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Novel synthesis of heteroarylazopyrazolones and their application as disperse dyes via AlCl3-catalyzed diazocoupling of 1-aryl/heteroaryl-3-methyl-1H-pyrazol-2-in-5-ones in aqueous medium
Journal article   Peer reviewed

Novel synthesis of heteroarylazopyrazolones and their application as disperse dyes via AlCl3-catalyzed diazocoupling of 1-aryl/heteroaryl-3-methyl-1H-pyrazol-2-in-5-ones in aqueous medium

Salem A. Basaif, Mohamed A. Hassan and Adil A. Gobouri
Indian journal of chemistry. Sect. B. Organic chemistry, including medicinal chemistry, Vol.45(6), pp.1431-1436
01/06/2006

Abstract

Chemistry Chemistry, Organic Physical Sciences Science & Technology
AlCl3-catalyzed diazocoupling of 1-aryl/heteroaryl -3 -methyl- 1H-pyrazol-2-in-5 -ones 1 in water with different aryl/heteroaryldiazonium salts affords the corresponding heteroarylazopyrazolones 2 as colored products with high yields. These dyes have been characterized by UV-Vis, FT-IR and H-1 NMR spectroscopic techniques and elemental analysis. Cotton, wool, silk and polyesters fabrics have been dyed and their photostability and color fastness identified.

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