Bis(2-methoxyethyl)ether promoted intramolecular acceptorless dehydrogenative coupling to construct structurally diverse quinazolinones by molecular oxygen
作者:Rongrong Zhao、Simiaomiao Wen、Hao Fu、Mengna Liu、Qixing Liu、Haifeng Zhou
DOI:10.1039/d1gc04581d
日期:——
A simple, efficient, and clean approach for the synthesis of diverse dihydroisoquinolino[2,1-a]quinazolinones, 2-aryl quinazolinones, and analogues through intramolecular acceptorless dehydrogenative coupling has been achieved. The combination of bis(2-methoxyethyl)ether and molecular oxygen was identified as a highly efficient system for this oxidative dehydrogenative coupling sequential transformation
已经实现了一种通过分子内无受体脱氢偶联合成多种二氢异喹啉[ 2,1- a ]喹唑啉酮、2-芳基喹唑啉酮和类似物的简单、高效和清洁的方法。双(2-甲氧基乙基)醚和分子氧的组合被确定为这种氧化脱氢偶联顺序转化的高效体系,无需外部引发剂、催化剂和添加剂。通过29个例子的范围和克级反应证明了其适用性和实用性。还进行了一些对照实验以支持可能的反应途径。