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
追求黄金!3,5-和3,6-二烯与8-烷基喹啉氧化物的金催化反应导致具有高立体特异性的氧化环加成反应(见方案; EWG =吸电子基团);该过程涉及喹啉骨架的催化活化。该反应机理涉及α-羰基吡啶鎓烷基化物(I)与链状烯烃的协同[3 + 2] -环加成反应的中间过程。