19-08-2014, 11:09 AM
Heterocyclic disperse dyes are known to impart high tinctorial strength, these dyes are not only important for their excellent properties on polyester; but also used in non textile applications such as medicinal chemistry, dye lasers , non linear optics etc. 2-Cyanomethyl benzimidazole is reacted with o-amino thiophenol to give key intermediate 2-(1H-benzimidazol-2-ylmethyl)-1,3-benzothiazole. It was then condensed with aldehydes and nitroso derivatives to give styryl and aza-styryl based colourants. Styryl colourants of 9-formyl-8- methoxyjulolidine were cyclised to give quinolinojulolidin based cationic colourant.
Heterocyclic disperse dyes are known to impart high tinctorial strength, these dyes are not only important for their excellent properties on polyester; but also used in non textile applications such as medicinal chemistry, dye lasers , non linear optics etc. 2-Cyanomethyl benzimidazole is reacted with o-amino thiophenol to give key intermediate 2-(1H-benzimidazol-2-ylmethyl)-1,3-benzothiazole. It was then condensed with aldehydes and nitroso derivatives to give styryl and aza-styryl based colourants. Styryl colourants of 9-formyl-8- methoxyjulolidine were cyclised to give quinolinojulolidin based cationic colourant.