New disazo pyrazole disperse dyes: Synthesis, spectroscopic studies and tautomeric structures

Karci F., BAKAN E.

Journal of Molecular Liquids, vol.206, pp.309-315, 2015 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 206
  • Publication Date: 2015
  • Doi Number: 10.1016/j.molliq.2015.02.032
  • Journal Name: Journal of Molecular Liquids
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.309-315
  • Keywords: Absorption ability, Disazo dyes, Disperse dyes, Pyrazole dyes, Solvatochromism, Tautomeric structure
  • Uşak University Affiliated: Yes

Abstract

5-amino-4-arylazo-3-methyl-1-phenylpyrazoles (2a-k)were diazotised and coupledwith 5-hydroxy-3-methyl-1H-pyrazole and 5-hydroxy-3-methyl-1-phenylpyrazole to generate two series disazo pyrazole disperse dyes (3a-k and 4a-k). These novel synthesized disazo pyrazole disperse dyes were characterized by elemental analysis and spectral methods. Absorption ability and tautomeric structure of synthesized disazo pyrazole disperse dyes substituted with electron-withdrawing and electron-donating groups at their o, m- and p-positions were also examined in detail.