Bicyclic copper complex formazan compounds having a fiber-reactive group of the vinyl sulfone series, containing a fiber-reactive group suitable as dyestuffs

A copper complex formazan compound of the formula ##STR14## in which:

• A is the benzene or naphthalene ring, both of which are necessarily substituted by the indicated sulfo group --S0.sub.3 M (where M has the meaning given below) in the ortho-position relative to the N-atom of the hydrazone component, and both of which are, a part from the indicated groups --SO.sub.3 M and Z, unsubstituted or substituted by one to three substituents selected from the group consisting of halogen, nitro, alkyl of 1 to 5 C-atoms, lower alkylaminoalkyl, alkoxy of 1 to 4 C-atoms, hydroxy, alkylsulfonyl of 1 to 4 C-atoms, phenylsulfonyl, sulfamoyl, N-mono-alkylsulfamoyl with an alkyl of 1 to 4 C-atoms, N,N-dialkylsulfamoyl with alkyls of 1 to 4 C-atoms, lower alkanoylamino, aroylamino, N-monoalkylamino with an alkyl of 1 to 4 C-atoms, N,N-dialkylamino with alkyls of 1 to 4 C-atoms, phenyl and phenylsulfamoyl;
• B is phenyl or a naphthyl, each of which is unsubstituted or substituted by substituents selected from the group consisting of hydroxy, nitro, halogen, alkyl of 1 to 5 C-atoms, alkoxy of 1 to 4 C-atoms, carbalkoxy of 2 to 5 C-atoms, amino, N-mono-alkylamino with an alkyl of 1 to 4 C-atoms, N,N-di-alkylamino with alkyls of 1 to 4 C-atoms and phenylsulfamoyl, or
• B is the monovalent radical of the furan, thiophene, pyrrole, imidazole, pyrazole, pyridine, quinoline or benzimidazole,unsubstituted or substituted by substituents selected from the group consisting of lower alkyl, lower alkoxy, chlorine, benzyl,phenethyl and phenyl, or
• B is hydrogen, carboxy, cyano or nitro or a straightchain or branched alkyl group of 1 to 8 C-atoms or a straight-chain or branched alkenyl of 2 to 8 C-atoms, these alkyl and alkenyl are unsubstituted or substituted by phenyl or phenyl substituted by substituents selected from the group consisting of methyl, ethyl, methoxy, ethoxy, fluorine, chlorine, bromine and sulfamoyl;
• M is hydrogen or the equivalent of an alkali or alkaline earth metal;
• X is hydrogen or sulfo;
• m is 1 or 2;
• n is 1 or 2;
• Z is hydrogen or a group which confers water-solubility, one or both of which--besides the sulfo group necessarily required in the ortho-position relative to the N-atom of the hydrazone component A--are bonded to A on an aliphatic or aromatic carbon atom of A, preferably on an aromatic nucleus;
• Z.sup.1 is hydrogen or a group which confers water-solubility, one or both of which are bonded to B on an aliphatic or aromatic carbon atom of B, preferably on an aromatic nucleus;
• Z and Z.sup.1 together denoting not more than three sulfo groups, if X is a sulfo group;
• Y is vinyl or a group of the formula --CH.sub.2 --CH.sub.2 --E, in which E is a substituent which can be eliminated under alkaline conditions.