Copper(II) trans-bis-(glycinato): an efficient heterogeneous catalyst for cross coupling of phenols with aryl halides
作者:Sanny Verma、Neeraj Kumar、Suman L. Jain
DOI:10.1016/j.tetlet.2012.06.071
日期:2012.8
Copper(II) trans-bis-(glycinato) complex, easily prepared by the solid state reaction of copper(II) acetate and glycine (trans-[Cu(glyo)2·H2O]) was found to be an efficient, recyclable, and high yielding catalyst for the Ullmann type synthesis of diaryl ethers via the cross coupling of phenols with aryl halides without using any additives at relatively low reaction temperature. The catalyst could easily
发现铜(II)反式-双-(氨基乙酸)配合物很容易通过乙酸铜(II)和甘氨酸的固相反应制备(反式-[[Cu(glyo)2 ·H 2 O]),苯酚与芳基卤化物的交叉偶合反应,可在相对较低的反应温度下通过苯酚与芳基卤化物的交联反应,用于Ullmann型合成二芳基醚的可回收,高产催化剂。通过简单的过滤就可以容易地回收催化剂,并以一致的催化活性重复使用数次。