119592-97-1Relevant articles and documents
Pyridazines. XXXV. Preparation of Some Novel Pyrimidopyridazine Derivatives from 3-Alkylamino- and 3-Arylamino-4-pyridazinecarboxamides
Haider, Norbert,Heinisch, Gottfried,Lassnigg, Doris
, p. 119 - 124 (2007/10/02)
Facile syntheses of pyrimidopyridazine-5,7(6H,8H)-diones 4, pyrimidopyridazin-5(8H)-ones 7-10, and dihydropyrimidopyridazin-5(6H)-ones 5,6 starting from 3-chloro-4-pyridazinecarbonitrile 1 via aminocarbonitriles 2 and aminocarboxamide