Fiber reactive dioxazine compound having four vinylsulfone type reactive groups

A dioxazine compound represented by the following formula (I-1) in the free acid form, ##STR160## wherein R.sub.5 is hydrogen, chloro, methyl, methoxy, ethoxy or sulfo, X.sub.1 is ethylene, propylene, phenylene or mono- or di-sulfophenylene, R.sub.6 is hydrogen, methyl or ethyl, and m is 0 or 1.

A process for producing a dioxazine compound represented by the following formula (I) in the free acid form, ##STR161## wherein R is hydrogen, halogeno, alkyl, alkoxy or sulfo, V is a direct linkage or ##STR162## in which R.sub.4 is hydrogen or unsubstituted or substituted alkyl, X is a direct linkage or an aliphatic, araliphatic or aromatic bridging group, B.sub.1 and B.sub.2 independently of one another are each unsubstituted or substituted phenylene or naphthylene, Y.sub.1 and Y.sub.2 independently of one another are each --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z in which Z is a group splittable by the action of an alkali, and R.sub.1, R.sub.2 and R.sub.3 independently of one another are each hydrogen or unsubstituted or substituted alkyl, which comprises subjecting any one of an intermediate dioxazine compound represented by the following formula (II) in the free acid form, ##STR163## wherein R, V, X and R.sub.3 are as defined above, an amine compound represented by the following formula (III), ##STR164## wherein B.sub.1, Y.sub.1 and R.sub.1 are as defined above, and another amine compound represented by the following formula (IV), ##STR165## wherein B.sub.2, Y.sub.2 and R.sub.2 are as defined above, to first condensation reaction with a cyanuric halide, followed by second and third condensation reactions using the remaining ones.

A process for dyeing or printing fiber materials, which comprises using a dioxazine compound represented by the following formula (I) in the free acid form, ##STR166## wherein R is hydrogen, halogeno, alkyl, alkoxy or sulfo, V is a direct linkage or ##STR167## in which R.sub.4 is hydrogen or unsubstituted or substituted alkyl, X is a direct linkage or an aliphatic, araliphatic or aromatic bridging group, B.sub.1 and B.sub.2 independently of one another are each unsubstituted or substituted phenylene or naphthylene, Y.sub.1 and Y.sub.2 independently of one another are each --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z in which Z is a group splittable by the action of an alkali, and R.sub.1, R.sub.2 and R.sub.3 independently of one another are each hydrogen or unsubstituted or substituted alkyl.