Patent ID: 7393367

Claim:
An agent for dyeing keratin-containing fibers, especially human hair, comprising a cosmetic carrier, and (A) at least one compound of Formula I, wherein each of R 1 , R 2 and R 3 is independently a hydrogen atom, a halogen atom, a C 1 -C 6 alkyl group, a C 2 -C 6 alkenyl group, a hydroxyl group, a C 1 -C 6 alkoxy group, a C 1 -C 6 hydroxyalkyl group, a C 2 -C 6 polyhydroxyalkyl group, a hydroxy C 1 -C 6 alkyloxy group, a sulfonyl group, a carboxyl group, a C 1 -C 6 alkoxycarbonyl group, a hydroxy C 2 -C 6 alkyloxycarbonyl group, a sulfonic acid group, a sulfonamido group, a sulfonamide group, a C 2 -C 6 acyl group, a formyl group, a nitro group, a carbamoyl group —C(O)—NR 4 R 5 , or a —(CH 2 ) n NR 6 R 7 group wherein each of R 4 , R 5 , R 6 and R 7 is independently a hydrogen atom, a C 1 -C 6 alkyl group or a C 2 -C 6 hydroxyalkyl group; and n is number from 0 to 6, wherein R 1 and R 2 can form a 5- or 6-membered aromatic or heteroaromatic ring; and (B) at least one CH-acidic compound.