Azo dyes

A compound having the structural Formula (I) or (II), a tautomer, a quaternary form, or a salt thereof,

• wherein
• R1 is selected from the group consisting of hydrogen, C1-6alkyl, C3-8cycloalkylamino, amino, hydroxyl, C1-6alkylamino, C6-12arylamino, haloC6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, C1-6alkoxycarbonyl, aminocarbonyl, C1-6alkylaminocarbonyl, —N═N—CH═CH—C6-12arylene-hydroxyl, —N═N—C6-12arylene-SO3H, and —SO2—CH═CH2;
• R2a is hydrogen or —SO3H;
• R2b is hydrogen or —SO3H;
• wherein at least one of R2a or R2b is —SO3H;
• R3 is selected from the group consisting of hydrogen, halogen, —SO3H, C1-6alkyl, amino, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C6-10aryloxy, C1-6alkoxyC1-6alkyl, C1-6alkoxycarbonyl, carboxyl, aminocarbonyl, C1-6alkylaminocarbonyl, and —NH-phenylene-SO2—CH═CH2;
• R4 is selected from the group consisting of hydrogen, halogen, amino, —SO3H, C1-6alkyl, carboxyl, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, C1-6alkoxycarbonyl, aminocarbonyl, and C1-6alkylaminocarbonyl;
• R5 is selected from the group consisting of hydrogen, halogen, amino, nitro, —SO3H, C1-6alkyl, hydroxyl, carboxyl, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, aminocarbonyl, and C1-6alkylaminocarbonyl;
• R6 is selected from the group consisting of hydrogen, halogen, amino, C1-6alkyl, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, aminocarbonyl, and C1-6alkylaminocarbonyl;
• R7 is selected from the group consisting of hydrogen, halogen, amino, C1-6alkyl, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, C1-6alkoxycarbonyl, carboxyl, aminocarbonyl, C1-6alkylaminocarbonyl, —C(OH)═CH—OH, and —NH-phenylene-SO2—CH═CH2;
• R8 is hydrogen or —SO3H;
• R9 is hydrogen or —SO3H;
• R10 is selected from the group consisting of hydrogen, halogen, C1-6alkyl, amino, hydroxyl, C1-6alkylamino, C3-8cycloalkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, aminocarbonyl, and C1-6alkylaminocarbonyl;
• and
• R11 is selected from the group consisting of hydrogen, C1-6alkyl, amino, halogen, hydroxyl, C1-6alkylamino, C6-12arylamino, C1-6alkoxy, C1-6alkoxyC1-6alkyl, aminocarbonyl, and C1-6alkylaminocarbonyl.