Fluorescent reactive dyes, process for the production thereof and their use

A dye of formula (I)

• wherein in each case independent from each other
• W is O, S or NH,
• R1 and R2 is hydrogen, alkyl, alkyl substituted by one or more substituents selected from the group consisting of methoxy, hydroxy, sulfato, sulfo and chloro, aryl, aryl substituted by one or more substituents selected from the group consisting of chloro, acetylamino, sulfo, hydroxy, carboxy, (C1-C4)-alkanoyl, (C1-C4)-alkoxy and (C1-C4)-alkyl or benzyl, R3 and R4 is hydrogen, alkyl, hydroxy, aryl, cycloalkyl, alkoxy, thioalkoxy, N-acylamino, N-cinnamoylamino, halogen, cyano, SO3M, COOM, nitro, acyl, thioacyl, alkylsulfonyl, aryloyl, trifluoromethyl, heteroaryl, heterocycloalkyl, alkoxycarbonyl, alkoxythiocarbonyl, acyloxy, aryloyloxy or SO2—X,
• wherein X is vinyl or CH2CH2—Y,
• wherein Y is a group removable under alkaline conditions,
• Z− is selected from the group consisting of halogen, sulfate, alkylsulfonate, benzolsulfonate, toluolsulfonate, tetraborofluorate and acetate,
• A1 and A2 is a spacer of formula (2d)
• whereby the respective spacer A1/A2 is attached to the chromophore at the * position and to the respective reactive anchor T1/T2 at the ** position, and wherein
• d is an integer from 1 to 4,
• e is an integer from 0 to 3,
• f is an integer from 0 to 3,
• Q is O, NH or S,
• R6 is hydrogen, halogen, alkyl, N-acylamino, alkoxy, thioalkoxy, hydroxy, alkoxycarbonyl, acyl, arylol, acyloxy, aryloyloxy, cycloalkyl, aryl, SO3M or COOM,
• T1 and T2 is a reactive anchor of formula (3d), (3e) or SO2—X
• whereby the respective reactive anchor T1/T2 is attached to the respective spacer A1/A2 at the *** position, and wherein
• X is vinyl or CH2CH2—Y,
• wherein Y is a group removable under alkaline conditions,
• and
• M is hydrogen, lithium, sodium, potassium, ammonium, mono-, di-, tri- or tetra-(C1-C4)-alkylammonium, one equivalent of an alkali earth metal or a monovalent organic cation.