2,6-Diisopropoxyphenyl(dicyclohexyl)phosphine: A New Ligand for Palladium-Catalyzed Amination Reactions of Aryl Chlorides with Potassium Hydroxide as the Base
作者:Bo Lü、Pengbin Li、Chunling Fu、Liqin Xue、Zhenyang Lin、Shengming Ma
DOI:10.1002/adsc.201000349
日期:2011.1.10
developed for the palladium‐catalyzed amination reaction of aryl chlorides in moderate to high yields with the cheap and easily available potassium hydroxide as the base. The reaction enjoys a wide scope, lower reaction temperatures, shorter reaction times, high yields, and low catalyst loading when compared to some of same amination reactions reported in the literature. Based on a kinetic study, 31P NMR measurements
开发了一种新的,易于获得的单膦四氟硼酸盐[ L2 · HBF 4 ],用于钯催化的芳基氯化物的胺化反应,以中到高收率,以廉价且容易获得的氢氧化钾为基础。与文献中报道的某些相同的胺化反应相比,该反应具有广泛的范围,较低的反应温度,较短的反应时间,较高的收率和较低的催化剂载量。基于动力学研究,31 P NMR测量和DFT计算,提出了涉及1:1 Pd / L物质的机理。