Hypervalent iodine-mediated gem-difluorination of vinyl halides enabled by exclusive 1,2-halo migration
作者:Chenglong Li、Yangzhen Liao、Xuemei Tan、Xiaozu Liu、Peijun Liu、Wen-Xin Lv、Honggen Wang
DOI:10.1007/s11426-021-9965-9
日期:2021.6
β-Difluorinated alkyl halides are of significant value in the modular synthesis of gem-difluorinated molecules. An exclusive 1,2-halo migratory gem-difluorination of vinyl halides with in situ-generated PhIF2·HF is described. This protocol provides a general and practical approach towards a wide variety of β-difluorinated alkyl bromides. Both α- and β-bromoalkyl alkenes are suitable substrates, leading