Bayer Aktiengesellschaft

Hans-Rolf Furtwangler

Friedrich Schmidt

Kurt Mack

Wolfgang Koebernick

The invention relates, inter alia, to a process for the provision of 6-amino-6-desoxy-2,3-O-isopropylidene-.alpha.-L-sorbofuranose derivatives which comprises treating a 2,3-O-isopropylidene-6-sulphonated-.alpha.-L-sorbofuranase with an amine in an aqueous medium in an autoclave, followed by reaction of the reactions product in a basic medium to provide the free amine of Formula I as described hereinafter. The invention also includes the products obtained by the reaction and the invention further includes the process for providing the compounds of Formula VII as described hereinafter by treatment of a compound of Formula I as described hereinafter with an acid, followed by hydrogenation. The products of the invention are useful as medicaments or intermediates for medicaments.

Process for the production of known and new

A process for the chemical treatment of an effluent containing at least one organic compound selected from the group consisting of an organometallic compound and an organic compound containing at least one of phosphorus, nitrogen and halogen, comprising treating the effluent hydrolytically for about 20 to 200 minutes at a temperature above about 100.degree. C. under a pressure above about 2 bars and a pH of about 1 to 14. Advantageously, a catalyst comprising activated carbon or kieselguhr is added to the effluent before the hydrolytic treatment and the hydrolytic treatment is carried out in the presence of ammonia or a primary or secondary amine. The organic compound may be an acid ester, a dye, or quaternary ammonium compound, a cyanide, a nitrile, a cyanate, an isocyanate, hydrazine, an organic derivative of hydrazine, an azo compound or an organometallic compound and the effluent may be aftertreated as with hypochlorite or H.sub.2 O.sub.2.

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Wuppertal, Germany

Hans-Rolf Furtwangler