Journal of Molecular Structure

Synthesis, biological activity and dyeing performance of some novel azo disperse dyes incorporating pyrazolo [1, 5-a] pyrimidines for dyeing of polyester fabrics

AZ Sayed, MS Aboul-Fetouh, HS Nassar

Index: Sayed, Ahmed Z.; Aboul-Fetouh, Mahmoud S.; Nassar, Hesham S. Journal of Molecular Structure, 2012 , vol. 1010, p. 146 - 151

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Citation Number: 22

Abstract

Several novel pyrazolopyrimidine azo compounds were achieved from diazotization of 4- aminoacetanilide and coupling with malononitrile and then refluxed with hydrazine hydrate to furnish 3, 5-diamino-4-(4-acetamidophenylazo)-1H-pyrazole. The later compound was diazotized and coupled with substituted α-cyanocinnamate, α-cyanocinnamonitrile, 2-cyano- 3-ethoxyacrylic acid ethyl ester, chalcones and ethylacetoacetate to produce novel ...