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.
碘鎵鹽的分解是使用該
碘鎵鹽進行
氟化反應觀察到的產量變異性的重要因素,該分解是由自由基過程引起的。因此,在反應混合物中加入自由基捕捉劑可以阻止
碘鎵鹽的自由基鏈分解途徑,從而只能發生導致
氟化的反應,使得芳基
氟化物的產量高且重現性好。反應也可以在固相上進行。在溶液和固相中,本發明的首選方法是放射性
氟化。