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
An efficient heterogeneous cross-coupling of aryl iodides with diphenylphosphine catalyzed by copper (I) immobilized in MCM-41
作者:Zhiqiang Fang、Mingzhong Cai、Yang Lin、Hong Zhao
DOI:10.1002/aoc.4417
日期:2018.8
The heterogeneous cross‐coupling reaction of aryl iodides with diphenylphosphine was achieved in toluene at 115 °C in the presence of 10 mol% of phenanthroline‐functionalized MCM‐41‐supported copper (I) complex (Phen‐MCM‐41‐CuI) with Cs2CO3 as base, yielding various unsymmetric triarylphosphines in good to excellent yields. This protocol can tolerate a wide range of functional groups and does not need
在10 mol%的邻菲咯啉官能化的MCM-41-负载的铜(I)络合物(Phen-MCM-41-CuI)和10 mol%的存在下,芳基碘化物与二苯膦的异质交叉偶联反应在115°C的甲苯中完成以Cs 2 CO 3为碱,以良好或优异的产率产生各种不对称的三芳基膦。该方案可以耐受各种官能团,不需要使用昂贵的添加剂或苛刻的反应条件。这种非均相的Cu(I)催化剂具有与均相CuI / Phen系统相同的催化活性,可以通过简单过滤反应溶液轻松回收,并循环使用七次而不会显着降低活性。
Ligand-free palladium catalyzed phosphorylation of aryl iodides
A reusable ligand-free palladium catalyzed phosphorylation of aryliodides using PdCl2/tetrabutylammonium bromide is described. Functionalized triarylphosphines were obtained in good to excellent yields in the absence of external reductants and supporting ligands.
Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.