Gold-Catalyzed Cyclization/Oxidative [3+2] Cycloadditions of 1,5-Enynes with Nitrosobenzenes without Additional Oxidants
作者:Chun-Hao Chen、Yen-Ching Tsai、Rai-Shung Liu
DOI:10.1002/anie.201209850
日期:2013.4.22
Golden control: The title reaction (see scheme) proceeds with high stereocontrol to generate the heterocyclic products in good yield. Experiments to probe the mechanism were performed.
Gold-Catalyzed Oxidative Cyclizations of 2-Oxiranyl-1-alkynylbenzenes for Diastereoselective Synthesis of Highly Substituted 2-Hydroxyindanones
作者:Rupsha Chaudhuri、Rai-Shung Liu
DOI:10.1002/adsc.201100325
日期:2011.10
We report the gold-catalyzedoxidativecyclizations of 2-oxiranyl-1-alkynylbenzenes into highlysubstituted 2-hydroxyindanone frameworks bearing a tertiary alcohol. Such gold-catalyzed reactions comprise an initial internal redox reaction, sulfoxide oxidation of α-carbonyl gold-carbenoids, followed by gold-catalyzed formal ene reactions on the resulting diketone intermediates.