A copper-catalyzed coupling of α-oxocarboxylic acids with formamides is reported. This simple method provides a practical approach toward the synthesis of α-ketoamides with a variety of functional groups. Mechanistic studies have shown that the reaction proceeded via a radical process and 13C-labeled experiments proved that the amide carbon in the products comes from the corresponding carboxylic acid, not from the DMF.
报道了一种
铜催化的α-氧代
羧酸与甲酰胺的偶联反应。该简便方法为合成具有多种官能团的α-酮酰胺提供了一种实用途径。机理研究表明,反应通过自由基过程进行,并且13C标记实验证实产物中的酰胺碳原子来源于相应的
羧酸,而非来自二甲基甲酰胺(
DMF)。