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Solid-phase synthesis of 4-triphenylphosphoranylidene-4,5-dihydropyrazol-5-ones, 4-aminocarbonyl-pyrroles, 4-methoxy-1H-pyrazol-5(2H)-ones and 2-thiazolin-4-ones from polymer-bound 1,2-diaza-1,3-butadienes

โœ Scribed by Orazio A Attanasi; Lucia De Crescentini; Paolino Filippone; Fabio Mantellini; Lutz F Tietze


Book ID
108371257
Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
276 KB
Volume
57
Category
Article
ISSN
0040-4020

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Azopyrazolobenzylidene derivatives of 4-
โœ Vinay A. Sunagar; Prashant R. Latthe; Bharati V. Badami ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 568 KB

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