As. Shawali et Sm. Gomha, A new entry for short and regioselective synthesis of [1,2,4]Triazolo[4,3-b][1,2,4]-triazin-7(1H)-ones, J PRAK CHEM, 342(6), 2000, pp. 599-604
Citations number
26
Categorie Soggetti
Chemistry
Journal title
JOURNAL FUR PRAKTISCHE CHEMIE-PRACTICAL APPLICATIONS AND APPLIED CHEMISTRY
Reaction of benzenediazonium chloride with active [1,2,4]triazin-3-ylthio-m
ethylene compounds 3 afforded the azo coupling products 5, which yielded [1
,2,4]triazolo[4,3-b][1,2,4]triazin-7(1H)-ones 8 upon treatment with sodium
ethoxide in ethanol. The latter products 8 were characterized on the basis
of alternate synthesis and spectral data. The mechanism of formation of 8 a
nd the regiochemistry of the studied reactions are discussed.