The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2024
Filed:
Sep. 22, 2022
Bracco Imaging S.p.a., Milan, IT;
Luciano Lattuada, Cassina de' Pecchi, IT;
Camilla Cavallotti, Novara, IT;
Giovanni Battista Giovenzana, Novara, IT;
Fulvio Uggeri, Codogno, IT;
Alessandro Minguzzi, Milan, IT;
Alberto Vertova, Treviglio, IT;
Letizia Sorti, Dalmine, IT;
Carlo Morelli, Cambiago, IT;
BRACCO IMAGING S.P.A., Milan, IT;
Abstract
The invention is related to a process for preparing a iodinating X-rays contrast agent. More specifically, it relates to a process for the preparation of N,N'-bis-(2,3-dihydroxypropyl)-5-hydroxy-2,4,6-triiodo-1,3-benzenedicarboxaniide (I) by electrochemical iodination of N,N′-(2,3-dihydroxypropyl)-5-hydroxy-1,3-benzenedicarboxamide (II) with molecular iodine (I2) which is in situ electrochemically generated from a source of iodide ions (I−). The iodide ions (I−) are obtained by the dissolution of hydrogen iodide (HI) or an alkali metal iodide in the reaction medium or produced during the reaction of N,N′-(2,3-dihydroxypropyl)-5-hydroxy-1,3-benzenedicarboxamide with I2. The invention also relates to the use of the intermediate compound of formula (I), obtained through the above electrochemical iodination of compound (II), in the preparation of N,N′-bis[2,3-dihydroxypropyl]-5(hydroxyacetyl)methylamino]-2,4,6-triiodo-1,3-benzenedicarboxamide (iomeprol).