elevated-temperature conditions, allowing its recovery after reaction completion and recycling. The application of air- and moisture-stable dinuclear palladium(I) complex [Pd(μ-I)(Pt-Bu3)]2 as an efficient catalyst for the Heck cross-coupling reaction of aryl iodides and bromides with acrylates and styrenes is described. The developed protocol is robust and operationally simple and shows a high functional-group
摘要 空气和水分稳定的双核钯(I)配合物[Pd(μ-I)(P t -Bu 3)] 2作为芳基碘化物和溴化物与丙烯酸酯和丙烯酸的Heck交叉偶联反应的有效催化剂的应用。描述了苯乙烯。所开发的协议功能强大且操作简单,并且具有很高的功能组容限。所使用的钯(I)二聚体催化剂在这些亲核以及高温条件下具有很高的耐用性,可以在反应完成并循环使用后回收。 空气和水分稳定的双核钯(I)配合物[Pd(μ-I)(P t -Bu 3)] 2作为芳基碘化物和溴化物与丙烯酸酯和丙烯酸的Heck交叉偶联反应的有效催化剂的应用。描述了苯乙烯。所开发的协议功能强大且操作简单,并且具有很高的功能组容限。所使用的钯(I)二聚体催化剂在这些亲核以及高温条件下具有很高的耐用性,可以在反应完成并循环使用后回收。
Ce0·98Pd0·02O2-δ: Recyclable, ligand free palladium(II) catalyst for Heck reaction
作者:S R SANJAYKUMAR、BHASKAR DEVU MUKRI、SATISH PATIL、GIRIDHAR MADRAS、M S HEGDE
DOI:10.1007/s12039-011-0103-6
日期:2011.1
Palladium substituted in cerium dioxide in the form of a solid solution, Ce0·98 Pd0·02 O1·98 is a new heterogeneous catalyst which exhibits high activity and 100% trans-selectivity for the Heck reactions of aryl bromides including heteroaryls with olefins. The catalytic reactions work without any ligand. Nano-crystalline Ce0·98 Pd0·02 O1·98 is prepared by solution combustion method and Pd is in +2 state. The catalyst can be separated, recovered and reused without significant loss in activity.