A general, efficient and green method for the synthesis of dihydropyrimidinones is described under mild conditions employing low melting mixtures of L-(+)-tartaric acid and urea derivatives as a novel reaction medium. The melt plays a triple role: as solvent, as catalyst and as reactant, furnishing highly functionalized dihydropyrimidinones in good to excellent yields.
本文描述了一种在温和条件下合成二氢
嘧啶酮的通用、高效且环保的方法,该方法采用L-(+)-
酒石酸和
尿素衍
生物的低熔点混合物作为新型反应介质。熔体具有三重作用:作为溶剂、催化剂和反应物,以良好至极佳的收率提供高官能化的二氢
嘧啶酮。