Cyclocondensation Reactions of Heterocyclic Carbonyl Compounds. [1]. Synthesis of 2,6-bis(6-Azauracil-5-yl)aniline and its Use for Synthesis of Some Other Polynuclear 1,2,4-Triazines

Article abstract of DOI:10.1002/jhet.5570340331

5-(2-Aminophenyl)-6-azauracil 1 was converted to 7-(6-azauracil-5-yl)isatin 3, semicarbazone 4 of which was recyclized to 2,6-bis(6-azauracil-5-yl)aniline 5. This one served as a starting compound for preparation of other noncondensed two nuclear heterocycles 7, 9, 10 and condensed 1,2,4-triazines 11 and 12 as well.