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Synthesis of 5-Amino-4-imino-3,4-dihydropyrido[3,4-d]pyridazin-1(2H)-one Derivatives

✍ Scribed by A. N. Vasil'ev; A. N. Nikolaev; A. N. Lyshchikov; O. E. Nasakin; Ya. S. Kayukov


Book ID
110422346
Publisher
SP MAIK Nauka/Interperiodica
Year
2002
Tongue
English
Weight
30 KB
Volume
38
Category
Article
ISSN
1070-4280

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The Schiff bases 3a-h obtained from 4-amino-1,2,4-triazol-3-ones 1a-h when subjected to Japp-Klingemann reaction yielded the corresponding 3-{2-[(2-aryl-5-methyl-3H-[1,2,4]-triazol-3-one-4-yl)]-iminophenyl}-pentane-2,4-diones 4 a-h. These diones on cyclisation with N 2 H 4 yielded the title compound