| abstract |
Vic-triazole compounds of the formula WHEREIN X and Y stand for O or NR, R1 stands for a mononuclear aromatically carbocyclic or aromatically heterocyclic radical, R stands for hydrogen, a (possibly substituted alkyl, aralkyl, cycloalkyl, aryl or alkoxycarbonyl radical, and WHEREIN THE AROMATIC AND HETEROCYCLIC RADICALS MAY CONTAIN FURTHER NON-CHROMOPHORIC SUBSTITUENTS WITH THE EXCEPTION OF THE NITRO-GROUP, AND A may additionally be fused by a 5- or 6-membered carbocyclic ring, ARE USEFUL AS OPTICAL BRIGHTENING AGENTS FOR ORGANIC MATERIALS. |