The synthesis of a series of azo colorants from diazotised arylamines and 4(5)-cyano-5(4)-hydroxyimidazole is described. The dyes exhibit large bathochromic shifts of visible absorption maxima relative to analogous dyes derived from carbocyclic coupling components. Some preliminary spectra data are reported.
Azo dyes from 4(5)-cyano-5(4)-hydroxyimidazole.
VISCARDI, Guido;
1995-01-01
Abstract
The synthesis of a series of azo colorants from diazotised arylamines and 4(5)-cyano-5(4)-hydroxyimidazole is described. The dyes exhibit large bathochromic shifts of visible absorption maxima relative to analogous dyes derived from carbocyclic coupling components. Some preliminary spectra data are reported.
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