Substituted pyridopyrimidinones, 1: Convenient PTC alkylation and halogenation of 2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one
作者:Mohamed Abass、Aisha S. Mayas
DOI:10.1002/hc.20245
日期:——
Alkylation of 2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one (1) was investigated under solid–liquid phase transfer catalysis conditions (PTC), using tetrabutylammonium bromide and potassium carbonate. The reaction with alkyl halides led to the formation of various 2-alkoxy products, in fair yields. Reaction of compound 1 with epichlorohydrin and chloroacetonitrile, under the same PTC conditions, afforded
使用四丁基溴化铵和碳酸钾,在固液相转移催化条件 (PTC) 下研究了 2-羟基-4H-吡啶并 [1,2-a] 嘧啶-4-one (1) 的烷基化反应。与卤代烷反应生成各种 2-烷氧基产物,产率相当。化合物 1 与表氯醇和氯乙腈在相同的 PTC 条件下反应,分别得到新的 O1,O3-二取代甘油和恶唑并吡啶并嘧啶酮甜菜碱衍生物。还使用不同的卤化剂在不同的反应条件下制备了一些 3-卤代、3,3-二卤代和/或 2,3-二卤代吡啶并 [1,2-a] 嘧啶。© 2007 Wiley Periodicals, Inc. 杂原子化学 18:19–27, 2007; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20245