VERFAHREN ZUR HERSTELLUNG VON AZO-REAKTIVFARBSTOFFEN

1. Process for the preparation of azo reactive dyestuffs of the general formula see diagramm : EP0043927,P11,F1 wherein D = the radical of a diazo component, K = the radical of a coupling component, B = a direct bond or alkylene-(C1 -C4 ), R = hydrogen or alkyl-(C1 -C4 ), X = a reactive radical of the pyrimidine or of the monofluorotriazine series or the 2,3-dichloroquinoxaline- 6-carboxylic acid radical and n = 1 or 2, and wherein at least one of the radicals D and K contains one or more SO3 H groups, and wherein the grouping see diagramm : EP0043927,P11,F2 can be bonded to the D and/or K radical, and wherein B is bonded directly to a carbocyclic C atom of the D and/or K radical, and wherein, if X represents the 2,3-dichloroquinoxaline-6-carboxylic acid radical, K must represent the radical of a coupling component of the series of naphthols, acylamino-naphthols or 1-phenyl-3-carboxy-5-pyrazolones, with the aid of coupling and acylation steps, characterised in that these coupling and/or acylation steps are carried out in the presence of at least the equimolar amount of a basic lithium compound.