Iron-Catalyzed Oxidative Coupling of Indoline-2-ones with Aminobenzamides via Dual C–H Functionalization
Yihuan Lai, Run‐Shi Wu, Jie Huang, Jun‐Yu Huang, Da‐Zhen Xu
Abstract
We describe an unprecedented dual C–H functionalization of indolin-2-one via an oxidative C(sp3)–H/N–H/X–H (X = N, C, S) cross-coupling protocol, which is catalyzed by a simple iron salt under mild and ligand-free conditions and employs air (molecular oxygen) as the terminal oxidant. This method is readily applicable for the construction of tetrasubstituted carbon centers from methylenes and provides a wide variety of spiro N-heterocyclic oxindoles.
Topics & Concepts
ChemistrySurface modificationCatalysisOxidative phosphorylationIndolineOxidative coupling of methaneCombinatorial chemistrySalt (chemistry)Molecular oxygenOxygenLigand (biochemistry)Organic chemistryReceptorPhysical chemistryBiochemistryCatalytic C–H Functionalization MethodsSynthesis and Catalytic ReactionsOxidative Organic Chemistry Reactions