Coupling reaction between electron-rich 2-morpholino-4(3H)-pyrimidinone and nucleophilic side chains of several natural α-amino acids promoted by phosphonium salt has been developed to prepare new optically active pyrimidin-4-yl amino acids. The best results were obtained using a two-step method through the easily available benzotriazolyl-1-oxy intermediate. A detailed optimization study of this reaction is discussed.
在
鏻盐的促进下,富电子的 2-吗啉基-4(3H)-
嘧啶酮与几种天然δ-
氨基酸的亲核侧链发生了偶联反应,从而制备出了新的光学活性
嘧啶-4-基
氨基酸。通过容易获得的苯并三唑-1-氧基中间体,采用两步法获得了最佳结果。本文讨论了该反应的详细优化研究。