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Vol. 26 No. 18 (2014): Vol 26 Issue 18

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Synthesis of Some Substituted Formazans and bis Formazans

https://doi.org/10.14233/ajchem.2014.16491
E. Yildirim
Department of Chemistry, Faculty of Science, Hacettepe University, Beytepe 06800, Ankara, Turkey
H. Senoz
Department of Chemistry, Faculty of Science, Hacettepe University, Beytepe 06800, Ankara, Turkey

Corresponding Author(s) : H. Senoz

senoz@hacettepe.edu.tr

Asian Journal of Chemistry, Vol. 26 No. 18 (2014): Vol 26 Issue 18

Abstract

Novel 1-(p-aminophenyl)-3-(p-substituted phenyl)-5-phenylformazan compounds (2a-f) and 1,1'-([1,1'-biphenyl]-4,4'-yl)bis(3-(p-substituted phenyl)-5-phenylformazan compounds (3a-f) were synthesized by diazo coupling reactions of the prepared hydrazones (1a-f) with diazonium salts of phenylenediamine and benzidine, respectively. Novel mono-formazans were obtained with high yields under mild reaction conditions and were crystallized from methanol. Bis-formazans were purified by flash column chromatograph over silica gel. The structures of formazans and bis-formazans were confirmed by elemental analysis, HR-MS and their spectral behaviours were investigated using 1H NMR, 13C NMR, FT-IR techniques. The absorption characteristics of the compounds were examined by UV-visible spectra.

Keywords

Formazan dyes Formazan Bis-formazan Diazo coupling Spectroscopy
Yildirim, E., & Senoz, H. (2014). Synthesis of Some Substituted Formazans and bis Formazans. Asian Journal of Chemistry, 26(18), 6029–6032. https://doi.org/10.14233/ajchem.2014.16491
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