| abstract |
Procedure for the racemization of optically active amines of the ** formula ** in which R1 and R2 are different, and R1, R2, R3 which means alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl, and heterocyclic moieties, and R3 represents additionally hydrogen (H), the substituent moieties selected from the group alkyl, cycloalkyl, alkoxy, aryloxy, amino, alkylamino and dialkylamino being capable of being carried out, by reacting the optically active amine in the presence of hydrogen and a hydrogenating or dehydrogenating catalyst at temperature elevated, characterized in that the reaction is carried out in the gas phase. |