DEAD-Promoted Oxidative Ugi-Type Reaction Including an Unprecedented Ugi Amidation Assisted by Dicarboxylic Acids
作者:Jiankun Wang、Yilin Sun、Guangji Wang、Le Zhen
DOI:10.1002/ejoc.201701323
日期:2017.11.16
A mild and metal-free DEAD-promoted oxidative Ugi-type reaction of tertiary amines has been demonstrated, giving facile access to α-amino amides and imides with diverse functional groups in good isolated yields. This Ugi-type approach achieves an unprecedented synthesis of α-amino amide analogues with the assistance of dicarboxylic acids, but not water, for the introduction of carbonyl oxygen of the
已经证明了温和且无金属的 DEAD 促进的叔胺氧化 Ugi 型反应,可以轻松获得具有不同官能团的 α-氨基酰胺和酰亚胺,并具有良好的分离产率。这种 Ugi 类型的方法在二羧酸的帮助下实现了前所未有的 α-氨基酰胺类似物合成,而不是水,用于引入酰胺部分的羰基氧。机理研究表明,二元羧酸很容易发生分子内环化,而不是 Mumm 重排,从而提供所需的酰胺,同时释放一分子酸酐。