新型烷氧基修饰的手性SalenMn（Ⅲ）固载催化剂的合成及其在非功能化烯烃不对称环氧化反应中的应用

摘要

New types of supported catalysts were obtained by anchoring chiral salen Mn（III） complex on a series of alkoxyl-modified zirconium poly（styrene-phenylvinyl phosphonate）-phosphate（ZPS-PVPA） in the text.All the prepared catalysts were characterized by FT-IR,UV-vis,XPS,SEM,TG and elemental analysis.The catalytic capabilities were investigated with m-CPBA as an oxidant and with indene and α-methylstyrene as substrates for asymmetric epoxidation of unfunctionalized olefins.Contrary to most of the literatures reported,the results showed that the heterogeneous catalysts 3a～3f exhibited excellent cata-lytic activities,and their conversions and ee values increased remarkably in the absent of N-methyl-morpholine N-oxide（NMO） under the same catalytic conditions.Futhermore,these catalysts were easily separated and reused ten times without significant loss of activities.%合成了一系列以有机聚合物-无机杂化材料聚（苯乙烯-苯乙烯基膦酸）-磷酸氢锆（ZPS-PVPA）为载体,烷氧基为连接基团的新型固载手性Salen Mn（III）催化剂,并运用FT-IR,UV-vis,XPS,SEM,TG,元素分析等手段对其进行了表征.以m-CPBA为氧化剂,茚和α-甲基苯乙烯为底物,考察了催化剂对非功能化烯烃不对称环氧化反应的催化性能.结果表明,在相同的催化反应条件下,固载手性Salen Mn（III）催化剂3a～3f在不加轴向配体N-甲基吗啉氮氧化物（NMO）时显示出了优良的催化活性,其