Eur. J. Chem. volume 4, issue 3, P240-244 2013 DOI: 10.5155/eurjchem.4.3.240-244.834
Alya Al-Etaibi, Morsy Ahmed El-Apasery, Nouria Al-Awadi
Abstract:

KEYWORDS1,4-Diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (8), is synthesized by reacting ethyl cyanoacetate with ethyl amine to produce the amide 4, which when reacted with methyl propionylacetate, afforded compound 8. Compound 8 is then coupled with aromatic diazonium salts to give the corresponding arylhydrazono-1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile disperse dyes, 11a-d, whose structures were elucidated by using X-ray crystal structure determinations. A high temperature dyeing method was employed to apply these dyes for polyester fabrics. The relationship between dyeing properties and the concentration of dispersing agent present in a dye bath is evaluated.Disperse dyes Polyester fabrics Fastness properties Dispersing agent Sodium lignin sulfonate X-ray crystal structure determinations

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