v-Triazolyl-[4,5-d]-pyrimidines of the formula ##STR1## wherein Q is a mono- or disubstituted amino radical, R is an optionally substituted alkyl or aryl group and the benzene ring A can carry one or two substituents. The compounds are suitable as fluorescent whitening agents for organic material of high molecular weight, especially polyamide. The compounds are obtained by starting from a 4-aminopyrimidine which is correspondingly substituted in the 2- and 6-position, coupling it with the diazonium salt of an optionally substituted aniline and oxidising the resultant azo compound to the triazolylpyrimidine.
该公式为 ##STR1## 的v-Triazolyl-[4,5-d]-pyrimidines,其中Q是一个单取代或双取代的
氨基基团,R是一个可选取代的烷基或芳基基团,苯环A可以携带一个或两个取代基。该化合物适用于高分子有机材料,特别是聚酰胺的
荧光增白剂。该化合物是通过从4-
氨基嘧啶开始,相应地在2-和6-位置上进行取代,将其与可选取代的
苯胺的重氮盐偶联,并将所得的偶氮化合物氧化为三唑基
嘧啶而获得的。