双二茂铁基醛亚胺钼(VI)配合物的合成及催化性能  

Synthesis and Catalytic Activity of Bis(ferrocenylcarbaldimine) Dioxomolybdenum(VI) Complex

作　　者：柴凤兰[1] 王向宇[1] 张晓蓉[1] 陶京朝[1] 

机构地区：[1]郑州大学化学系,河南郑州450052

出　　处：《分子催化》2009年第5期422-428,共7页Journal of Molecular Catalysis(China)

基　　金：河南省杰出人才创新基金的资助项目(0221001200)

摘　　要：通过二茂铁甲醛与丙二胺反应得到双二茂铁基醛亚胺配体N1,N3-双二茂铁亚甲基丙烷-1,3-二胺(Fc-MP),FcMP与MoO2Cl2(THF)2的四氢呋喃溶液作用,合成了双二茂铁基醛亚胺钼(VI)配合物.以配合物为催化剂,叔丁基过氧化氢为氧化剂,分别以苯乙烯和环己烯为底物,考察了温度、时间、催化剂量及溶剂对于烯烃均相环氧化反应的催化性能的影响.结果表明,在最优实验条件下,反应12h,环己烯的转化率为88%,环氧环己烷的选择性为98%;苯乙烯的转化率为84%,氧化苯乙烯的选择性为76%.催化剂经简单分离可回收使用,且催化活性基本保持不变.同时对环氧化反应的机理进行了初步探讨.A dioxomolybdenum （VI） complex bearing the bis （ferrocenylcarbaldimine） ligand was synthesized by the reaction of N1, N3-bis （ ferrocenylmethylidene ） propane-1,3-diamine （FcMP） with MoO2 C12 （THF） 2 in THF. The complex was evaluated as catalyst for the homogeneous epoxidation of cyclohexene and styrene using tert-butylhydroperoxide （TBHP） as oxidant. The influences of temperature, time, catalyst amount and solvent on olefin epoxidation are farther studied, respectively. The catalytic activity of the recovered complex remains. When reaction was run at the optimal experimental conditions for 12 h, the conversion of cyclohexene and styrene was respectively up to 88% and 84% , and selectivity of cyclohexene oxide and styrene oxide respectively reached 98% and 76%. Meanwhile, the possible reaction mechanism steps were outlined.

关 键 词：二茂铁基 二氧化钼 亚胺 环氧化 

分 类 号：O643.3[理学—物理化学]