聚醚桥连二异羟肟酸双核锰(Ⅲ)配合物催化苯乙烯环氧化性能研究

Studies on the synthesis and catalytic performance in styrene epoxidation by manganese(Ⅱ)polyether-bridged dihydroxamates

以一系列的聚醚桥连二异羟肟酸作配体,制备了金属锰(Ⅲ)配合物。以苯乙烯环氧化作模型反应,研究了Mn2L21Cl2～Mn2L27Cl2在温和条件下的催化氧化性能;考察了反应温度、催化剂用量、轴配体、苯乙烯浓度以及双核锰配合物的配体中桥链长度、刚柔性、氧杂原子及其构筑的冠环结构对环氧化反应的影响。

A series of manganese(Ⅲ)polyether-bridged dihydroxamates Mn_2L_2~1Cl_2～Mn_2L_2~7Cl_2 were prepared and employed to the catalytic epoxidation of styrene under a mild reaction condition.The influences of reaction temperature,catalyst amount,axial ligand,concentration of styrene as well as the length,rigidity and flexibility of the linkers were investigated.