| 摘要 |
A process for the preparation of benzene- and naphthalenesulphonyl- ethane- beta -sulphonic acid salts of the general formula (1> R-SO2-CH2-CH2-SO3Z(1> in which R denotes a phenyl or naphthyl group which can be substituted by fluorine, chlorine or bromine atoms, or hydroxyl, amino, alkyl-C1-C6, alkoxy-C1-C6, trifluoromethyl, carboxamide, -NH-alkyl-C1-C6, -N-(alkyl-C1-C6)2, -SO2-NH2, -SO2- NH(alkyl-C1-C6) or -SO2N(alkyl-C1-C6)2 groups, and Z represents an alkali metal or alkaline earth metal atom or the ammonium group, preferably a sodium atom, by reacting an optionally ring-substituted benzene- or naphthalenesulphonylethanol of the general formula (2> R-SO2-CH2-CH2-OH(2), in which R has the abovementioned meaning, with a mixture of ammonium hydrogen sulphite and ammonia in water at temperatures from about 140 DEG C to about 180 DEG C.
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