摘要
γ-(β-氰乙硫基)丙基三乙氧基硅烷依次用气相法二氧化硅固载,与氯化钯反应,然后用水合肼还原,合成了二氧化硅负载的聚γ-(β-氰乙硫基)丙基硅氧烷钯(O)配合物。研究了其催化共轭烯烃Heck芳基化反应的性能。
A fume silica - supported poly -r - B - cyanoethylsulfenyl) propylsiloxane palladium (0) complex was synthesized from r - B - cyanoethylsulfenyl) propyltriethoxysilane and fume silica via
hydrolysis,followed by treatment with palladium chloride in acetone and then the reduction with hydrazine hydrate in ethanol.The complex was characterized by elemental analysis and XPS.The title complex is an efficient catalyst for Heck arylation of styrene and acrylic acid with aryl iodides/Phis polymeric palladium (0) catalyst is stable to air and can be reused without noticeable loss of activity. Hence this paper presents a simple and practical stereo - selective synthetic method for unsymmetrical trans - stilbenes and substituted trans - cinnamic acids.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
1999年第4期395-400,共6页
Chinese Journal of Organic Chemistry
基金
江西省跨世纪人才基金
自然科学基金
关键词
钯催化剂
氰乙硫基
钯配合物
芳基化
HECK
supported palladium catalyst, functional polysiloxane, cyanoethylsulfenyl ligand palladium complex,Heck arylation,stereo - selective synthesis
