Olefination of Ketones Using a Gold(III)-Catalyzed Meyer−Schuster Rearrangement
作者:Douglas A. Engel、Gregory B. Dudley
DOI:10.1021/ol0616743
日期:2006.8.1
efficient olefination strategy for ketones is described. Ethoxyacetylide addition followed by a gold-catalyzed Meyer-Schuster rearrangement affords alpha,beta-unsaturated esters, generally in excellent overall yield from the starting ketones. The alkynophilicity of Au3+ promotes an interaction with the electron-rich acetylenes that catalyzes the Meyer-Schuster rearrangement selectively over other conceivable