Synthesis of new pyrazolone dyes

GÜNKARA Ö. T., Bagdatli E., Ocal N.

JOURNAL OF CHEMICAL RESEARCH, no.4, pp.227-231, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2013
  • Doi Number: 10.3184/174751913x13636169962208
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.227-231
  • Keywords: pyrazolone dyes, 5-pyrazolone derivatives, azo coupling, DYEING POLYESTER FABRICS, AZODISPERSE DYES, DISPERSE DYES, AZO, COMPONENT, PYRIDONE, MOIETY, RING
  • Yıldız Technical University Affiliated: Yes


New azo- and bisazo-5-pyrazolone dyes have been synthesised by azo coupling of various arylamines and aryl diamines with 5-pyrazolones: 1-methyl-3-phenyl-1H-pyrazol-5(4H)-one, 1-(4-chlorophenyl)-3-isopropyl-1H-pyrazol-5(4H)-one and 3-isopropyl-1-(4-methoxyphenyl)-1H-pyrazol-5(4H)-one, respectively. All new synthesised dyes have been characterised by FTIR, H-1, C-13 NMR and UV-Vis spectral studies with GC/MS and LC/MS analyses. FTIR and H-1 NMR studies confirmed the existence of azo- and hydrazo-tautomeric forms of the dyes in the solid and liquid states, respectively.