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Patent / Jan 01, 2007
Process for the manufacture of iohexol by the alkylation of 5-acetamido-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide with 1-chloro-2,3-propanediol using 2-(2-methoxyethoxy)ethanol as the reaction solvent
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WO 2007060380
A process for the prodn. of iohexol comprises alkylating 5-acetamido-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide with 1-chloro-2,3-propanediol using 2-(2-methoxyethoxy)ethanol as the reaction solvent the presence of a base (e.g., sodium hydroxide).
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