<b>A Bifurcated Multicomponent Synthesis Approach to Polycyclic Quinazolinones</b>
作者:Ruixue Xu、Zefeng Wang、Qiang Zheng、Pravin Patil、Alexander Dömling
DOI:10.1021/acs.joc.2c01561
日期:2022.10.7
polycyclic quinazolinones was achieved by two orthogonal Ugi four-component reaction (Ugi-4CR)-based protocols: the first two-step approach via an ammonia-Ugi-4CR followed by palladium-catalyzed annulation; in the second approach, cyanamide was used unprecedently as an amine component in Ugi-4CR followed by an AIBN/tributyltin hydride-induced radical reaction. Like no other method, MCR and cyclization could
通过两个基于正交 Ugi 四组分反应 (Ugi-4CR) 的方案实现了多种取代多环喹唑啉酮的快速合成:第一个两步法通过氨-Ugi-4CR,然后是钯催化的环化;在第二种方法中,单氰胺被前所未有地用作 Ugi-4CR 中的胺组分,然后是 AIBN/三丁基氢化锡诱导的自由基反应。与其他方法不同,MCR 和环化可以在很少的步骤中有效地构建许多具有定制特性的生物学上有趣的化合物。