Silylium ions facilitate the catalytic direct cross-coupling of aryl fluorides with simple arenes and alkanes. This C–H arylation approach is initiated by silylium ion-mediated fluoride abstraction, which is followed by Friedel–Crafts or C–H insertion reactions of the resulting phenyl cation equivalents. An o-silyl group in the fluoroarene substrate is the key for selective intermolecular transformations, stabilizing the aryl cation intermediate and serving as an internal silylium ion precursor.

中文翻译：

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硅烷离子促进的C（sp ²）–F键活化对未活化的C–H键的催化C–H芳基化作用

硅离子有助于芳基氟化物与简单的芳烃和烷烃的催化直接交叉偶联。这种C–H芳基化方法是由甲硅烷基离子介导的氟化物抽象引发的，随后是Friedel–Crafts或C–H插入反应生成的苯基阳离子当量。一个Ó在fluoroarene基板-甲硅烷基是用于选择性的分子间的转换键，稳定的芳基阳离子中间体和用作内部甲硅烷鎓离子前体。