邻菲啰啉二氧钼(Ⅵ)配合物合成及催化环氧化性能  

Synthesis and catalytic epoxidation activity of 1,10-phenanthroline dioxomolybdenum (Ⅵ) complex

作　　者：柴凤兰[1] 蔡庄红[1] 李敬[1] 董玉涛[1] 王向宇[2] 

机构地区：[1]河南化工职业学院,河南郑州450042 [2]郑州大学化学系,河南郑州450052

出　　处：《化学研究与应用》2017年第5期592-598,共7页Chemical Research and Application

基　　金：河南省高等学校自然科学研究计划基金项目(2011A150009)资助

摘　　要：通过邻菲啰啉分别与乙酰丙酮钼和二氯氧钼反应,合成了两个邻菲啰啉二氧钼(Ⅵ)配合物,并通过红外光谱、氢核磁共振谱、元素分析和紫外可见光谱方法表征。以1,2-二氯乙烷为溶剂、叔丁基过氧化氢为氧化剂探讨了邻菲啰啉钼(Ⅵ)配合物催化环氧化性能,结果表明,邻菲啰啉钼(Ⅵ)配合物具有很好的催化环氧化性能。在优化实验条件下,环氧化产物的选择性大于95%,底物的转化率均大于82%。烯键的催化环氧化活性顺序为:1-甲基环己烯>1-己烯>环己烯>α-甲基苯乙烯>4-氯苯乙烯>苯乙烯>α,β-不饱和羧酸酯。催化剂重复利用5次,催化活性基本保持稳定。1, 10-Phenanthroline dioxomolybdenum （ VI） complexes were synthesized by the reaction of 1, 10-Phenanthroline with MoO 2（acac）2 and MoO 2Cl2（THF） 2 ,which were characterized by IR,1 HNMR,element analysis and UV - Vis spectrum, respectively. The complexes were evaluated as catalyst for the epoxidation using tert-butylhydroperoxide（TBHP） as oxidant and 1, 2-dichloro- ethane as solvent. The results showed that the complexes had an excellent catalytic epoxidation. Under the optimal experiment condi-tions, the selectivity of epoxides was more than 95% ;the substrate conversion was higher than 82% . The order of catalytic epoxida-tion activity was as follows： 1-methylcyclohexene〉1-hexene〉cyclohexene〉a-methylstyrene〉4-chlorostyrene〉styrene〉a,, -unsaturat- ed carboxylic ester. The catalytic activity was maintained after 5 reuses.

关 键 词：邻菲啰啉 钼 配合物 环氧化 

分 类 号：O643.3[理学—物理化学]