Process for making N-alkylpyrrolidones

Details Process for making N-alkylpyrrolidones Process for making N-alkylpyrrolidones

1987-03-30

1989-03-21

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548543, 548548, 548554, C07D20108, C07D207267, C07D207404

Patent

active

048144649

ABSTRACT:
An improved process for making N-alkylpyrrolidones from a maleic derivative or a succinic derivative which involves catalytically reducing the maleic derivative with hydrogen to succinic anhydride, if the maleic derivative is the starting point, converting succinic anhydride to a N-alkylsuccinimide by ammonolysis-alkylation with a C.sub.1 and C.sub.4 alkanol and ammonia, and catalytically reducing the resulting N-alkylsuccinimide to the N-alkylpyrrolidone.

REFERENCES:
patent: 3198808 (1965-08-01), Himmele et al.
patent: 3448118 (1969-06-01), Chichery et al.
patent: 3812148 (1974-05-01), Hollstein et al.

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