[18F]Fluorophenyl organometallics as intermediates of no-carrier-added 18F-fluoroarylation reactions
作者:Johannes Ermert、Thomas Ludwig、René Gail、Heinz H. Coenen
DOI:10.1016/j.jorganchem.2007.06.009
日期:2007.9
4-[18F]fluorophenyl compounds of lithium, sodium and magnesium can now also effectively be prepared. Thus, [18F]fluoroarene reagents with a nucleophilic reaction centre are available and suitable among others for the formation of [18F]fluorophenyl compounds with electron donating substituents in the radiosynthesis of 18F-labelled complex organic structures. For these arylation reactions, however, the presence
基于最近可获得的无载体的(nca)1-溴-4- [ 18 F]氟苯,其放射化学收率高,锂,钠和镁的4- [ 18 F]氟苯基化合物现在也可以有效地被用作准备好了。因此,具有亲核反应中心的[ 18 F]氟芳烃试剂是可得到的,并且尤其适用于在放射性合成18 F-标记的复杂有机结构中形成具有给电子取代基的[ 18 F]氟苯基化合物。但是,对于这些芳基化反应,对于所有nca [ 18 F]氟苯基金属,都必须存在宏观量的卤代芳烃作为共反应剂。在18验证了F-氟代芳基化反应中芳基碳,-硅,-硫和-氮键形成的实例,其放射化学产率为20-25%,与[ 18 F]氟化物的起始放射性有关。