Synthesis of some substituted pyrido[1,2-<i>a</i>]pyrimidin-4-ones and 1,8-naphthyridines
作者:Pier Luigi Ferrarini、Claudio Mori、Oreste Livi、Giuliana Biagi、Anna Maria Marini
DOI:10.1002/jhet.5570200442
日期:1983.7
The substituted 4H-pyrido[1, 2-a]pyrimidin-4-ones (I) were obtained by the condensation of substituted 2-aminopyridines with δ-ketocarboxylic esters in PPA. Some of the derivatives I were transformed into the corresponding 1, 8-naphthyridines II and III.
通过将取代的2-氨基吡啶与δ-酮羧酸酯在PPA中缩合,得到取代的4 H-吡啶并[1,2 - a ]嘧啶-4-酮(I)。一些衍生物I被转化为相应的1、8-萘啶II和III。