Abstract
The palladium-catalyzed reaction of 4-iodo-2-quinolones with diarylacetylenes in the presence of Ag2CO3 as a base in N,N-dimethylformamide (DMF) at 100 °C afforded unprecedented polyfused 2-quinolones via sequential [2+2+1] spirocyclization/arene C–H activation. A plausible mechanism is suggested based on control experiments and density functional theory (DFT) calculations.
摘要
以 Ag2CO3 为碱在 N,N-二甲基甲酰胺(DMF)中于 100 ℃催化 4-碘-2-喹啉酮与二芳基乙炔的反应,通过顺序[2+2+1]螺环化/芳烃 C-H 活化,得到了前所未有的多融合 2-喹啉酮。根据对照实验和密度泛函理论(DFT)计算,提出了一种合理的机理。