[EN] METHODS FOR CARBON ISOTOPE LABELING SYNTHESIS BY RHODIUM-PROMOTED CARBONYLATION VIA ISOCYANATE USING AZIDES AND CARBON-ISOTOPE MONOXIDE<br/>[FR] PROCEDES POUR LA SYNTHESE DE MARQUAGE PAR ISOTOPE DU CARBONE REALISEE PAR CARBONYLATION, CATALYSEE PAR DU RHODIUM, PAR L'INTERMEDIAIRE D'ISOCYANATE, AU MOYEN D'AZIDES ET DE MONOXYDE D'ISOTOPE DE CARBONE
申请人:GE HEALTHCARE LTD
公开号:WO2005061445A1
公开(公告)日:2005-07-07
Methods and reagents for rhodium-promoted carbonylation via isocyanate using carbon-isotope labeled carbon monoxide are provided. The resultant carbon isotope labeled compounds are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
Synthesis of<sup>11</sup>C-labelled N,N′-diphenylurea and ethyl phenylcarbamate by a rhodium-promoted carbonylation via [<sup>11</sup>C]isocyanatobenzene using phenyl azide and [<sup>11</sup>C]carbon monoxide
The reaction with phenylazide and [11C]carbon monoxide to give N,N'-diphenyl[11C]urea and ethylphenyl[11C]carbamate has been studied with the aim of development of a new methodology for carbonylation using [11C]carbon monoxide with high specific radioactivity. The synthesis of 11C-labelled N,N'-diphenylurea from phenylazide and [11C]carbon monoxide, with 1,2-bis(diphenylphosphino)ethane-bound Rh(I)