Preparation of N-alkenylpyrrolidones

Details Preparation of N-alkenylpyrrolidones Preparation of N-alkenylpyrrolidones

1994-01-27

1995-04-25

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548543, C07D20726

Patent

active

054100704

ABSTRACT:
Process for the preparation of N-alkenylpyrrolidones of the general formula ##STR1## in which R denotes hydrogen or C.sub.1 -C.sub.20 alkyl, by the reaction of an N-alkylpyrrolidone of the general formula ##STR2## in which R has the aforementioned meanings, and x and Y stand for OH, C.sub.1 -C.sub.20 alkoxy or C.sub.2 -C.sub.20 alkoxycarbonyl, provided that one of the two radicals x and denotes hydrogen, at temperatures ranging from 200.degree. to 600.degree. C. and pressures ranging from 0.1 to 5 bar, wherein the process is carried out in the presence of an acid heterogenous catalyst except for an oxide of a Group IIb, Group IIIb, Group IVb, and Group VIb metal.

REFERENCES:
patent: 2669570 (1954-02-01), Schnizer
patent: 3377340 (1963-04-01), Hartwimmer et al.
patent: 3526620 (1970-09-01), Bestian et al.
patent: 3821245 (1974-06-01), Kanetaka et al.
Chemical Abstracts, vol. 79, No. 11, 17. Sep. 1973, abstract No. 66172v.
Chemische Berichte, Bohme et al, Jul. 1966, Weinheim de Seiten 2127-2135.
Izv. Akad. SSSR, (1961) 901-905.

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