聚-ω-(甲硒基)十一烷基硅氧烷钯(0)配合物的合成与催化性能  

Synthesis and Catalytic Characteristics of a Silica-Supported Poly-ω-(methylseleno)undecylsiloxane Palladium(0) Complex

作　　者：刘刚[1,2] 章荣立[1] 蔡明中[1] 

机构地区：[1]江西师范大学化学化工学院 [2]江西科技师范学院化学系南昌330013

出　　处：《有机化学》2006年第2期215-218,共4页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(No.20462002)资助项目.

摘　　要：ω-氯代十一烷基三乙氧基硅烷依次用气相法二氧化硅固载、与甲硒基钠和氯化钯作用,再用水合肼还原,合成了气相法二氧化硅负载的聚-ω-(甲硒基)十一烷基硅氧烷钯(0)配合物.该钯(0)配合物对丙烯腈和丙烯酸与芳基碘的Heck芳基化反应具有很高的催化活性,为各种肉桂腈和肉桂酸的立体选择合成提供了方便实用的新途径.A simple and practical synthetic method for the cinnamonitriles and cinnamic acids was pre- sented. A silica-supported poly-w-（methylseleno）undecylsiloxane palladium（O） complex has been prepared from co-chloroundecyltriethoxysilane via immobilization on fumed silica, followed by reaction with sodium methylselenolate in ethanol and palladium chloride in acetone, and then reduction with hydrazine hydrate in ethanol. The title complex was a highly active and stereoselective catalyst for arylation of acrylonitrile and acrylic acid with aryl iodides, and could be recovered and reused.

关 键 词：负载型钯催化剂 硒钯(0)配合物 Heck芳基化 肉桂腈 肉桂酸 立体选择合成 氯化钯 配合物 硅氧烷 催化性能 烷基 

分 类 号：O634.41[理学—高分子化学] O643.32[理学—化学]