3-(2,5-Diaminophenyl)-acrylamide derivatives and colouring agents containing said compounds

3-(2,5-Diaminophenyl)acrylamide derivatives of general formula (I) or physiologically tolerated, water-soluble salts thereof

• 10
• wherein
• R1, R2, R3 and R4 can be equal or different and independently of each other denote hydrogen, a C1-C6-alkyl group, a C2-C4-hydroxyalkyl group or a C3-C4-dihydroxyalkyl group or R1 and R2 or R3 and R4 form a four-membered to eight-membered aliphatic ring and at least two of the R1 to R4 groups denote hydrogen;
• R5 denotes hydrogen, a halogen atom, a C1-C4-alkyl group, a C1-C4-hydroxyalkyl group or a C1-C4-alkoxy group;
• R6 and R7 can be equal or different and independently of each other denote hydrogen, a C1-C2-alkoxy, C1-C6-alkyl, unsaturated C3-C6-alkyl, C2-C4-hydroxyalkyl, C3-C4-dihydroxyalkyl, C2-C4-aminoalkyl, C2-C4-dimethylaminoalkyl, C2-C4-acetylaminoalkyl, C2-C4-methoxyalkyl, C2-C4-ethoxyalkyl, C2-C4-cyanoalkyl, C1-C4-carboxyalkyl, C2-C4-aminocarbonylalkyl, pyridylmethyl, furfuryl, hydrogenated furfuryl, substituted pyridyl group, a group of formula (II)
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• a group of formula (III)
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• or a group of formula (IV)
• 13
• or R6 and R7 form a ring of formula
• 14
• R8, R9 and R21 can be equal or different and independently of each other denote hydrogen or a C1-C6-alkyl group;
• R10 denotes hydrogen, a carboxy group or an aminocarbonyl group;
• R11 and R12 can be equal or different and independently of each other denote hydrogen, a hydroxyl, aminocarbonyl or methylthiomethyl group, a phenyl-substituted or hydroxyl-substituted phenyl group or a group of formula
• 15
• R13, R14, R15, R16 and R17 can be equal or different and independently of each other denote hydrogen, a halogen atom, a cyano group, a hydroxyl, C1-C4-alkoxy, C1-C4-hydroxyalkoxy, C1-C6-alkyl, C1-C4-alkylthioether, mercapto, nitro, amino, alkylamino, hydroxyalkylamino, dialkylamino, di(hydroxyalkyl)amino, (dihydroxyalkyl)amino, (hydroxyalkyl)alkylamino, trifluoromethane, —C(O)H, —C(O)CH3, —C(O)CF3, —Si(CH3)3, C1-C4-hydroxyalkyl or C2-C4-dihydroxyalkyl group or two adjacent R13 to R17 groups together form an —O—CH2—O—bridge;
• R18 denotes a C1-C4-alkyl, benzyl or C1-C4-hydroxyalkyl group;
• R19 denotes hydrogen or a C1-C8-alkyl group, and
• R20 denotes hydrogen, a hydroxyl, carboxy, aminocarbonyl or hydroxymethyl group.