Product for dyeing keratinic fibers, especially human hair, comprises a nitrobenzaldehyde derivative and a pyrimidinium derivative

摘要

Product for dyeing keratinic fibers comprises a nitrobenzaldehyde derivative (I) and a pyrimidinium derivative (II). Product for dyeing keratinic fibers comprises a nitrobenzaldehyde derivative of formula (I) and a pyrimidinium derivative of formula (II). R1>, R2> = H, 1-6C alkyl, 2-6C alkenyl, 1-6C hydroxyalkyl, (1-6C)alkoxy(2-6C)alkyl or 2-6C polyhydroxyalkyl. R1>, R2>1-6C (cyclo)alkyl, 2-6C alkenyl, optionally substituted (hetero)aryl, aryl(1-6C)alkyl, 1-6C hydroxyalkyl, 2-6C polyhydroxyalkyl, (1-6C)alkoxy(1-6C)alkyl or (CH2)pNR'R"; R', R" : H, 1-4C alkyl, 1-4C hydroxyalkyl or aryl(1-6C)alkyl, or together form a 5- to 7-membered ring; p : 2-6; R3>, R5>H or 1-6C alkyl, at least one being alkyl; R4>H, 1-6C alkyl, 1-6C hydroxyalkyl, 2-6C polyhydroxyalkyl, 1-6C alkoxy, 1-6C hydroxyalkoxy or (CH2)pNR'R", or forms a 5- or 6-membered aromatic ring with R3> or R5>, the ring being optionally substituted with halo, 1-6C alkyl, 1-6C hydroxyalkyl, 2-6C polyhydroxyalkyl, 1-6C alkoxy, 1-6C hydroxyalkoxy, NO2, OH or (CH2)pNR'R"; Y1>O, S or NR; R : H, (hetero)aryl, 1-6C alkyl or aryl(1-6C)alkyl; X : an anion. [Image].