The present invention relates to a process for the preparation of given carboxamido compounds, in particular of 2,4,6-triiodoisophthalic acid derivatives, as useful intermediates for the preparation of X-ray contrast media among which is iopamidol. The said process comprises reacting suitable N-sulfinyl intermediate compounds with a commercially available α-hydroxyacid or a salt thereof.
本发明涉及一种制备特定羧酰胺化合物的方法,特别是2,4,6-三
碘异酞酸衍
生物,作为制备X射线造影剂的有用中间体之一,其中包括
碘酸伊帕米德。所述方法包括将适当的N-亚磺酰基中间体化合物与商业上可获得的α-羟基酸或其盐反应。