Fast and reliable generation of [<sup>18</sup>F]triflyl fluoride, a gaseous [<sup>18</sup>F]fluoride source
作者:A. Pees、C. Sewing、M. J. W. D. Vosjan、V. Tadino、J. D. M. Herscheid、A. D. Windhorst、D. J. Vugts
DOI:10.1039/c8cc03206h
日期:——
[18F]fluoride has been developed, omitting time consuming azeotropic drying procedures. Gaseous [18F]triflyl fluoride is formed instantaneously at room temperature from hydrated [18F]fluoride, followed by distillation in less than 5 minutes into a dry aprotic solvent, in which dry [18F]fluoride is released in presence of base with >90% radiochemical yield. The reactivity of the [18F]fluoride has been
Displacement of a nitro-group by [<sup>18</sup>F] fluoride ion. A new route to aryl flurides of high specific activity
作者:Marina Attiná、Fulvio Cacace、A. P. Wolf
DOI:10.1039/c39830000108
日期:——
Nucleophilic displacement of activated nitro-group by [18F] fluoride ion is an efficient route to 18F-labelled aromatics; these compounds can be in the no-flurine-carrier-added state if required.
Synthesis of 6-acrylamido-4-(2-[18F]fluoroanilino)quinazoline: a prospective irreversible EGFR binding probe
作者:Neil Vasdev、Peter N. Dorff、Andrew R. Gibbs、Erathodiyil Nandanan、Leanne M. Reid、James P. O'Neil、Henry F. VanBrocklin
DOI:10.1002/jlcr.903
日期:2005.2
l)-N,N-dimethylimidoformamide to produce 6-nitro-4-(2-[18F]fluoroanilino)quinazoline in 27.5% decay-corrected radiochemical yield. Acid mediated tin chloride reduction of the nitro group was achieved in 5 min (80% conversion) and subsequent acylation with acrylic acid gave 6-acrylamido-4-(2-[18F]fluoroanilino)quinazoline in 8.5% decay-corrected radiochemical yield, from starting fluoride, in less than
Synthesis of [<sup>18</sup>F]Fluoroarenes by Nucleophilic Radiofluorination of<i>N</i>-Arylsydnones
作者:Maruthi Kumar Narayanam、Gaoyuan Ma、Pier Alexandre Champagne、Kendall N. Houk、Jennifer M. Murphy
DOI:10.1002/anie.201707274
日期:2017.10.9
Easy to handle: A practical radiofluorination of anilines with [18F]fluoride is achieved via N-arylsydnone intermediates. This method displays broad functional group tolerance, is compatible to automation on a commercial radiosynthesis module and can facilitate rapid 18F-labeling of peptides.
Nucleophilic aromatic substitution of activated cationic groups by 18F-labeled fluoride. A useful route to no-carrier-added (NCA) 18F-labeled aryl fluorides
作者:G. Angelini、M. Speranza、A.P. Wolf、C.-Y. Shiue
DOI:10.1016/s0022-1139(00)84987-8
日期:1985.2
relative nucleofugicity of the ammonium group in the nucleophilic substitution reactions surpasses that of the best neutral leavinggroups, including NO2 and F itself. In contrast, radiofluoride incorporation into aromatic rings other cationic substrates, such as aryldimethylsulfonium perchlorates, is prevented by the fast methyl group transfer from the starting compound to the nucleophiles present. The use