| abstract |
New diamines in which at least one NH2- group is bonded to a secondary aliphatic C atom are manufactured by hydrogenating compounds which contain at least one oxo group in the molecule and correspond to the following formula WHEREIN A denotes a lower alkyl group with one to six carbon atoms, R denotes a divalent, linear or branched aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic or heterocyclic-aliphatic hydrocarbon radical which is optionally interrupted by ether oxygen atoms and X denotes a radical of the formulae IN THE PRESENCE OF AMMONIA AND A SUITABLE HYDROGENATION CATALYST, UNDER PRESSURE. |