作者:Xin Fang、Chengning Qi、Xiangqian Cao、Zhi-Gang Ren、David James Young、Hong-Xi Li
DOI:10.1039/d3gc02541a
日期:——
It is well known that diazonium salts (ArN2+) react with phenols (Ar′OH) to give aryl diazoethers or diazo compounds, but their cross-coupling to exclusively access diaryl ethers is challenging. Herein we disclose the Cu-catalyzed etherification of phenols with aryl diazonium salts at room temperature, yielding diaryl ethers in moderate to excellent yields. The advantages of this protocol are mild
众所周知,重氮盐(ArN 2 +)与酚(Ar'OH)反应生成芳基重氮醚或重氮化合物,但它们的交叉偶联以专门获得二芳基醚是具有挑战性的。在此,我们公开了在室温下铜催化的苯酚与芳基重氮盐的醚化,以中等至优异的产率产生二芳基醚。该方案的优点是反应条件温和、反应物易得、操作简单、对其他官能团的耐受性高且易于后处理。展示了其在复杂生物分子合成中的应用。反应经过单电子转移、氮挤出、氧化加成和还原消除,得到二芳基醚产物。