Process for the preparation of citraconic anhydride

Details Process for the preparation of citraconic anhydride Process for the preparation of citraconic anhydride

1996-06-19

1998-10-20

Robinson, Allen J.

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

Organic compounds

Carboxylic acid anhydrides

568355, 435126, C07C 5156, C07C 4566, C12P 1704

Patent

active

058248200

ABSTRACT:
The present invention relates to a novel process for the preparation of citraconic anhydride. More precisely, the invention relates to a process for the preparation of citraconic anhydride from a starting material comprising itaconic acid.
The process for the preparation of citraconic anhydride may be performed continuously starting from itaconic acid, or continuously or in a batchwise manner starting directly from a fermentation broth of itaconic acid or of by-products from the manufacture of itaconic acid.

REFERENCES:
patent: 2385283 (1945-09-01), Kane et al.
patent: 2966498 (1960-12-01), Humphrey
patent: 5231016 (1993-07-01), Cros
patent: 5457040 (1995-10-01), Jarry et al.

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