Phosphorus-Containing Lewis Base Catalyzed Cascade Reactions of Isatin-Derived Oximes with Allenic Esters and Further Transformations
作者:Cheng-Kui Pei、Yu Jiang、Min Shi
DOI:10.1002/ejoc.201200511
日期:2012.8
Phosphorus containing Lewis base catalyzed cascade reactions of isatin-derived oximes with allenic esters afford the corresponding functionalized nitrones. Further Lewis acid catalyzed highly regioselective intramolecular [3+2] cyclizations give the corresponding bridged cycloadducts. Moreover, a combined “one-pot” reaction is also feasible for the above two catalytic reactions.
含磷的路易斯碱催化靛红衍生的肟与丙二烯酸酯的级联反应得到相应的官能化硝酮。进一步的路易斯酸催化高度区域选择性的分子内 [3+2] 环化得到相应的桥环加合物。此外,对于上述两种催化反应,组合“一锅”反应也是可行的。