Method for conversion of ethylidene N,N'-bis-pyrrolidone into 2-

Details Method for conversion of ethylidene N,N'-bis-pyrrolidone into 2- Method for conversion of ethylidene N,N'-bis-pyrrolidone into 2-

1989-08-24

1990-07-03

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20712

Patent

active

049392735

ABSTRACT:
A method for conversion of ethylidene N,N'-bis-pyrrolidone, a by-product of the vinylation of 2-pyrrolidone, into 2-pyrrolidone starting material. This method is carried out by heating the by-product at an elevated temperature for a predetermined period of time, and recovering the 2-pyrrolidone conversion product therefrom for recycle into the vinylation process.

REFERENCES:
patent: 2317804 (1943-04-01), Reppe et al.

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