Synthesis and Characterization of some Disperse Dyes based on Enaminones

Document Type : Original Article

Authors

1 Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research Division, National Research Centre, 33 El Buhouth St., Cairo, Egypt

2 Department of Chemistry, Faculty of Science, Zagazig University, Egypt.

3 Department of Chemistry, Faculty of Science, Zagazig University, Egypt

Abstract

3-Dimethyl amino-1-phenyl propenone, 3-Dimethyl amino-1-p-tolyl-propenone and 1-(4-Bromo phenyl)-3-dimethyl amino-propenone 4a-c were gotten in a good yields by reaction of methyl ketones (acetophenone, p-methyl acetophenone, p-bromo acetophenone) with dimethyl formamide dimethyl acetal DMFDMA in para-xylene. Enaminones 4a-c were exposed to coupling process with arylidene diazonium chloride to afford the disperse dyes 7a-f. The substance structures were explained by various diagnostic procedures as well as elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), and nuclear magnetic resonance 1H-NMR spectra. These disperse dyes delivered of the coupling reaction has affirmed that these colors in the solid state they exists in the anti rather than syn-form.

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History

  • Receive Date: 16 January 2020
  • Revise Date: 15 March 2020
  • Accept Date: 19 January 2020

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