论文部分内容阅读
以骨架手性原子簇合物为催化剂的不对称催化反应一直被认为是极富挑战性的课题,一旦实现,将是一种理论和概念上的突破.回顾原子簇合物的不对称性及不对称催化反应的进展,阐述了我们的目标和一些相关的问题.近期实验结果表明,氧原子转移试剂Me3NO·2H2O和PhIO可明显地促进异核金属羰基簇合物(μ3-S/Se)RuCo2(CO)9对1-己烯的催化氢化和异构化反应.催化剂的四面体簇核骨架在催化过程中保持不变.并提出了一种可能的缔合机理.甲醇溶液中最佳条件为氢压5.0-6.0MPa,温度60℃,[1-己烯]/[S/SeRuCo2(CO)9]为200(摩尔比),[Me3NO·2H2O]/[S/SeRuCo2(CO)9]为4-5(摩尔比).
Asymmetric catalysis with framework chiral atom clusters as catalyst has been considered as a very challenging subject. Once realized, it will be a theoretical and conceptual breakthrough. Reviewing the asymmetry of clusters and the progress of asymmetric catalysis, we set out our goals and some related issues. Recent experimental results show that oxygen atom transfer reagents Me3NO · 2H2O and PhIO can obviously promote the catalytic hydrogenation and isomerization of 1-hexene with the μC-Ru / RuCo2 (CO) 9 . The tetrahedral cluster core of the catalyst remains unchanged during the catalysis. And proposed a possible association mechanism. The optimal conditions of methanol solution were hydrogen pressure 5.0-6.0MPa, temperature 60 ℃, molar ratio of [1-hexene] / [S / SeRuCo2 (CO) 9], [Me3NO · 2H2O] / [S / SeRuCo2 (CO) 9] is 4-5 (molar ratio).