Efficient Pathway for the Preparation of Aryl(isoquinoline)iodonium(III) Salts and Synthesis of Radiofluorinated Isoquinolines
作者:Zheliang Yuan、Ran Cheng、Pinhong Chen、Guosheng Liu、Steven H. Liang
DOI:10.1002/anie.201606381
日期:2016.9.19
to assemble aryl(isoquinoline)iodonium salts in 40–94 % yields from mesoionic carbene silver complex and Aryl‐I‐Py2(OTf)2. The method is general, practical, and compatible with well‐functionalized molecules as well as useful for the preparation of a wide range of 18F‐labeled isoquinolines resulting in up to 92 % radiochemical conversion. As proof of concept, a fluorinated isoquinoline alkaloid, 18F‐aspergillitine
碘鎓化合物在含有非活化芳烃的放射性药物的18 F-氟化中发挥着关键作用。然而,这些物质的制备仅限于氧化条件或与由芳基卤化物制备的有机金属的交换。在此,我们描述了一种新颖的“一锅法”方法,由介离子卡宾银络合物和 Aryl-I-Py 2 (OTf) 2组装芳基(异喹啉)碘鎓盐,产率为 40-94% 。该方法通用、实用,与功能良好的分子兼容,可用于制备各种18 F 标记的异喹啉,放射化学转化率高达 92%。作为概念证明,氟化异喹啉生物碱18 F-曲霉碱由相应的苯基(曲霉碱)碘鎓盐制备而成,分离放射化学收率为 10%。