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Pyridazine derivatives and related compounds. 23. Synthesis of 3-substituted pyrazolo{[}3,4-c]pyridazines and their application as disperse dyes
Faculty
Science
Year:
2010
Type of Publication:
Article
Pages:
212-222
Authors:
DEEB, A, YASSIN, F, Ouf, N, Shehta, W
DOI:
10.1007/s10593-010-0494-1
Journal:
CHEMISTRY OF HETEROCYCLIC COMPOUNDS SPRINGER
Volume:
46
Research Area:
Chemistry
ISSN
ISI:000279454900012
Keywords :
3-hydrazino-1H-pyrazolo{[}3, 4-c]pyridazine, monoazo dyes, color fastness
Abstract:
Acetylacetone and malononitrile were coupled with diazotized arylamines to give arylazoacetyl-acetones and arylazomalononitriles. When refluxed with 3-hydrazino-4,5-diphenyl-1H-pyrazolo-{[}3,4-c]pyridazine in the presence of ethanol/HCl, they yielded the corresponding 3-{[}4-(arylazo)-3,5-di-methylpyrazol-1-yl]- and 3-{[}3,5-diamino-4-(arylazo)pyrazol-1-yl]-4,5-diphenyl-1H-pyrazolo{[}3,4 -c]pyri-dazine dyes. The dyes were applied to polyester and polyamide fabrics, and their spectral and fastness properties were measured.
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