Oxidant- and metal-free synthesis of 4(3H)-quinazolinones from 2-amino-N-methoxybenzamides and aldehydes via acid-promoted cyclocondensation and elimination
作者:Ran Cheng、Linlin Tang、Tianjian Guo、Daisy Zhang-Negrerie、Yunfei Du、Kang Zhao
DOI:10.1039/c4ra04331f
日期:——
biologically important 4(3H)-quinazolinones were readily synthesized in good to excellent yields from 2-amino-N-methoxybenzamides and aldehydes via a cascade reaction consisting of AcOH-promoted cyclocondensation and elimination. The current method sets itself apart from the conventional approach utilizing anthranilamide derivatives and aldehydes as building blocks, by its unique features, other than the
通过由AcOH促进的环缩合和消除反应所组成的级联反应,可以很容易地从2-氨基-N-甲氧基苯甲酰胺和醛类中,以高到极高的产率合成一系列重要的生物学上重要的4(3 H)-喹唑啉酮。除了高收率和一锅法(包括不使用氧化剂,无需重金属催化剂)之外,目前的方法与常规方法(利用蒽酰胺衍生物和醛类作为结构单元的常规方法)不同,它具有高收率和一锅法的特点。 ,并形成无毒的酯副产物。