DERIVATIVES OF 1-(3-TERT-BUTYL-4-HYDROXY-8-METHYLPYRAZOLO[5,1-C][1,2,4]TRIAZINE-1(4H)-YL)-2,2-DIFLUOROETHANONES, METHOD FOR THEIR PRODUCTION AND THEIR USE AS ACID PHOTOGENERATORS Russian patent published in 2021 - IPC C07D487/04 G03G5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to derivatives of 1-(3-tert-butyl-4-hydroxy-8-methylpyrazolo[5,1-c][1,2,4]triazine-1(4H)-yl)-2,2-difluoroethanones of the general formula (I), which can be used as acid photogenerators in organic solvent solutions and in an optically transparent polymer. In formula (I), R¹ is hydrogen, and R² is chlorine, or R¹ is bromine, and R² is chlorine or fluorine. The invention also relates to a method for producing derivatives of 1-(3-tert-butyl-4-hydroxy-8-methylpyrazolo[5,1-c][1,2,4]triazine-1(4H)-yl)-2,2-difluoroethanones of the general formula (I), where R¹ is hydrogen or bromine, and R² is chlorine or fluorine. The method consists in the fact that a mixture of 7-R¹-3-tert-butyl-8-methylpyrazolo[5,1-c][1,2,4]triazine and 2-R²-2,2-difluoroacetic anhydride, where R¹ and R² have the above values, taken in an equimolar ratio, is treated with water.

EFFECT: obtaining acid photogenerators.

3 cl, 13 dwg, 3 tbl, 7 ex