Anthraquinone derivatives

1-Aminoanthraquinone sulphonic amides substituted in the 4-position by an amino group having identical or different hydrogen, aliphatic, alicyclic, aromatic or aliphatic-aromatic radicals, and in which the sulphonic amide group may be similarly substituted, are obtained by treating the 1-amino-4-halogen-anthraquinone sulphonic amides with the required primary or secondary amine or ammonia and the products may be sulphonated. The reaction is carried out in the customary manner with or without catalysts. The sulphonic amides may be obtained by the process of Specification 397,190 followed by condensation with ammonia or an amine. According to examples, (1) 1 - amino - 4 - bromoanthraquinone-2-sulphohexylamide is treated with aniline, and 1-amino-4-methoxybenzene, to give dark blue products; (2) 1 - amino - 4 - bromanthraquinone-2-sulphomethyl or ethylanilide-sulphonic acid obtainable by sulphonating the sulphamides are treated with p-toluidine to give blue wool dyes, and the former compound unsulphonated is treated with cyclohexylamine followed by sulphonation to give a similar product; (3) 1-amino-4-anilido-anthraquinone-2-sulphanilide, and 1-amino-4-cyclohexylamine - anthraquinone - 2 - sulphomethylamide, obtained respectively from the 2-sulphochlorides via the 2-sulphamides and aniline or cyclohexylamine are sulphonated to give blue wool dyes still containing a sulphamide group.