Journal of the Serbian Chemical Society 2011 Volume 76, Issue 4, Pages: 499-504
https://doi.org/10.2298/JSC100618044D
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Synthesis of 5-(substituted phenylazo)-6-hydroxy-4-methyl-3- cyano-2-pyridones from ethyl 3-oxo-2-(substituted phenyldiazenyl)butanoates
Dostanić Jasmina (Institute of Chemistry, Technology and Metallurgy, Department of Catalysis and Chemical Engineering, Belgrade)
Valentić Nataša 
(Faculty of Technology and Metallurgy, Belgrade)
Ušćumlić Gordana (Faculty of Technology and Metallurgy, Belgrade)
Mijin Dušan (Faculty of Technology and Metallurgy, Belgrade)
A new procedure for the synthesis of known azo pyridone dyes is presented. A
series of 5-(substituted arylazo)-6-hydroxy-4-methyl-3- cyano-2-pyridones
were prepared from ethyl 3-oxo-2-(substituted phenyldiazenyl)butanoates and
cyanoacetamide in acetone using potassium hydroxide as a catalyst by simple
refluxing the reaction mixture. The structure of these dyes was confirmed by
FT-IR, NMR and UV-Vis spectroscopy.
Keywords: azo compounds, cyclocondensation reaction, cyanoacetamide, pyridone