合成方法:已开发出一种新的,选择性的Pd催化的2-炔基苯甲醛与吲哚的多米诺反应,用于合成5 H-苯并[ b ]咔唑-6-基酮。室温下,吲哚会俘获异苯并吡啶鎓配合物,从而生成3‐(1 H‐异色素n ‐1‐基)‐1 H‐吲哚,可通过提纯将其转变为5 H‐苯并[ b ]咔唑-6‐基酮温度(请参阅方案)。这些酮表现出强烈的荧光并与金属离子相互作用以增强荧光强度。
A facile and efficient method is developed for synthesis of 3-(1H-isochromen-1-yl)-1H-indole via silver triflate-catalyzed tandem reaction of 2-alkynylbenzaldehyde with indole. The reaction proceeds smoothly in DMF at room temperature with good substrate generality. The availability of the starting materials combined with mild reaction conditions and the high efficiency of this synthetic route would be attractive and beneficial for the focused library construction.