A continuous process of preparing 5-amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide, an intermediate for synthesizing non-ionic X-ray contrast agents

A continuous process of preparing 5-amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide, an intermediate for synthesizing non-ionic X-ray contrast agents

This invention relates to an improved method for the synthesis of 5-amino-N,N'- bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide (Compound B), an intermediate in the industrial preparation of non-ionic X-ray contrast agents. In particular, it relates to a continuous process of the iodinatio...

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Bibliographische Detailangaben
Hauptverfasser: HOLMAAS, LARS, TERJE, SOERENSEN, THORE, JARLE, ASKILDSEN, ARNE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:This invention relates to an improved method for the synthesis of 5-amino-N,N'- bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide (Compound B), an intermediate in the industrial preparation of non-ionic X-ray contrast agents. In particular, it relates to a continuous process of the iodination reaction of 5-amino-N,N'-bis(2,3-dihydroxypropyl-isophthalamide (ABA) or ABA-HCl followed by the purification of Compound B.