The present invention relates to a hydrogenation process for the preparation of aromatic amino compounds containing directly on the aryl ring or in a side chain one or more entities that may also undergo hydrogenation, such as carbon multiple bonds, nitrile groups, imino groups or carbonyl groups. The preparation is carried out by catalytic hydrogenation of the corresponding aromatic nitro compounds in the presence of a phosphorus-modified noble metal catalyst. The invention relates also to the use of modified noble metal catalysts for the hydrogenation of aromatic nitro compounds containing carbon multiple bonds and/or substituted by nitrile, imino or carbonyl groups.
本发明涉及一种氢化工艺,用于制备含有直接存在于芳基环上或侧链中的一个或多个实体的芳香族
氨基化合物,该实体还可以发生氢化,例如碳多重键,腈基,
亚胺基或羰基。该制备是通过在
磷改性
贵金属催化剂存在下对应的芳香族
硝基化合物的催化氢化来实现的。本发明还涉及改性
贵金属催化剂用于氢化含有碳多重键和/或被腈基,
亚胺基或羰基取代的芳香族
硝基化合物的用途。