Copper-Catalyzed Asymmetric Addition to Isatins to give 3-Hydroxy-2-oxindoles by C-H Activation
作者:Tao Deng、Hongjun Wang、Chun Cai
DOI:10.1002/ejoc.201402852
日期:2014.11
A copper-catalyzedasymmetricaddition to isatins to give3-hydroxy-2-oxindoles by C–Hactivation with a fluorous bis(oxazoline) as ligand is presented. The corresponding products were obtained in 35–66 % yields with enantioselectivities up to 92 %. The fluorous ligand can be easily recovered and reused at least three times without significant loss in its activity.