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
Ruthenium-Catalyzed Intramolecular Hydroarylation of Arenes and Mechanistic Study: Synthesis of Dihydrobenzofurans, Indolines, and Chromans
作者:Raja K. Rit、Koushik Ghosh、Rajib Mandal、Akhila K. Sahoo
DOI:10.1021/acs.joc.6b01734
日期:2016.9.16
A ruthenium-catalyzed, amide-directed intramolecular hydroarylation of alkene-tethered benzamide derivatives is discussed. This method proficiently constructs dihydrobenzofuran, indoline, and chroman skeletons of biological significance in good to excellent yields; the overall process is atom-economical and step-efficient. The reaction exhibits broad scope, tolerating common functional groups, labile