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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

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Chemistry of Heterocyclic Compounds Aims and scope

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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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt

    A. Deeb, F. Yassin, N. Ouf & W. Shehta

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  1. A. Deeb
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  2. F. Yassin
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  3. N. Ouf
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  4. W. Shehta
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Correspondence to A. Deeb.

Additional information

For Communication 22 see [1].

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 262-274, February, 2010.

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Deeb, A., Yassin, F., Ouf, N. et al. Pyridazine derivatives and related compounds. 23*. Synthesis of 3-substituted pyrazolo[3,4-c]pyridazines and their application as disperse dyes. Chem Heterocycl Comp 46, 212–222 (2010). https://doi.org/10.1007/s10593-010-0494-1

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  • DOI: https://doi.org/10.1007/s10593-010-0494-1

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