Oxidative Desulfurization-Difluorination
of Alkyl Aryl Thioethers: Synthesis of ω-Substituted
1,1-Difluoroalkanes
作者:Günter Haufe、Verena Hugenberg
DOI:10.1055/s-0028-1087278
日期:——
An efficient new pathway towards Ï-substituted gem-difluoroalkanes from corresponding aryl alkyl thioethers by oxidative desulfurization-difluorination with the reagents combination of 1,3-dibromo-5,5-dimethylhydantoin (DBH) as the oxidizer and pyridine-nonakis(hydrogen fluoride) as the fluoride source is described. Two succeeding fluoro-Pummerer-like rearrangements are suggested as a possible reaction mechanism.
本文描述了一种通过氧化脱
硫-二
氟化反应从相应的芳基烷基
硫醚合成Β-取代的二氟烷的有效新途径,该反应使用
1,3-二溴-5,5-二甲基海因(DBH)作为氧化剂,
吡啶-九
氟(
氢氟酸)作为
氟源。本文提出了两种连续的
氟-普默勒式重排反应作为可能的反应机理。