Gold-Catalyzed Oxidative Cycloadditions to Activate a Quinoline Framework
作者:Deepak B. Huple、Satish Ghorpade、Rai-Shung Liu
DOI:10.1002/chem.201302533
日期:2013.9.23
gold! Gold‐catalyzed reactions of 3,5‐ and 3,6‐dienynes with 8‐alkylquinoline oxides results in an oxidative cycloaddition with high stereospecificity (see scheme; EWG = electron‐withdrawing group); this process involves a catalytic activation of a quinoline framework. The reaction mechanism involves the intermediacy of α‐carbonyl pyridinium ylides (I) in a concerted [3+2]‐cycloaddition with a tethered