A practical synthesis of unsymmetrical triarylphosphines by heterogeneous palladium(0)-catalyzed cross-coupling of aryl iodides with diphenylphosphine
作者:Zhaotao Xu、Pingping Wang、Qiurong Chen、Mingzhong Cai
DOI:10.1016/j.jorganchem.2018.04.018
日期:2018.7
The heterogeneous cross-coupling reaction of aryl iodides with diphenylphosphine was achieved in DMAc at 130 °C in the presence of 1.0 mol% of MCM-41-supported tridentate nitrogen palladium(0) complex [MCM-41-3N-Pd(0)] with KOAc as base, yielding a variety of unsymmetrical triarylphosphines in good to excellent yields. The turnover frequency (TOF) of the catalyst can reach 30.67 h−1. This new heterogeneous
在1.0 mol%MCM-41负载的三齿氮钯(0)络合物[MCM-41-3N-Pd(0)用KOAc作为碱,可产生各种不对称的三芳基膦,收率良好至极佳。催化剂的周转频率(TOF)可以达到30.67h -1。这种新的多相钯(0)催化剂可以通过简单的方法轻松地从市售试剂中制备,并显示出与均相Pd(OAc)2或Pd(PPh 3)4相同的催化活性。可以通过过滤反应溶液进行回收,并循环至少七次而不会显着降低催化活性。