Synthesis and fastness properties of styryl and azo disperse dyes derived from 6‐nitro substituted 3‐aryl‐2‐methyl‐4(3<i>H</i>)‐quinazolinone

Bhatti, Harjinder Singh; Seshadri, S.

doi:10.1111/j.1478-4408.2004.tb00221.x

Cited by 56 publications

(8 citation statements)

References 17 publications

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“…It is well known that the λ max values of the hydrazone tautomeric form of an azo dyes will show a general shift to shorter wavelengths when substituents of increasing electron withdrawing strength are introduced into the ring of the diazo component. In contrast, electron donor substituents produce strong bathochromic shifts [2]. The results presented in Tables 1 and 2 are in agreement with these conclusions.…”

Section: Resultssupporting

confidence: 83%

Synthesis, structure and solvatochromic properties of some novel 5-arylazo-6-hydroxy-4-phenyl-3-cyano-2-pyridone dyes

Alimmari

Mijin

Vukićević

et al. 2012

Chemistry Central Journal

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BackgroundA series of some novel arylazo pyridone dyes was synthesized from the corresponding diazonium salt and 6-hydroxy-4-phenyl-3-cyano-2-pyridone using a classical reaction for the synthesis of the azo compounds.ResultsThe structure of the dyes was confirmed by UV-vis, FT-IR, 1H NMR and 13C NMR spectroscopic techniques and elemental analysis. The solvatochromic behavior of the dyes was evaluated with respect to their visible absorption properties in various solvents.ConclusionsThe azo-hydrazone tautomeric equilibration was found to depend on the substituents as well as on the solvent. The geometry data of the investigated dyes were obtained using DFT quantum-chemical calculations. The obtained calculational results are in very good agreement with the experimental data.

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Section: Resultssupporting

confidence: 83%

Synthesis, structure and solvatochromic properties of some novel 5-arylazo-6-hydroxy-4-phenyl-3-cyano-2-pyridone dyes

Alimmari

Mijin

Vukićević

et al. 2012

Chemistry Central Journal

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“…Azo compounds are very important in the field of dyes, pigments and advanced materials (Klaus, 2003). It has been known for many years that the azo compounds are the most widely used class of dyes, due to their versatile applications in various fields such as the dyeing of textile fibers, the coloring of different materials, colored plastics and polymers, biological-medical studies and advanced applications in organic synthesis (Bahatti & Seshadri, 2004;Catino & Farris, 1985;Fadda et al, 1994;Taniike et al, 1996;Zollinger, 2003).…”

Section: Methodsmentioning

confidence: 99%

(E)-2-Acetyl-4-[(3-methylphenyl)diazenyl]phenol: an X-ray and DFT study

Yazıcı¹,

Albayrak²,

Gümrükçüoğlu³

et al. 2010

Acta Cryst E

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The title compound, C15H14N2O2, an azo dye, displays a trans configuration with respect to the N=N bridge. The dihedral angle between the aromatic rings is 0.18 (14)°. There is a strong intramolecular O—H⋯O hydrogen bond. Geometrical parameters, determined using X-ray diffraction techniques, are compared with those calculated by density functional theory (DFT), using hybrid exchange–correlation functional, B3LYP and semi-empirical (PM3) methods.

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“…known for many years that the azo compounds are the most widely used class of dyes, due to their versatile applications in various field such as dyeing of textile fibers, the coloring of different meterials, colored plastic and polymers, biological-medical studies and advanced applications in organic synthesis (Bahatti & Seshadri, 2004;Catino & Farris, 1985;Fadda et al 1994;Taniike et al 1996;Zollinger 2003).…”

Section: Methodsmentioning

confidence: 99%