The present invention relates to a process for the preparation of iodinated anilines; in particular, it relates to a process including the direct iodination, with suitably activated iodine, of 3,5-disubstituted anilines to the corresponding 3,5-disubstituted-2,4,6-triiodoanilines, which are useful intermediates for the synthesis of x-ray contrast media, and to the preparation of the contrast media themselves.

Process for the iodination of aromatic compounds

The present invention describes a process for the synthesis of a iodinating agent, being said iodinating agent iodine chloride (ICI.) In particular, the present invention relates to a process for the electrochemical preparation of ICI, as a useful iodinating agent in the preparation of iodinated organic compounds for use as contrast agents or their precursors in the synthesis of the same.

Process for the preparation of a iodinating agent

FIELD: chemical industry, inorganic chemistry, chemical technology. ^ SUBSTANCE: invention relates to technology for processing mineral raw, in particular, to a method for preparing iodine monochloride hydrochloride solution. Method for preparing iodine monochloride hydrochloride solution comprises chemical interaction of iodine-containing reagent and potassium iodate in hydrochloric acid solution. Chemical interaction is carried out by continuous stirring crystalline iodine as iodine-paste and potassium iodate in hydrochloric acid solution taken in the ratio crystalline iodine : potassium iodate = (12.5:5.3)-(2.36:1.0) at the environment temperature up to the complete reaction. Invention provides enhancing the safety level of the process, reducing energy consumption, labor intensity and the cost of the end product. ^ EFFECT: improved preparing method.

Asadova Nina Sergeevna

Papers

Method for preparing iodine monochloride hydrochloride solution