Some new mono azo dye derivatives having Quinazolin-4(3H)-one, 4,4’-(1,3,4-Oxadiazole-2,5-diyl) dianiline and 2,4,6-Trichloro-1,3,5-triazine moieties were synthesized and were evaluated as reactive dyes for the exhaust dyeing of silk, wool and cotton fiber. The title dyes were synthesized from reactions of diazonium salts of 3-(4-(5-(4-Aminophenyl)-1,3,4-oxadiazol-2-yl)phenyl)-2- phenylquinazolin-4(3H)-one with various cyanurated coupling components. The synthesized dyes were applied to silk, wool and cotton fiber and their color fastness to light, washing, and rubbing were also measured. The dyes showed good to moderate affinity to cotton, wool and silk fiber. Spectral properties and colorimetric data (L*, a*, b*, c*, H* and K/S) have also been investigated.
