环庚烯
化学
胺化
分子内力
戒指(化学)
偶联反应
组合化学
分子
催化作用
有机化学
立体化学
作者
Ding‐Wei Ji,Yan‐Cheng Hu,Xiang‐Ting Min,Heng Liu,Wei‐Song Zhang,Ying Li,Yongjin Zhou,Qing‐An Chen
标识
DOI:10.1002/anie.202213074
摘要
Abstract Skeletal reorganization reactions have emerged as an intriguing tool for converting readily available compounds into complicated molecules inaccessible by traditional methods. Herein, we report a unique skeleton‐reorganizing coupling reaction of cycloheptatriene and cycloalkenones with amines. In the presence of Rh/acid catalysis, cycloheptatriene can selectively couple with anilines to deliver fused 1,2‐dihydroquinoline products. Mechanistic studies indicate that the retro‐Mannich type ring‐opening and subsequent intramolecular Povarov reaction account for the ring reorganization. Our mechanistic studies also revealed that skeleton‐reorganizing amination between anilines and cycloalkenones can be achieved with acid. The synthetic utilization of this skeleton‐reorganizing coupling reaction was showcased with a gram‐scale reaction, synthetic derivatizations, and the late‐stage modification of commercial drugs.
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