Abstract: Water-soluble fiber-reactive dyes are described conforming to the below-indicated formula (1) which are capable of dyeing hydroxyl- and/or carboxamido-containing material, in particular fiber material, such as wool and in particular cellulose fiber materials, in strong, fast shades. ##STR1## in which F is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, triphenoldioxazine, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, formazan, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye;R.sup.x is hydrogen or alkyl of 1 to 4 carbon atoms;R is hydrogen, sulfo, carboxyl, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or chlorine;w is 1, 2, 3 or 4;Y is vinyl or an ethyl group which contains in the .beta.-position a substituent which is eliminable by alkali to form a vinyl group;n is 1 or 2.