Wasserloesliche Monoazofarbstoffe und Verfahren zu ihrer Herstellung

摘要

1354906 Amino benzene derivatives FARBWERKE HOECHST AG 17 Aug 1971 [17 Aug 1970] 38530/71 Heading C2C [Also in Division C4] 4 - Aminobenzoic acid N1 - γ - (# - hydroxyethyl - sulphonyl) - propylamide is prepared by reacting allyl-amine with 4-nitrobenzoyl chloride to give N-allyl-4-nitrobenzamide which is condensed with 2-mercapto-ethanol and the product oxidized to give 4-nitrobenzoic acid- N1 - γ - (# - hydroxyethylsulphonyl) - propylamide which is finally reduced with 4 - Aminobenzoic acid - N - γ - (# - hydroxyethylmercapto)-propylamide is prepared by condensing 2-mercapto-ethanol with allylamine to give γ - aminopropyl - (# - hydroxyethyl)- sulphide which is condensed with 4-nitrobenzoyl chloride and the NO 2 group reduced. 3 - Aminobenzene - sulphonic acid - N1 - methyl - N - # - (#1 - hydroxyethyl - sulphonyl)- ethylamide is prepared by condensing 2-mercapto - ethanol with 2 - chloro - ethyl - N - methylamine to give #-N-methyl-aminoethyl-(#1-hydroxyethyl)-thioether which is condensed with 3-nitrobenzenesulphochloride, the product oxidized to the sulphone and the NO 2 group reduced.