An Efficient Route to 3-Aryl-Substituted Quinolin-2-one and 1,8-Naphthyridin-2-one Derivatives of Pharmaceutical Interest
作者:Christos A. Mitsos、Alexandros L. Zografos、Olga Igglessi-Markopoulou
DOI:10.1021/jo0340051
日期:2003.5.1
Reaction of arylacetic ester enolates with 2-alkoxy-4H-3,1-benzoxazin-4-ones offers a short and versatile synthetic route to 3-aryl-4-hydroxyquinolin-2(1H)-ones, through the cyclization of the beta-ketoesters produced. Similar reactions of 4H-pyrido[2,3-d][1,3]oxazin-4-ones with ester enolates afford 1-acyl-4-hydroxy-1,8-naphthyridin-2(1H)-ones in a convenient two-step, one-pot procedure.
芳酸酯烯酸酯与2-烷氧基-4H-3,1-苯并恶嗪-4-酮的反应通过β的环化为3-芳基-4-羟基喹啉-2(1H)-酮提供了一种短而通用的合成途径-酮酸酯生产。4H-吡啶并[2,3-d] [1,3]恶嗪-4-酮与烯醇酯的相似反应可在方便的情况下得到1-酰基-4-羟基-1,8-萘啶-2(1H)-酮。两步一锅法。