A sustainable heterogenized palladium catalyst for Suzuki-Miyaura cross coupling reaction of azaheteroaryl halides in aqueous media
作者:S. Ganesamoorthy、M. Muthu Tamizh、K. Shanmugasundaram、R. Karvembu
DOI:10.1016/j.jorganchem.2018.02.030
日期:2018.5
A unique recyclable Pd catalyst (‘SiO2’-NH2-Pd) for Suzuki-Miyaura coupling reaction of azaheteroaryl halides is developed. The catalytic system is working under mild aqueous condition with low Pd loading and without the use of phosphine ligand. The plausible mechanism is proposed based on the formation of undesired symmetrical biaryl from the coupling reaction of azaheteroaryl chlorides due to the
一个独特的可回收的Pd催化剂(“的SiO 2 ” -NH 2为azaheteroaryl卤化物的铃木-宫浦偶合反应-Pd)被显影。催化系统在温和的水性条件下工作,Pd含量低,并且不使用膦配体。基于亲核芳基硼酸的氧化均偶联,由氮杂杂芳基氯的偶合反应形成不希望的对称联芳基,提出了可能的机理。该催化体系代表了具有高产率的合成氮杂杂联芳基的有吸引力且有希望的方法。该催化剂显示出优异的可回收性。