available compounds. The diketene adduct, in the presence of an amine nucleophile, provides an excellent method for acetoacetylation. For diversity and versatility, a second method utilizing Meldrum's acid was successfully employed for the preparation of additional acetoacetamide derivatives. Using the Knorr pyrrole synthesis, pyrrole amides were readily prepared from the oxime of the acetoacetamides
摘要 我们报告了一种廉价的大规模生产各种
吡咯酰胺的方法,产率高。合成顺序允许从市售化合物以优异至中等产率制备多种
吡咯酰胺衍
生物。在胺亲核试剂的存在下,双烯酮加合物提供了一种极好的乙酰乙酰化方法。为了多样性和多功能性,成功地采用了利用 Meldrum 酸的第二种方法来制备额外的乙酰乙酰胺衍
生物。使用克诺尔
吡咯合成,可以很容易地从乙酰乙酰胺的
肟中制备
吡咯酰胺。