Amide-Directed Intramolecular Co(III)-Catalyzed C–H Hydroarylation of Alkenes for the Synthesis of Dihydrobenzofurans with a Quaternary Center
作者:Asier Carral-Menoyo、Nuria Sotomayor、Esther Lete
DOI:10.1021/acs.joc.0c01413
日期:2020.8.7
example of Cp*Co(III)-catalyzed intramolecular hydroarylation of allyl aryl ethers using an amide directing group for the preparation of 3,3-disubstituted dihydrobenzofurans in high yields is described. The reaction of the unactivated alkene is completely selective for the formation of the quaternary center, allowing different substitution patterns on the aromatic ring and the alkene. The cyclization
描述了Cp * Co(III)催化的烯丙基芳基醚的分子内氢化芳基化的第一个实例,该酰胺基芳基用于高产率地制备3,3-二取代的二氢苯并呋喃。未活化的烯烃的反应对于形成季中心是完全选择性的,从而在芳环和烯烃上允许不同的取代方式。环化作用还可以扩展到六元环的形成和N-高allylinlindoles。