Synthesis and Spectroscopic Study of Naphtholic and Phenolic Azo Dyes
Published: 2013-03-04
Page: 28-41
Issue: 2013 - Volume 3 [Issue 1]
Olayinka O. Ajani *
Department of Chemistry, School of Natural and Applied Sciences, CST, Covenant University, Km 10, Idiroko Road, PMB 1023, Ota, Ogun State, Nigeria
Oluwabunmi E. Akinremi
Department of Chemistry, School of Natural and Applied Sciences, CST, Covenant University, Km 10, Idiroko Road, PMB 1023, Ota, Ogun State, Nigeria
Alice O. Ajani
Nigerian Stored Products Research Institute, Onireke, Ibadan, Oyo State, Nigeria
Abiola Edobor-Osoh
Department of Chemistry, School of Natural and Applied Sciences, CST, Covenant University, Km 10, Idiroko Road, PMB 1023, Ota, Ogun State, Nigeria
Winifred U. Anake
Department of Chemistry, School of Natural and Applied Sciences, CST, Covenant University, Km 10, Idiroko Road, PMB 1023, Ota, Ogun State, Nigeria
*Author to whom correspondence should be addressed.
Abstract
Azo dyes are extremely important in variety of industries for variety of technical purposes. Hence, a series of naphtholic azo dyes 1-9 were synthesized via diazotization of substituted aniline derivatives followed by azo coupling with 2-naphthol. In similar manner, diazotization followed by azo coupling with phenol afforded phenolic azo dyes 10-17 in excellent yields. The chemical structures of all synthesized compounds were confirmed using analytical data and spectroscopic technique which include Uv-visible, IR, Mass spectra, 1H- and 13C-NMR.
Keywords: Azo dye, coupling reaction, diazotization, spectral study, naphthol