Nucleophilic Reaction upon Electron-deficient Pyridone Derivatives. IV. Ring Transformation of 1-Substituted 3,5-Dinitro-2-pyridones with Ketones in the Presence of Amines
作者:Eizo Matsumura、Yasuo Tohda、Masahiro Ariga
DOI:10.1246/bcsj.55.2174
日期:1982.7
Ring transformation of 1-substituted 3,5-dinitro-2-pyridones with 1,3-disubstituted acetones in the presence of secondary or primary amines gave p-nitroaniline derivatives and N-substituted 2-nitroacetamide. Two types of enamine intermediates, 2-azabicyclo[3.3.1]nonene derivatives and N-substituted 2-(5-amino-2-nitro-2,4-cyclo-hexadienyl)-2-nitroacetamides were isolated and characterized. The course
在仲胺或伯胺存在下,1-取代的 3,5-二硝基-2-吡啶酮与 1,3-二取代的丙酮的环转化得到对硝基苯胺衍生物和 N-取代的 2-硝基乙酰胺。两种类型的烯胺中间体,2-氮杂双环 [3.3.1] 壬烯衍生物和 N-取代的 2-(5-氨基-2-硝基-2,4-环-己二烯基)-2-硝基乙酰胺被分离和表征。解释碱催化反应的过程。