, w-chloroundecene, phenyl allyl ether, allyl benzene, allyl glycidyl ether, styrene, and methyl methacrylate, etc. , with triethoxysilane at 90℃. A possible structure pattern of this silicone-supported bidentate phosphine rhodium complex has been suggested.