Regioselective access to substituted oxindoles via rhodium-catalyzed carbene C–H insertion
作者:Delphine Gauthier、Robert H. Dodd、Philippe Dauban
DOI:10.1016/j.tet.2009.08.006
日期:2009.10
insertion of the resulting carbenes into an aromatic C–H bond gives access to substituted oxindoles. The reaction takes place with aromatic rings substituted by either electron-donating or -withdrawing groups at ortho, meta or para positions and the regioselectivity can be controlled by a substitution α to the diazo functionality. In the presence of an ester, the reaction leads to the formation of 2-silylo