摘要
以MCM-41分子筛作为固载材料,经氨基功能化后与各种钯化合物形成一系列MCM-41载钯配合物,采用XRD,XPS等技术对其结构及表面性能进行了表征,研究了催化剂的制备条件等因素对催化Heck芳基化反应性能的影响;以共轭烯烃和各种芳基碘的Heck芳基化反应考察了MCM～NH2·Pd(0,Ⅱ)配合物的催化性能.结果表明,MCM-41的结构没有被破坏,MCM～NH2载钯配合物具有较高的催化活性和立体选择性,在较低的温度(70～90℃)下,可高产率地生成一系列取代的反式产物.
Using MCM-41 as supporter, a series of MCM-41 supported amino-palladium complexes have been prepared and characterized by XRD, XPS, etc. The XRD and XPS results indicate that the Pd coordinates with the NH2 groups on the MCM-41 surface, and the structure of MCM-41 has been not damaged. Its catalytic performance for Heck arylation of alkene with aryl iodide shows that the catalyst has high activity and stereoselectivity in 70-90 ℃. The product of Heck reaction takes E form. And the effect of the preparation condition of the catalyst on the catalytic performance was examined.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2008年第5期825-831,共7页
Chinese Journal of Organic Chemistry
基金
浙江省自然科学基金(No.296064)资助项目
