THE SYNTHESIS OF SOME HETARYLAZOPYRIDONE DYES AND SOLVENT EFFECTS ON THEIR ABSORPTION-SPECTRA


ERTAN N., EYDURAN F.

DYES AND PIGMENTS, vol.27, no.4, pp.313-320, 1995 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 4
  • Publication Date: 1995
  • Doi Number: 10.1016/0143-7208(94)00071-9
  • Title of Journal : DYES AND PIGMENTS
  • Page Numbers: pp.313-320

Abstract

The synthesis of hetarylazopyridone dyes by coupling 1-butyl-3-cyano-6-hydroxy-4-methyl-2(1H)pyridone with diazotized aminothiazoles and aminobenzothiazoles is reported. Visible absorption spectra of the dyes were examined in various solvents and the compounds in solution exhibited hydrazone-common anion equilibrium. The hetarylazopyridones readily undergo acid dissociation into the common anion in methanol, DMF and DMSO. The effect of temperature on the visible absorption spectra is also discussed.