The present invention concerns a process for the preparation of organo-iodized compounds, as well as their preparation intermediates. More particularly, the present invention concerns a process for the preparation of organo-iodized compounds which can be used as preparation intermediates in the synthesis of iodized contrast agents.本發明涉及一種用於製備有機碘化化合物及其製備中間體之方法。更特別地,本發明涉及一種用於製備在碘化造影劑的合成中可以用作製備中間體的有機碘化化合物之方法。