【摘 要】
：
制备了二胺和二酚修饰的晶态有机聚合物-无机杂化载体低聚苯乙烯基膦酸-膦酸氢锆(LCZSPP)轴向固载手性Salen Mn(Ⅲ)催化剂,将其应用于非官能烯烃的多相不对称环氧化反应.研究
【机 构】
：
西南大学化学化工学院,重庆教育学院生物化学工程系
论文部分内容阅读
制备了二胺和二酚修饰的晶态有机聚合物-无机杂化载体低聚苯乙烯基膦酸-膦酸氢锆(LCZSPP)轴向固载手性Salen Mn(Ⅲ)催化剂,将其应用于非官能烯烃的多相不对称环氧化反应.研究了两类轴向连接基团及助催化剂在催化不对称环氧化反应中的影响.结果表明,通过二胺为链接基团固载的催化剂在加入轴向助剂(NMO)的情况下,转化率和对映选择性都有较大提高.然而,与文献报道相反,二酚固载的催化剂在不添加轴向助剂的情况下,转化率和对映选择性都比添加轴向助剂有明显提高.此外,制备的固载催化剂可以很容易从反应体系中分离出来,并且在重复使用10次以上后,催化活性和对映选择性都没有明显的降低.
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