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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2004, Volume 55, Issue 1,





Cationic Dyes Derivatives of Compact Condensed System 2-Aminothiazolo<4,5-b>Quinoxalin-6-Carboxilic Acid
Cristiana Radulescu, Corneliu Tarabasanu Mihaila

Abstract:

The synthesis of cationic dyes what include thiazole-quinoxalinic heterocycle systems will allow treating the theoretical and synthetical preparation problems concerning synthesis of the heterocycle systems illegible in the speciality literature. The special biological activities of the thiazolic ring determined scientists to study and to apply them in many areas and there are series of precursors of heterocyclic azo dyes deriving from thiazolo-quinoxalines. This paper presents the synthesis of the cationic dyes derivatives from heterocycle systems with thiazolic ring, studied the use of chemical, elemental, UV-VIS, NMR and infrared analyses confirming proposed the structure and the results in dyeing polyacrylic fibers (intense and brightness color, fastness to washing, fastness to perspiration, fastness to boiling and to blenching, exposure to sunlight, ability to be absorbed at the beginning and retained by the fiber). The relationship between chemical structure of some cationic dyes and perspiration/light fastness is discussed. Keywords: 2-aminothiazolo[4,5-b]chinoxalin-6-carboxilic acid, dimethylsulfate, cationic dye, polyacrylic fiber


Issue: 2004, Volume 55, Issue 1
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