Palladium‐Catalyzed Intermolecular [4+1] Spiroannulation by C(sp
<sup>3</sup>
)−H Activation and Naphthol Dearomatization
作者:Bojun Tan、Lu Bai、Pin Ding、Jingjing Liu、Yaoyu Wang、Xinjun Luan
DOI:10.1002/anie.201813202
日期:2019.1.28
was developed by using a C(sp3)−H activation/naphthol dearomatization approach. This bimolecular domino reaction of two aryl halides was realized through a sequence of cyclometallation‐facilitated C(sp3)−H activation, biaryl cross‐coupling, and naphthol dearomatization, thus rendering the rapid assembly of a new class of spirocyclic molecules in good yields with broad functional‐group tolerance. Preliminary
通过使用C(sp 3)-H活化/萘脱芳香化方法,开发了一种新型的钯催化的[4 + 1]螺环。两个芳基卤化物的双分子多米诺反应是通过一系列环金属化促进的C(sp 3)-H活化,联芳基交叉偶联和萘酚脱芳香化作用实现的,从而使新型螺环分子快速组装并获得了高收率具有广泛的功能组容忍度。初步的机理研究表明,CH裂解可能参与了速率确定步骤,并且五元的palladacycle被确定为分子间偶联的关键中间产物。