Rapid Syntheses of [11C]Arylvinyltrifluoromethanes through Treatment of (E)-Arylvinyl(phenyl)iodonium Tosylates with [11C]Trifluoromethylcopper(I)
摘要:
We report a method for labeling arylvinyltrifluoromethanes with carbon-11 (t(1/2) = 20.4 min) as representatives of a new radiolabeled chemotype that has potential for developing radiotracers for biomedical imaging with positron emission tomography. Treatment of (E)-arylvinyl(phenyl)iodonium tosylates (1a - 1k) with [C-11]CuCF3 gave the corresponding [C-11]arylvinyltrifluoromethanes ([C-11]2a-[C-11]2k) in high radiochemical yields (90-97%) under rapid (2 min) and mild (60 degrees C) conditions.
Pd(0)-Mediated <sup>11</sup>C-Carbonylation of Aryl(mesityl)iodonium Salts as a Route to [<sup>11</sup>C]Arylcarboxylic Acids and Derivatives
作者:Stefano Altomonte、Sanjay Telu、Shuiyu Lu、Victor W. Pike
DOI:10.1021/acs.joc.7b01704
日期:2017.11.17
Pd(0)-mediated 11C-carbonylation of aryl(mesityl)iodonium salts followed by suitable quench provides a rapid room-temperature two-pot procedure for labeling arylcarboxylic acids and amide derivatives with the short-lived positron emitter carbon-11 (t1/2 = 20.4 min) in generally good to high yields (up to 71%). High product ring selectivity (≥13) was achieved when using mesityl as a spectator group
[EN] RADIOLABELING AGENTS, METHODS OF MAKING, AND METHODS OF USE THEREOF<br/>[FR] AGENTS DE MARQUAGE ISOTOPIQUE, LEURS PROCÉDÉS DE FABRICATION ET PROCÉDÉS D'UTILISATION
申请人:US HEALTH
公开号:WO2018144101A1
公开(公告)日:2018-08-09
Described herein are labeling agents, specifically [11C]fluoroform, [11C]difluoromethane, [11C]fluoromethyl iodide, [11C]fluoromethyl bromide, [11C]fluoromethyl chloride, [11C]fluoromethyl trifluoromethansulfonate, [11C]difluoromethyl iodide, [11C]difluoromethyl bromide, [11C]difluoromethyl chloride, [11C]difluoromethyl trifluoromethansulfonate, [11C]trifluoromethyl iodide, [11C]trifluoromethyl bromide, [11C]trifluoromethyl chloride, [11C]trifluoromethyl trifluoromethansulfonate, [18F]fluoroform, [18F]difluoromethane, [18F]difluoromethyl bromide or [18F]trifluoromethyl bromide. Also included are methods of labeling precursors to provide labeled fluoroalkanes and imaging methods.
Regioselective N1- or N2-modification of benzotriazoles with iodonium salts in the presence of copper compounds
作者:Dmitry V. Davydov、Vladimir V. Chernyshev、Victor B. Rybakov、Yurii F. Oprunenko、Irina P. Beletskaya
DOI:10.1016/j.mencom.2018.05.019
日期:2018.5
Modification of benzotriazoles with iodonium salts [diphenyl- and ( E )-styrylphenyliodonium tosylates] occurs at the N 1 -position in the presence of K 2 CO 3 as a base and CuI as a catalyst in CH 2 Cl 2 , whereas in the presence of stoichiometric amount of [Cu 2 (TMEDA) 2 (OH) 2 ]Cl 2 complex regioselective N 2 -modification proceeds. Two new Cu I complexes based on benzotriazoles were synthesized