Disclosed are a mild and efficient preparation method for an α-acyloxyenamide compound and a use thereof in the synthesis of an amide and a polypeptide. The α-acyloxyenamide compound is obtained by an addition reaction of a ynamide and a carboxylic acid in dichloromethane under conditions where the temperature is 0° C. to 50° C.; the produced α-acyloxyenamide compound can react with an amine compound to produce an amide or a polypeptide; the two reactions can be carried out step by step, and can also be carried out in one pot. According to the invention, the reaction conditions are mild and no metal catalyst is required; when the carboxylic acid, which has chirality on an alpha site of carboxyl, forms an amide bond or a peptide bond, no racemization occurs; and the operation is simple and the application range is wide.
本发明公开了一种温和高效的 α-酰氧基烯酰胺化合物的制备方法及其在酰胺和
多肽合成中的用途。α-乙酰氧基烯酰胺化合物是通过酰酰胺和
羧酸在
二氯甲烷中的加成反应得到的,反应条件是温度为0℃至50℃;生成的α-乙酰氧基烯酰胺化合物可以与胺化合物反应生成酰胺或
多肽;这两个反应可以逐步进行,也可以在一锅中进行。根据本发明,反应条件温和,不需要
金属催化剂;当羧基α位上具有手性的
羧酸形成酰胺键或肽键时,不会发生消旋化;操作简单,应用范围广。