Cascade iodination–fluorination synthesis of 2-fluorothiophene and 5-fluoro-2-thienyliodonium salts
作者:Petro P. Onys’ko、Tetyana V. Kim、Olena I. Kiseleva、Yuliya V. Rassukana、Andrei A. Gakh
DOI:10.1016/j.jfluchem.2009.02.001
日期:2009.5
synthesis of fluorine-containing 2-thienyliodonium salts was accomplished using cascade iodination–fluorination. According to this methodology, thiophene is first converted to bis(2-thienyl)iodonium hexafluorophosphate using an electrophilic iodination reaction. Upon heating with potassium fluoride, this salt undergoes regioselective fluorination producing 2-fluorothiophene. 2-Fluorothiophene is then
含氟的2-噻吩基碘鎓盐的第一个合成是使用级联碘化-氟化来完成的。根据该方法,首先使用亲电子碘化反应将噻吩转化为六氟磷酸双(2-噻吩基)碘鎓。与氟化钾一起加热后,该盐进行区域选择性氟化,生成2-氟噻吩。然后将2-氟噻吩再次碘化,得到氟噻吩碘鎓盐。