A robust method of room temperature direct arylation for benzofuran is reported. This discovery allows for mild arylation by commercially available aryl iodides with complete C-2 regioselectivity and tolerates a range of functional groups, including heat sensitive groups. Mechanistically, a Heck-type oxyarylation product from a direct arylation process is reported as a key piece of evidence for a carbopalladation intermediate.

中文翻译：

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芳基碘对苯并呋喃的室温 C-H 芳基化

报告了苯并呋喃的室温直接芳基化的稳健方法。这一发现允许通过具有完全 C-2 区域选择性的市售芳基碘化物进行温和的芳基化，并耐受一系列官能团，包括热敏基团。从机制上讲，来自直接芳基化过程的 Heck 型氧芳基化产物被报告为碳钯化中间体的关键证据。