| abstract |
Diamines of the formula <IMAGE> (I) where R1, R2 and R3 are each hydrogen, alkyl, aryl, alkoxy, aralkyl or cycloalkyl and X is a group of the formula (CR4R5)m (II) where R4 and R5 have the meanings given above for R1 and m is from 1 to 12, are prepared by a process in which a diamine of the formula <IMAGE> (III) where R1, R2 and X are the groups described above, is reacted with an olefin of the formula <IMAGE> (IV) where R6 and R9 are each hydrogen or alkyl which is straight-chain in the alpha -position, in the presence of a zeolite as a catalyst. |