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Title: 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
Authors: Basaif, Salem A
Hassan, Mohamed A
Gobouri, Adil A
Keywords: Diazocoupling;Green chemistry;Disperse dyes;Photostability;Color fastness;Heterogeneous reaction
Issue Date: Jun-2006
Publisher: NISCAIR-CSIR, India
IPC Code: Int.CI.8 C07D
Abstract: 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 hetcroarylazopyrazoloncs 2 as colored products with high yields. These dyes have been characterized by UV-Vis, FT-IR and 1H NMR spectroscopic techniques and elemental analysis. Cotton, wool, silk and polyesters fabrics have been dyed and their photostability and color fastness identified.
Page(s): 1431-1436
ISSN: 0042-6075
Appears in Collections:IJC-B Vol.45B(06) [June 2006]

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