Heterogeneous fluorination of allylic halides by the combination of lead fluoride and a sodium salt
作者:Junko Ichihara、Yoshio Takai、Terukiyo Hanafusa、Kiyoshi Tomioka
DOI:10.1016/0022-1139(94)03161-r
日期:1995.3
composite solid reagent consisting of lead(II) fluoride and a small amount of sodium bromide has been found to facilitate the fluorination of allylic halides in acetonitrile to afford a mixture of the corresponding and rearranged fluorides in the ratio of 1:1 to 1:2. Such allylic rearrangement is not observed when KF/18-crown-6 or tetrabutylammonium fluoride are employed.
已发现由氟化铅(II)和少量溴化钠组成的复合固体试剂有助于在乙腈中氟化烯丙基卤化物,从而以1:1至1:1的比例提供相应的和重排的氟化物的混合物。 2。当使用KF / 18-crown-6或氟化四丁基铵时,未观察到这种烯丙基重排。