Synthetic Access to New Pyridone Derivatives through the Alkylation Reactions of Hydroxypyridines with Epoxides
作者:Ahmet Kocak、Sultan Kurbanli、Sait Malkondu
DOI:10.1080/00397910701569254
日期:2007.10.1
oxiranes in good yields, whereas oxypyridine derivatives (5a–d, 9a,b) were obtained from reactions of 3‐hydroxypyridine and 2‐pyridinemethanol with oxiranes. Chlorohydrines (3d, 5d, 7d) were easily converted to corresponding epoxy derivatives (10, 11, 12) in basic medium; then amino alcohols (13–17) were obtained from the reaction of these epoxy derivatives with amines.
摘要 描述了制备各种吡啶酮和氧吡啶衍生物的一般方法。在不同的路易斯酸作为催化剂的存在下,2-,3-,4-羟基吡啶和2-吡啶甲醇与乙烯-、丙烯-、苯乙烯-氧化物和环氧氯丙烷发生烷基化反应。在 CdI2/BF3·OEt2 存在下获得了 3a 的最佳产率。相应的吡啶酮衍生物 (3a-d, 7a-d) 由 2-和 4-羟基吡啶与环氧乙烷以良好的收率反应获得,而氧吡啶衍生物 (5a-d, 9a,b) 由 3-羟基吡啶和 2-吡啶甲醇与环氧乙烷。氯醇(3d、5d、7d)在碱性介质中很容易转化为相应的环氧衍生物(10、11、12);然后从这些环氧衍生物与胺的反应中获得氨基醇(13-17)。