Palladium-Catalyzed Intermolecular Directed C−H Amidation of Aromatic Ketones
作者:Bin Xiao、Tian-Jun Gong、Jun Xu、Zhao-Jing Liu、Lei Liu
DOI:10.1021/ja108450m
日期:2011.2.9
Pd-catalyzed directed ortho C-H amidation of aromatic ketones with both sulfonamides and amides has been accomplished. The use of an electron-deficient Pd complex, Pd(OTf)(2), is crucial for the success of this transformation. Some key intermediates of the reaction, that is, the cyclopalladation complexes of ketones, have been characterized by X-ray crystallography. Experimental analysis of these palladacycles
An efficient Ru(II)-catalyzed intermolecularamidation of weakly coordinating ketones with sulfonyl azides via C-H bond activation is described. The reaction proceeds with high functional group tolerance, providing a novel approach to practical ketone-directed intermolecular C-N bond formation in the absence of an additional oxidant.