An efficient and practical protocol has been developed to synthesize 5,6-dihydroindolo[1,2-a]quinoxaline derivatives by CuI-catalyzed intramolecular N-arylation under microwave irradiation. This method rapidly afforded the tetracyclic products with good to excellent yields (83–97%) in short reaction times (45–60 min).
已开发出一种高效实用的协议,通过CuI催化的微波辐射下的分子内N-芳基化合成5,6-二氢吲哚[1,2-a]喹喔啉衍生物。该方法在短时间内(45-60分钟)迅速获得了四环产物,产率良好至优良(83-97%)。