Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system


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544118, 25230125, C07D48704, D06L 312




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.

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