New azo disperse dyes containing cyclohexanone ring for dyeing polyester and nylon fabrics

Authors

  • Hatem E. Gaffer Textile Research Division, National Research Center, Dokki, Cairo
  • Mohamed A. E. Khalifa Higher Institute of Engineering and Technology, New Damiette
  • Shaima F. El-Bially Textile Research Division, National Research Center, Dokki, Cairo
  • Mohamed A. Metwally Faculty of Science, Mansoura University, Mansoura

DOI:

https://doi.org/10.20450/mjcce.2010.176

Keywords:

Japp-Klingemann reaction, phenyl hydrazine, indazole, cyclohexane

Abstract

Condensation of 2,4-diacarboethoxy-5-hydroxy-3-(4-methoxyphenyl)-5-methyl cyclohexanone (1) with equimolar amounts of hydrazine hydrate and phenyl hydrazine afforded the corresponding 2H-indazole-5-carboxylates 2a

and 2b, respectively. Coupling of 2 with diazotized aromatic amines furnished the corresponding azo compounds 3a

n. When compound 1 was subjected to the Japp-Klingemann reaction in alkaline medium with diazotized aromatic

amines furnished the corresponding hydrazones 4a-g. The treatment of 4a-g with phenyl hydrazine in acetic acid allows the isolation of arylhydrazono derivatives 5a-g. The structures of the dyes were established using analytical and spectral data. Evaluation of the technical properties and color assessment of the dyes were done.

References

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Published

2010-06-15

How to Cite

Gaffer, H. E., Khalifa, M. A. E., El-Bially, S. F., & Metwally, M. A. (2010). New azo disperse dyes containing cyclohexanone ring for dyeing polyester and nylon fabrics. Macedonian Journal of Chemistry and Chemical Engineering, 29(1), 87–95. https://doi.org/10.20450/mjcce.2010.176

Issue

Vol. 29 No. 1 (2010)

Section

Chemical Engineering

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