The phosphate–carboxylate mixed-anhydride method: a mild, efficient process for ester and amide bond construction
作者:James McNulty、Ramesh Vemula、Venkatesan Krishnamoorthy、Al Robertson
DOI:10.1016/j.tet.2012.04.103
日期:2012.7
carboxylate–phosphate anhydride pathway is described for the direct, economical synthesis of esters and amides from carboxylic acids and alcohols or amines. The reaction proceeds with retention of configuration with both chiral secondary alcohols and α-amino acid derivatives allowing access to useful chiral auxiliaries, ligands, and organocatalysts. Ester and amide products can be isolated directly in high yield due
描述了一种高效的羧酸酯-磷酸酐途径,可从羧酸,醇或胺直接,经济地合成酯和酰胺。该反应在保留手性仲醇和α-氨基酸衍生物的构型的情况下进行,从而允许获得有用的手性助剂,配体和有机催化剂。由于副产物的水溶性,可以直接高产率地分离出酯和酰胺产物。