3-Methyl-5-nitropyrimidin-4(3H)-one reacted with enaminones to cause the ring transformation leading to functionalized 4-aminopyridines. Various kinds of amino groups can be introduced at the 4-position by modifying the enaminones. The modification of its vicinal positions was also possible. In addition, a bicyclic pyridine could be synthesized by making use of the vicinal functionality of a 4-aminopyridine-3-carboxylic acid.
3-甲基-5-
硝基嘧啶-4(3H)-酮与烯
氨酮发生环化反应,生成功能化的 4-
氨基吡啶。通过对烯
丙酮进行修饰,可以在 4 位引入各种
氨基。也可以对其邻位进行修饰。此外,还可以利用 4-
氨基吡啶-3-
羧酸的邻位官能团合成双环
吡啶。