杯芳烃化金属卟啉及其苯乙烯环氧化的催化性能(英文)  

Calixarened Metalloporphyrins and Their Catalytic Performance in Epoxidation of Styrene

作　　者：袁立华[1] 陈淑华 赵华明[1] 宁永成[2] 袁浩丹 

机构地区：[1]四川联合大学化学系 [2]清华大学化学系

出　　处：《分子催化》1997年第4期283-296,共14页Journal of Molecular Catalysis(China)

摘　　要：将单功能化四苯基卟啉与对叔丁基杯［４］芳烃通过单链相连，随后插入金属离子，合成了杯芳烃化金属卟啉１－３．在两相条件下对苯乙烯环氧化催化反应研究表明，化合物２的锰络合物中杯芳烃的存在对氧化反应有明显影响．可以根据连接于卟啉分子中憎水杯芳烃造成催化活性中心微环境差异来解释观察到的现象．各杯芳烃化锰卟啉的催化性能按以下次序降低：１ｂ＞２ｂ＞３ｂ－７．The calixarened metalloporphyrins 1-3 were synthesized by linking monofunctionalized tetraaryl porphyrin to p tert butyl calixarene via a single flexible chain, followed by inserting metal ions. Catalytic study in two phase condition on epoxidation of styrene demonstrated that the presence of calixarene moiety in the manganese(Ⅲ) complex of 2 apparently affected the oxidation reaction. Such phenomenon can be rationalized in terms of the microenviromental difference stemmed from hydrophobic calixarene appended to the porphyrin molecule. The catalytic efficiency of the calixarened manganese(Ⅲ) porphyrins decreased in the following order: 1b>2b>3b-7.

关 键 词：杯芳烃 金属卟啉 催化 环氧化 苯乙烯 

分 类 号：O643.32[理学—物理化学] O621.9[理学—化学]