A continuous acetylation process in synthesis of non-ionic...

Details A continuous acetylation process in synthesis of non-ionic... A continuous acetylation process in synthesis of non-ionic...

C - Chemistry, Metallurgy

07

C

C07C 231/02 (2006.01) C07C 237/46 (2006.01)

Patent

CA 2710131

This invention relates to an improved method for the synthesis of 5-acetamido- N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide ("Compound A"), an intermediate in the industrial preparation of non-ionic X-ray contrast agents. In particular, it relates to a continuous process of acetylation of 5-amino-N,N'-bis(2,3- dihydroxypropyl)- 2,4,6-triiodo-1,3-benzenedicarboxamide ("Compound B") followed by the removal of acetic anhydride.

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