Substituted 1,4-diaminobenzene compounds and oxidation dye precursor compositions containing same

A substituted 2,5-diamino-1-aminomethylbenzene compound selected from the group consisting of 2-((2-amino-phenylamino)-methyl)-1,4-diaminobenzene;

• 2-((3-aminophenyl-amino)-methyl)-1,4-diaminobenzene;
• 2-((4-aminophenylamino)methyl)-1,4-diaminobenzene;
• 2-((4-bis(2-hydroxyethyl)aminophenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-dimethylamino-phenylamino)methyl)-1,4-diamino-benzene;
• N1,N1-bis(hydroxyethyl)-2-((3-aminophenylamino)-methyl)-1,4-diaminobenzene;
• N1,N1-bis(hydroxyethyl)-2-((4-amino-phenylamino)-methyl)-1,4-diaminobenzene, N1,N1-bis(hydroxyethyl)-2-((4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N1-dihydroxypropyl-2-((4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N1-dihydroxypropyl-2-((4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N1-dihydroxy-propyl-2-((4-dimethylaminophenylamino)-methyl)-1,4-diaminobenzene;
• N4,N4-bis(hydroxyethyl)-2-((3-aminophenylamino)-methyl)-1,4-diaminobenzene;
• N4, N4-bis(hydroxyethyl)-2-((4-aminophenylamino)-methyl)-1,4-diaminobenzene;
• N4, N4-bis(hydroxy-ethyl)-2-((4-bis(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N4, N4-bis(hydroxyethyl)-2-((4-dimethylamino-phenyl-amino)-methyl)-1,4-diaminobenzene;
• N4-dihydroxypropyl-2-((4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N4-dihydroxypropyl-2-((4-bis(2-hydroxy-ethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• N4-dihydroxypropyl-2-((4-dimethylamino-phenylamino)-methyl)-1,4-diamino-benzene;
• 2-((2-(2-hydroxyethyl)aminophenylamino)-methyl)-1,4-diamino-benzene;
• 2-((2-(pyrrolidin-1-yl)-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-dihydroxypropylamino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-methylamino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-(pyrrolidin-1-yl)-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-dihydroxypropylamino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-methylamino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-(pyrrolidin-1-yl)-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-dihydroxypropylamino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-methylamino-phenylamino)-methyl)-1,4-diamino-benzene;
• 2-((2-(2-hydroxyethyl)-4-amino-phenylamino) methyl)-1,4-diamino-benzene, 2-((2-(2-hydroxyethyl)-4-bis(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-chloro-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-chloro-4-bis(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-methoxy-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-methoxy-4-bis(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-methyl-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((2-methyl-4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-(2-hydroxyethyl)-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-(2-hydroxyethyl)-4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-chloro-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-chloro-4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-methoxy-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-methoxy-4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-methyl-4-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((3-methyl-4-bis(2-hydroxyethyl)amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-(2-hydroxyethoxy)-3-amino-phenylamino)-methyl)-1,4-diaminobenzene;
• 2-((4-(2-hydroxyethoxy)-3-bis(2-hydroxyethyl)amino-phenyl amino)-methyl)-1,4-diaminobenzene;
• 2-((4-(2-hydroxyethyl)-3-amino-phenylamino)-methyl)-1,4-diaminobenzene and 2-((4-(2-hydroxyethyl)-3-bis(2-hydroxyethyl)-amino-phenylamino)-methyl)-1,4-diaminobenzene.

An oxidation dye precursor composition for dyeing keratin fibers, said oxidation dye precursor composition containing at least one substituted 2,5-diamino-1-aminomethylbenzene compound of formula (I), or a physiologically compatible water-soluble salt thereof,

• wherein R1, R2, R3, R4, R5, R6 and R7, independently of each other, each represent hydrogen, a C1- to C6-alkyl group, a C1- to C4-hydroxyalkyl group, a C2- to C4-dihydroxyalkyl group or a C1- to C4-alkoxy-(C1- to C2-)alkyl group or at least one pair selected from the group consisting of R1 and R2;
• R3 and R4;
• and R5 and R6 together with the N atom form a four-member to eight-member aliphatic ring, with the proviso that at least two of said R1 to R6 each represent said hydrogen;
• R8 represents hydrogen, a halogen atom, a C1- to C4-alkyl group, a C1- to C4-hydroxyalkyl group or a C1- to C4-alkoxy group;
• R9 represents hydrogen, a halogen atom, a cyano group, a hydroxy group, a C1- to C4-alkoxy group, a C1- to C4-hydroxyalkoxy group, a C1- to C6-alkyl group, a C1- to C4-alkylthioether group, a mercapto group, an amino group, a C1- to C4-alkylamino group, a C1- to C4-hydroxyalkylamino group, a di(C1- to C4-alkyl)amino group, a di(C1- to C4-hydroxyalkyl)amino group, a {dihydroxy(C2- to C4)-alkyl}amino group, a (C1- to C4-hydroxyalkyl)-C1-C4-alkylamino group, a trifluoromethane group, a C1-C4-hydroxyalkyl group or a C3-C4 dihydroxyalkyl group;
• and
• R10 represents hydrogen or a C1- to C6-alkyl group.