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(searched for: (10.5155/eurjchem.6.1.57-62.1145))
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Ali AbdelHamid Deeb, Mamdoh Bahgat El‐Hossami, Ahmed Awad Mohammed AbdelGawad
European Journal of Chemistry, Volume 6; doi:10.5155/eurjchem.6.1.57-62.1145

Abstract:
Active methylene compound such as ethyl acetoacetate was coupled with diazotized arylamines to give ethyl arylazoacetoacetates. When the obtained compounds refluxed with 3-hydrazinyl-4,5-diphenyl-1H-pyrazolo[3,4-c]pyridazine in the presence of ethanol yielded 1-(4, 5-Diphenyl-1H-pyrazolo[3, 4-c]pyridazin-3-yl)-3-methyl-4-(2-phenylhydrazono)-1H-pyrazol-5(4H)-one derivatives. The dyes were applied to polyester fabric, and their absorption spectral characteristics, fastness properties and color assessment measured.
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