Synthesis of 2,4-diamino-5-acetyl(ethoxycarbonyl)pyrimidines from β-dicarbonyl compounds and dicyandiamide and their use for building a pyrimido[4,5-d]pyrimidine system - Dorokhov, V. A.; Gordeev, M. F.; Komkov, A. V.; Bogdanov, V. S. (Springer, 1991)
http://dx.doi.org/10.1007/BF00959646
Keywords: V