cobalt(III)-catalyzed cross-coupling/cyclization of aryl C–H bonds of N-nitrosoanilines with α-diazo-β-ketoesters has been achieved. This protocol features a unique combination of Csp2-H activation/Wolff rearrangement process, allowing for the rapid assembly of quaternary 2-oxindoles. The empirical evidence and density functional theory (DFT) calculations reveal the trapping process of transient acceptor ketene
N-
亚硝基苯胺与α-重氮-β-
酮酸酯的
钴(III)催化的不寻常交叉偶联/环化反应已经实现。该协议具有Csp 2 -H激活/ Wolff重排过程的独特组合,可快速组装四级2-氧
吲哚。经验证据和密度泛函理论(DFT)计算揭示了
钴金属环对瞬态受体
乙烯酮中间体的捕获过程。