申请人:Che Chi-Ming
公开号:US20110009617A1
公开(公告)日:2011-01-13
Ruthenium nanoparticles supported on non-cross-linked soluble polystyrene were prepared by reacting [RuCl
2
(C
6
H
5
CO
2
Et)]
2
with polystyrene in open air. They effectively catalyze intra- and intermolecular carbenoid insertion into C—H and N—H bonds, alkene cyclopropanation, and ammonium ylide/[2,3]-sigmatropic rearrangement reactions. This supported ruthenium catalyst is much more reactive than [RuCl
2
(p-cymene)]
2
and Ru(Por)CO] for catalytic intermolecular carbenoid C—H bond insertion into saturated alkanes. By using a-diazoacetamide as a substrate for intramolecular carbenoid C—H insertion, the supported ruthenium catalyst can be to recovered and reused for ten successive iterations without significant loss of activity.
支持非交联可溶聚苯乙烯的钌纳米颗粒是通过在开放空气中将[RuCl2(C6H5CO2Et)]2与聚苯乙烯反应制备的。它们有效地催化分子内和分子间碳氢和氮氢键的插入,烯烃环丙烷化,以及铵基叶烯/[2,3]-迁移重排反应。这种支持的钌催化剂比[RuCl2(p-cymene)]2和Ru(Por)CO]更具反应性,用于催化分子间碳氢键插入饱和烷烃。通过使用α-重氮乙酰胺作为分子内碳氢插入的底物,支持的钌催化剂可以在十次连续迭代中被回收和重复使用,而且活性几乎没有明显损失。