Patent ID: 7455698

Claim:
4-(Pyrazol-4-ylimino)-2,5-cyclohexadienylidene-ammonium salt of the general formula (I) in which R1 is a C 1 -C 6 -alkyl group, a C 1 -C 4 -hydroxyalkyl group, a C 2 -C 4 -dihydroxyalkyl group or a C 2 -C 6 -alkoxy-(C 1 -C 2 )-alkyl group, a phenyl group, a benzyl group or a substituted benzyl group; R3 and R4, independently of one another, are hydrogen, a C 1 -C 6 -alkyl group, a C 1 -C 4 -hydroxyalkyl group, a C 2 -C 4 -dihydroxyalkyl group or a C 1 -C 4 -alkoxy-(C 1 -C 4 )alkyl group, or R3 and R4 together form a four-membered to eight-membered aliphatic ring; R2 and R6, independently of one another, are hydrogen, a C 1 -C 4 -alkyl group, a C 1 -C 4 -hydroxyalkyl group, a phenyl group, a substituted phenyl group, a halogen atom or a substituted aminomethyl group; R5 is a cyano group, a —NR10C(O)R11 group or a sulphonamide group; R7 and R8, independently of one another, are a C 1 -C 6 -alkyl group, an unsaturated C 3 -C 6 -alkyl group, a C 2 -C 4 -hydroxyalkyl group, a C 3 -C 4 -dihydroxyalkyl group, a C 2 -C 4 -aminoalkyl group, a C 2 -C 4 -dimethylaminoalkyl group, a C 2 -C 4 -acetylaminoalkyl group, a C 2 -C 4 -methoxyalkyl group, a C 2 -C 4 -ethoxyalkyl group, a C 1 -C 4 -cyanoalkyl group, a C 1 -C 4 -carboxyalkyl group or a C 1 -C 4 -aminocarbonylalkyl group, or R7 and R8, together with the nitrogen atom, form a ring of the formula R9 is hydrogen or one or more hydroxyl groups, carboxyl groups, aminocarbonyl groups or hydroxymethyl groups; R10 is hydrogen or a C 1 -C 6 -alkyl group; R11 is hydrogen, a C 1 -C 6 -alkyl group, an amino group, an alkylamino group, a dialkylamino group, a phenyl group or a substituted phenyl group; and X − is an anion.