Palladium-Catalyzed Amidation of Unactivated C(sp<sup>3</sup>)H Bonds: from Anilines to Indolines
作者:Julia J. Neumann、Souvik Rakshit、Thomas Dröge、Frank Glorius
DOI:10.1002/anie.200903035
日期:2009.9.1
Unreactive CH to attractive CN: A palladium‐catalyzed intramolecular direct amidation of unactivated C(sp3)Hbonds combines CH activation and CN bond formation into one efficient process. Under the optimized conditions, an extraordinary tolerance of functional groups was observed, and numerous indoline derivatives were formed (see scheme).
The Iodine-mediated oxidative intramolecular amination of anilines via cleavage of unactivated (sp3)C–H and N–H bonds for the production of indolines is described. This transition-metal-freeapproach provides a straightforward strategy for producing (sp3)C–N bonds for use in the preferential functionalization of unactivated (sp3)C–H bonds over (sp2)C–H bonds. The reaction could be performed on a gram