A unique Pummerer type mechanism via fluorosulphonium ions for anodic monofluorination of sulphides is established by comparing the anodic monofluorination of partially halogenated ethyl phenyl sulphides (1, PhSCH2R; R = CF3, CF2H, CFH2, CF2Cl, CClH2) with their anodic methoxylation; simple alkyl phenyl sulphides 2 bearing no electron-withdrawing group could be monofluorinated anodically in satisfactory yields for the first time when tetrahydrofuran was used as a solvent.
通过比较部分卤化的
乙基苯硫醚(1,PhSCH2R;R =
CF3,
CF2H, CFH2,
CF2Cl, CClH2)的阳极单
氟化与其阳极甲氧基化,建立了一种通过
氟磺
铵离子的独特Pummerer型机制。简单的不带有电子吸引基团的烷基苯
硫醚(2)在使用
四氢呋喃作为溶剂时,首次能够满足产率地进行阳极单
氟化反应。