A comprehensive solvent-free approach for the esterification and amidation of carboxylic acids mediated by carbodiimides
作者:Serena Traboni、Fabiana Esposito、Marcello Ziaco、Emiliano Bedini、Alfonso Iadonisi
DOI:10.1016/j.tet.2023.133291
日期:2023.3
In this work we report an unprecedented solvent-free approach for the condensation of carboxylic acids with alcohols and amines mediated by carbodiimides, the most widely adopted coupling agents. The solventless procedure enabled fast and high-yielding reactions at either room temperature or under conventional heating despite the use of a catalytic loading of DMAP as the additive (1–5 mol%), far below
在这项工作中,我们报告了一种前所未有的无溶剂方法,用于羧酸与醇和胺的缩合,碳二亚胺是最广泛采用的偶联剂。尽管使用催化负载的 DMAP 作为添加剂(1-5 mol%),无溶剂程序能够在室温或常规加热下实现快速和高产率的反应,远低于文献中通常报道的量;此外,它被发现广泛适用于各种酯/酰胺键的合成,甚至来自非平凡的碳水化合物和氨基酸前体。鉴于其多功能性和多重环境、实验和经济优势,这种新方法有望对酯类和酰胺发挥突出作用的几个科学领域产生有益影响。