作者:Ba V. Nguyen、Donald J. Burton
DOI:10.1016/0022-1139(93)03058-t
日期:1994.6
4-Iodotetrafluoropyridine and 4-bromotetrafluoropyridine react readily with acid-washed cadmium or zinc powder in DMF at room temperature to give the 2,3,5,6-tetrafluoropyridylcadmium or 2,3,5,6-tetrafluoropyridylzinc reagent in quantitative yield. Metathesis of the cadmium or zinc reagent with CuBr at room temperature gives the stable 2,3,5,6-tetrafluoropyridylcopper reagent. The 2,3,5,6-tetrafluoropyridylcopper reagent couples with allylic halides, vinyl iodides, aryl iodides and acyl halides to give the corresponding adducts in high yield.