Preparation of N-alkylpiperidines and N-alkylpyrrolidines

Details Preparation of N-alkylpiperidines and N-alkylpyrrolidines Preparation of N-alkylpiperidines and N-alkylpyrrolidines

1981-07-15

1983-05-31

Schwartz, Richard A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548579, C07D29502

Patent

active

043862080

ABSTRACT:
N-Alkylpiperidines or N-alkylpyrrolidines are obtained by hydrogenating a corresponding N-alkyldicarboxylic acid imide over a fixed catalyst by first working to only partial conversion, for example of about 50%, and distilling off the required product together with water from the partially converted mixture, where appropriate with recycling of the unconverted remainder.

REFERENCES:
patent: 2837524 (1958-06-01), Oberrauch
Paden, J. et al., J.A.C.S., 58, (1936), 2487.

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