Patent ID: 8252924

Claim:
Process for preparing benzomorpholine derivatives of the general formula (I) in which R is hydrogen, or a C 1 -C 10 -alkyl, phenyl or tetrahydrofurfuryl radical, Z 1 to Z 6 are each independently hydrogen or a C 1 -C 10 -alkyl radical and X is oxygen or sulphur, by hydrogenating o-nitrophenoxy carbonyl compounds of the general formula (II) in which R, Z 1 to Z 6 and X are each as defined for formula (I), wherein the hydrogenation of compounds of the general formula (II) is performed with hydrogen gas in the presence a catalyst selected from the group consisting of a molybdenum-, iron-, aluminium-, chromium-doped sponge metal catalyst based on nickel or cobalt and wherein the pH during the hydrogenation is set to a value between 8 and 10.