Fast and Efficient<sup>18</sup>F-Labeling by [<sup>18</sup>F]Fluorophenylazocarboxylic Esters
作者:Stefanie K. Fehler、Simone Maschauer、Sarah B. Höfling、Amelie L. Bartuschat、Nuska Tschammer、Harald Hübner、Peter Gmeiner、Olaf Prante、Markus R. Heinrich
DOI:10.1002/chem.201303409
日期:2014.1.7
Introduction of [18F]fluoride ion into the aromatic core of phenylazocarboxylic esters was achieved in only 30 seconds, with radiochemical yields of up to 95 % (85(±10) %). For labeling purposes, the resulting 18F‐substituted azoester can be further converted in radical‐arylation reactions to give biaryls, or in substitutions at its carbonyl unit to produce azocarboxamides.
Catalyst-Free Aromatic Radiofluorination via Oxidized Iodoarene Precursors
作者:Young-Do Kwon、Jeongmin Son、Joong-Hyun Chun
DOI:10.1021/acs.orglett.8b03450
日期:2018.12.21
Oxidizediodoarenes (OIAs), prepared via mCPBA-mediated oxidation, have been demonstrated as versatile precursors for the synthesis of [18F]fluoroarenes in the absence of catalysts. OIAs have been identified as intermediates in single-pot syntheses of iodonium salts and ylides but have never been recognized as radiofluorinationprecursors. Here, the isolated OIAs were used without any catalysts to
Scalable <sup>18</sup>F processing conditions for copper-mediated radiofluorination chemistry facilitate DoE optimization studies and afford an improved synthesis of [<sup>18</sup>F]olaparib
作者:Gregory D. Bowden、Nantanat Chailanggar、Bernd J. Pichler、Andreas Maurer
DOI:10.1039/d1ob00903f
日期:——
A convenient and scalable base-free method for processing [18F]fluoride as [18F]TBAF is reported and applied to copper-mediated radiofluorination radiosyntheses. A central feature of this method is that a single production of [18F]TBAF can be divided into small aliquots that can be used to perform multiple small-scale reactions in DoE optimization studies. The results of these studies can then be reliably
Copper-Mediated Radiofluorination of Arylstannanes with [<sup>18</sup>F]KF
作者:Katarina J. Makaravage、Allen F. Brooks、Andrew V. Mossine、Melanie S. Sanford、Peter J. H. Scott
DOI:10.1021/acs.orglett.6b02911
日期:2016.10.21
A copper-mediated nucleophilic radiofluorination of aryl- and vinylstannanes with [18F]KF is described. This method is fast, uses commercially available reagents, and is compatible with both electron-rich and electron-deficient arene substrates. This method has been applied to the manual synthesis of a variety of clinically relevant radiotracers including protected [18F]F-phenylalanine and [18F]F-DOPA
Synthesis of18F-labelled biphenyls via SUZUKI cross-coupling with 4-[18F]fluoroiodobenzene
作者:Björn Steiniger、Frank R. Wuest
DOI:10.1002/jlcr.1099
日期:2006.8
The SUZUKI reaction of organoboron compounds with 4-[18F]fluoroiodobenzene has been developed as a novel radiolabelling technique in 18F chemistry. The cross-coupling reaction of p-tolylboronic acid with 4-[18F]fluoroiodobenzene was used to screen different palladium complexes, bases and solvents. Optimized reaction conditions (Pd2(dba)3, Cs2CO3, acetonitrile, 60°C for 5 min) were further applied to