Process for production of cyclic N-vinyl carboxylic acid amide

Details Process for production of cyclic N-vinyl carboxylic acid amide Process for production of cyclic N-vinyl carboxylic acid amide

1997-03-18

1998-09-01

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D207408

Patent

active

058012524

ABSTRACT:
There is provided a process for producing a cyclic N-vinyl carboxylic acid amide stably in safety and low cost, using, as starting raw materials, a cyclic carboxylic acid ester and monoethanolamine both available inexpensively and easily. The process comprises subjecting a cyclic carboxylic acid ester and monoethanolamine to an intermolecular dehydration reaction (a first-step reaction) in a liquid phase to produce a cyclic N-(2-hydroxyethyl) carboxylic acid amide and then subjecting the cyclic N-(2-hydroxyethyl) carboxylic acid amide to an intramolecular dehydration reaction (a second-step reaction) in a gas phase in the presence of an oxide catalyst containing an alkali metal element and/or an alkaline earth metal element and silicon, to produce a cyclic N-vinyl carboxylic acid amide.

REFERENCES:
patent: 2669570 (1954-02-01), Schnizer
Tsuneki, Hideaki et. al., Development of Process for Ethylenimine Production, Nipon Kagaku Kaishi (11), 1209-1216, 1993.
Chemical Abstracts, vol. 125, No. 9, 3 Mar. 1997, Columbus, Ohio, Cui, Yingde et al: Study on preparation of poly(vinylpyrrolidone), p. 624 & Xiandai Huagong (1966), 16(6), 36-37 coden: HTKUDJ; ISSN 0253-4320, 1966.

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