convenient synthesis of pyrido[2,1-f]purine.-2,4-di-ones is described by reaction of 6-aminouracil derivatives with N-bromosuccinimide (NBS) followed by in situ reaction with pyridine or 4-substituted pyridines. A detailed study of the reaction conditions has been performed and a mechanism involving a 5,5-dibromo derivative is proposed.
通过 6-
氨基尿
嘧啶衍
生物与 N-
溴代琥珀
酰亚胺 (
NBS) 的反应,然后与
吡啶或 4-取代的
吡啶进行原位反应,描述了一种方便的
吡啶并 [2,1-f]
嘌呤.-2,4-二酮合成方法. 对反应条件进行了详细研究,并提出了涉及 5,5-二
溴衍
生物的机理。