Process for the preparation of a 2-pyrrolidone

Details Process for the preparation of a 2-pyrrolidone Process for the preparation of a 2-pyrrolidone

C - Chemistry, Metallurgy

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D

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C07D 207/267 (2006.01) C07D 201/08 (2006.01)

Patent

CA 1148960

3149 ABSTRACT Process for the preparation of a 2-pyrrolidone by hydrogenation of optionally substituted succinonitrile in het liquid phase in the presence of ammonia using a fixed-bed catalyst and treatment of the hydrogenated product with water, in which the hydrogenation one or more times is interrupted for regeneration of the catalyst by passing liquid ammonia at 75-130 °C, subsequently hydrogen at 130-350 °C and then liquid ammonia again at 75-130 °C over the catalyst.

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