Decomposition of iodonium salts by a free radical process has been identified as a significant factor in the observed yield variability of fluoridation reactions using said iodonium salts. Accordingly, the inclusion of a free radical trap in the reaction mixture blocks the radical chain decomposition pathway for iodonium salts such that only the reaction leading to fluoridation can occur and the yield of aryl fluoride becomes high and reproducible. The reaction may also be carried out on solid phase. In both the solution and the solid phase the preferred method of the present invention is radiofluoridation.
碘鎓盐的分解通过自由基过程已被确认为使用该
碘鎓盐进行
氟化反应观察到的产量变异的一个重要因素。因此,在反应混合物中加入自由基捕获剂,阻止
碘鎓盐的自由基链分解途径,从而只发生导致
氟化的反应,使芳基
氟化物的产量高且重现性好。该反应也可在固相上进行。在溶液和固相中,本发明的首选方法是放射性
氟化。