Multicomponent Synthesis of Uracil Analogues Promoted by Pd-Catalyzed Carbonylation of α-Chloroketones in the Presence of Isocyanates and Amines
作者:Serena Perrone、Martina Capua、Antonio Salomone、Luigino Troisi
DOI:10.1021/acs.joc.5b01270
日期:2015.8.21
A short and efficient one-pot synthesis of uracil derivatives with a high structural variability is described. The process is a multicomponent reaction based on a palladium-catalyzed carbonylation of α-chloroketones in the presence of primary amines and isocyanates. In most cases, when the formation of unsymmetrical N,N′-disubstituted uracil derivatives can occur, the methodology demonstrates to be
描述了一种短而有效的一锅法合成具有高结构变异性的尿嘧啶衍生物。该方法是基于伯胺和异氰酸酯存在下钯催化的α-氯酮羰基化的多组分反应。在大多数情况下,当可以形成不对称的N,N'-二取代的尿嘧啶衍生物时,该方法证明具有很高的区域选择性。讨论了涉及β-二羰基钯中间体和尿素衍生物的机械假设,这些假设是就地产生的。