A CuBr2-catalyzed annulation of 2-bromo-N-arylbenzimidamide with selenium/sulfur powder for the synthesis of benzo[d]isoselenazole and benzo[d]isothiazole in generally good yields was investigated. This synthetic strategy features good substrate scope and functional group tolerance. Furthermore, the corresponding products could be converted into N-aryl indoles via rhodiumIII-catalyzed ortho C–H activation
研究了CuBr 2催化的 2-
溴-N-芳基苯甲酰胺与
硒/
硫粉的环化反应,用于合成苯并 [ d ] 异
硒唑和苯并 [ d ]
异噻唑,收率一般较高。这种合成策略具有良好的底物范围和官能团耐受性。此外,相应的产物可以通过
铑III催化的N-苯环的邻位C-H活化转化为N-芳基
吲哚,为轴向芳香分子提供了一种有效的途径。