作者:Uday Kumar Togiti、Adarash Kumar Shukla、Anupam Bhattacharya
DOI:10.1016/j.tetlet.2021.153008
日期:2021.4
The synthesis of 2,4-disubstituted pyrrolo[1,2-a]quinoxalines from chalcones is reported. The key steps used are polyphosphoric acid (PPA) assisted acyl rearrangement of the pyrrole ring and Fe catalyzed reduction-cyclization leading to 2,4-disubstituted pyrrolo[1,2-a]quinoxalines. Despite the utilization of comparatively unreactive aromatic ketones, modest to good yields were obtained.
据报道,从查耳酮合成 2,4-二取代吡咯并[1,2-a]喹啉。使用的关键步骤是多磷酸 (PPA) 辅助吡咯环的酰基重排和 Fe 催化的还原环化,导致 2,4-二取代吡咯并[1,2-a]喹啉。尽管使用了相对不反应性的芳香酮,但还是获得了中等到良好的产量。