this key motif is of vital importance. Yb(OTf)3-catalyzed addition of 2- or 4-methyl azaarenes to isatins via C-H functionalization was developed. Moderate to good yields were obtained for various isatins and azaarenes. This method provides rapid protocol for the synthesis of biologically important azaarene-substituted 3-hydroxy-2-oxindoles in one step. The success of this reaction expands the synthetic
摘要 3-取代-3-羟基-2-羟
吲哚富含一系列具有
生物活性的
天然产物和药物,开发构建这一关键基序的有效方法至关重要。开发了 Yb(OTf)3 催化通过 CH 官能化将 2-或 4-
甲基氮杂
芳烃加成到
靛红。各种
靛红和
氮杂
芳烃获得了中等至良好的产量。该方法为一步合成具有
生物学意义的
氮杂
芳烃取代的 3-羟基-2-羟
吲哚提供了快速方案。该反应的成功扩大了
路易斯酸在有机合成中 sp3 CH 键催化功能化中的合成效用。