Verfahren zur Herstellung von Anthrachinon-alpha-sulfonsaeuren

摘要

1314120 Anthraquinone-α-sulphonic acid BAYER AG 20 Aug 1971 [21 Aug 1970] 39195/71 Heading C2C Anthraquinone-α-sulphonic acid is prepared by reacting anthraquinone with a sulphonating agent in the presence of a solvent and a catalyst comprising a metal of Group Ib or VIII of the Periodic Table or a compound containing such a metal. The sulphonating agent, e.g. SO 3 , may also act as the solvent. Preferred catalysts are palladium and ruthenium and compounds containing these metals. The preferred reaction temperature is 50‹ to 180‹ C.