Novel One-Pot Synthesis of Xanthones via Sequential Fluoride Ion-Promoted Fries-Type Rearrangement and Nucleophilic Aromatic Substitution
作者:Takashi Matsumoto、Yuuki Fujimoto、Ryohei Itakura、Hiroki Hoshi、Hikaru Yanai、Yoshio Ando、Keisuke Suzuki
DOI:10.1055/s-0033-1339881
日期:——
A novel and efficient synthesis of xanthones is described. 2-(Trimethylsilyl)phenyl 2-fluorobenzoate derivatives undergo Fries-type rearrangement and intramolecular SNAr reaction in a one-pot sequential manner under fluoride ion-promoted mild conditions. The method provides efficient access to xanthones that have significant steric congestion around the C9 carbonyl, which are not readily available
描述了一种新型有效的氧杂蒽酮合成方法。2-(三甲基甲硅烷基)苯基 2-氟苯甲酸酯衍生物在氟离子促进的温和条件下以一锅顺序方式进行 Fries 型重排和分子内 SNAr 反应。该方法提供了对在 C9 羰基周围具有显着空间拥塞的氧杂蒽酮的有效获取,这些氧杂蒽酮不容易通过常规方法获得。