New approach for the synthesis of 1-aryl- and 1-heteroaryl-5-nitrouracil derivatives
作者:Andrzej Gondela、Krzysztof Walczak
DOI:10.1016/j.tet.2007.01.040
日期:2007.3
1-(2,4-Dinitrophenyl)-5-nitrouracil and its 3-methyl derivatives were synthesized and used as substrates in reaction with aromatic amines and amino pyridines. In the reaction of aniline with 1-(2,4-dinitrophenyl)-5-nitrouracil, only the acyclic adduct was isolated. When 1-(2,4-dinitrophenyl)-3-methyl-5-nitrouracil was treated with aniline and other aromatic amines or amino pyridines, the desired 1-aryl-5-nitrouracil
合成了1-(2,4-二硝基苯基)-5-硝基尿嘧啶及其3-甲基衍生物,并将其用作与芳香胺和氨基吡啶反应的底物。在苯胺与1-(2,4-二硝基苯基)-5-硝基尿嘧啶的反应中,仅分离出无环加合物。当用苯胺和其他芳族胺或氨基吡啶处理1-(2,4-二硝基苯基)-3-甲基-5-硝基尿嘧啶时,以令人满意的产率获得了所需的1-芳基-5-硝基尿嘧啶衍生物。讨论了存在于尿嘧啶环中的游离H-3质子对反应过程的影响。