3-Hydroxy-2-(trialkylsilyl)phenyl triflates are presented as new versatile hydroxyaryne precursors. These are base-activated aryne precursors induced via a C-sp²-to-O 1,3-Brook rearrangement. The reaction of various arynophiles and 3-trialkylsiloxybenzyne generated from 3-hydroxy-2-(trialkylsilyl)phenyl triflate efficiently afforded highly regioselective phenol derivatives. Furthermore, through crossover experiments, the intramolecular mechanism of silyl migration was demonstrated.

中文翻译：

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3-羟基-2-（三烷基甲硅烷基）苯基三氟甲磺酸酯：通过1,3-C-sp ² -O甲硅烷基迁移引发的苯炔前体

3-羟基-2-（三烷基甲硅烷基）苯基三氟甲磺酸酯是新的通用羟基芳烃前体。它们是通过C-sp ² -O-O 1,3-Brook重排诱导的碱活化的芳烃前体。由3-羟基-2-（三烷基甲硅烷基）苯基三氟甲磺酸酯产生的各种亲嗜碱和3-三烷基甲硅烷氧基苯并ben的反应有效地提供了高度区域选择性的苯酚衍生物。此外，通过交叉实验，证明了甲硅烷基迁移的分子内机理。