Abstract: A process for the preparation of N-alkylhalogenoanilines of the formula (I) 100.degree. ##STR1## in which X is a chlorine or bromine atom and n is the number 1 or 2, R.sup.1 is an alkyl (C.sub.1 -C.sub.4) radical, R.sup.2 an alkyl (C.sub.1 -C.sub.6) radical or R.sup.1 and R.sup.2 together with the carbon atom can form a five- or six-membered cycloalkane ring, by reacting a halogenonitrobenzene of the formula (II) ##STR2## in which X and n have the abovementioned meanings with an at least stoichiometric amount of a carbonyl compound of the formula (III) ##STR3## in which R.sup.1 and R.sup.2 have the meanings mentioned or R.sup.1 and R.sup.2 together with the carbon atom of the carbonyl group can form a five- or six-membered cycloalkane ring, in an inert organic solvent at temperatures of about 10 to about 100.degree. C., at a hydrogen superatmospheric pressure of about 0 to about 50 bar, in the presence of a platinum catalyst on activated carbon.

Abstract: Compounds of the formula (1) ##STR1## in which X denotes a sulfur atom or the group ##STR2## in which R denotes a hydrogen atom, an alkylene-C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 - or alkyl-C.sub.1 -C.sub.6 - group, each of which can be substituted by hydroxyl, sulfo, carboxyl or cyano groups, R.sub.1 denotes a hydrogen atom or an alkyl-C.sub.1 -C.sub.6 -group which can be substituted by --SO.sub.3 M or COOM groups (where M denotes an H, Li, Na, K or Ca atom), hydroxyl, amino, methylamino, acetylamino, alkyl-C.sub.1 -C.sub.4 -sulfonylamino, methoxy, ethoxy, .beta.-hydroxyethylsulfonyl, phenyl, monosulfophenyl, disulfophenyl, or 4-[.beta.-hydroxyethylsulfonyl]-2-sulfophenyl groups, or represents a phenyl or naphthyl group, each of which can be substituted by --SO.sub.3 M or COOM groups (where M denotes an H, Li, Na, K or Ca atom), alkyl-C.sub.1 -C.sub.4 -, alkoxy-C.sub.1 -C.sub.4 -, amino, methylamino, alkyl-C.sub.1 -C.sub.4 -sulfonylamino or acetylamino groups, and R.sub.

Abstract: A process for the preparation of arylaminonitrophenyl hydroxyethyl sulfones of the formula (1) ##STR1## in which Z denotes the radical ##STR2## in which R.sub.1 denotes a hydrogen atom or an --NH.sub.2, --NH--R or --N(R).sub.2 group, R representing a C.sub.1 -C.sub.4 -alkyl group, R.sub.2 denotes a hydrogen atom, a C.sub.1 -C.sub.4 -alkyl group or a C.sub.1 -C.sub.4 -alkoxy group, R.sub.3 represents a hydrogen, chlorine or bromine atom or a sulfonic acid, sulfonamide, carboxylic acid, carboxamide, hydroxyl, carbomethoxy, carboethoxy or hydroxyethylsulfonyl group, R.sub.4 denotes a hydrogen, chlorine or bromine atom or a sulfonic acid, carboxylic acid, hydroxy or C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl group, it being possible for 1-3 different R.sub.1 -R.sub.3 substituents, not more than two of which may, however, be identical, to be present in the radical Z.sub.a, and for 1-4 different R.sub.1 -R.sub.

Abstract: Process for the preparation of 2-nitro-4-sulfamyldiphenylamine dyestuffs of the formula (1) ##STR1## in which R.sub.1 and R.sub.2 each denote a hydrogen, chlorine or bromine atom or a C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy group or a phenoxy group which can be substituted on the benzene nucleus by chlorine or bromine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or trifluoromethyl groups, or denote a naphthoxy group, and R.sub.2 can also be an -N-(C.sub.1 -C.sub.4 -alkyl).sub.2, -NH-(C.sub.1 -C.sub.4 -alkyl), -NH-(C.sub.1 -C.sub.4 -alkanoyl) or -NH-benzoyl group, and R.sub.3 and R.sub.4 each denote a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.4 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl group, and R.sub.4 can also be a phenyl group which can be substituted by chlorine or bromine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, -N-(C.sub.1 -C.sub.4 -alkyl).sub.2, -NH-(C.sub.1 -C.sub.4 -alkyl), -NH-(C.sub.1 -C.sub.