Process for the preparation of primary mono- and diamines from oxo compounds

摘要

Primary amines and/or diamines can be prepared from oxo compounds, optionally containing additional reducible groups, by a process comprising: (1) reacting the oxo compound with ammonia in the presence of an imine-forming catalyst, preferably an ion exchanger loaded with ammonia ions, at a temperature of 10 DEG to 120 DEG C. and a pressure of 1 to 300 bar, whereby a Schiff base is formed; and (2) reducing the Schiff base by reaction with ammonia and hydrogen in the presence of a hydrogenation catalyst.