Process for the synthesis of citroconimides

Details Process for the synthesis of citroconimides Process for the synthesis of citroconimides

C - Chemistry, Metallurgy

07

D

C07D 207/448 (2006.01) C07C 51/56 (2006.01) C07C 51/567 (2006.01) C07D 207/452 (2006.01) C07D 307/60 (2006.01)

Patent

CA 2059449

The present invention relates to an improved synthesis method for the making of citraconimides wherein a citraconic anhydride is reacted with 0.5 to 2.0 equivalents of at least one amine salt. This process may be carried out in a solvent and generally leads to excellent yields of the citraconimides with high selectivity and easy purification. The present invention also relates to a process for the production of citraconic anhydride from itaconic anhydride with an amine or phosphine catalyst and in a cosolvent.

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