作者:E. A. Yurtaeva、A. G. Tyrkov
DOI:10.1134/s1070428016020214
日期:2016.2
5H)-trione (barbituric acid) 1 due to the high mobility of methylene hydrogen atoms in the pyrimidine ring is known to be nitrated to 5,5-dinitrobarbituric acid and nitrosated to violuric acid [1]. Compound 1 as well as its 2-thioand 2selenoanalogs enter in the condensation with aromatic aldehydes and dialdehydes (terephthalic aldehyde), and also with heterocyclic aldehydes (2-furaldehyde, 5aryl-2
Pyrimidine-2,4,6(1H,3H,5H)-trione (barbituric acid) 1 由于嘧啶环中亚甲基氢原子的高迁移率,已知可硝化为 5,5-二硝基巴比妥酸并亚硝化为紫尿酸酸 [1]。化合物 1 及其 2-硫代和 2-硒代类似物与芳香醛和二醛(对苯二甲醛)以及杂环醛(2-糠醛、5芳基-2-噻吩甲醛)或二酮(6,6二甲基-1- phenyl-6,7-dihydro-1Н-indazole-4,5-dione) 形成相应的 5-arylmethylidene(hetarylmethylidene) 衍生物 [2-6]。类似产物的形成也是嘧啶-2,4,6(1H,3H,5H)-三酮或其2-硫代类似物与2-单取代或2,6-二取代的γ-吡喃酮和4-吡啶酮 [7, 8]。