Hg(OTf)2-Catalyzed Vinylogous Semi-Pinacol Rearrangement Leading to 1,4-Dihydroquinolines
摘要:
An efficient method for the construction of dihydroquinoline derivatives possessing a quaternary carbon center is developed by an application of Hg(OTf)(2)-catalyzed vinylogous semi-pinacol-type rearrangement. The reaction was found to be specifically catalyzed by mercury salt and to proceed via a bicyclic aminal.
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.