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 phenylazo)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.
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Kyung Hee East-West Pharmaceutical Research Institute and Department of Pharmaceutical Sciences,College of Pharmacy,Kyunghee UniversityKyung Hee East-West Pharmaceutical Research Institute and Department of Pharmaceutical Sciences,College of Pharmacy,Kyunghee University
M.Naseer A.Khan
Yong Sup Lee
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Kyung Hee East-West Pharmaceutical Research Institute and Department of Pharmaceutical Sciences,College of Pharmacy,Kyunghee UniversityKyung Hee East-West Pharmaceutical Research Institute and Department of Pharmaceutical Sciences,College of Pharmacy,Kyunghee University