Bifunctional Organocatalytic Strategy for Inverse-Electron-Demand Diels-Alder Reactions: Highly Efficient In Situ Substrate Generation and Activation to Construct Azaspirocyclic Skeletons
作者:Xianxing Jiang、Xiaomei Shi、Shoulei Wang、Tao Sun、Yiming Cao、Rui Wang
DOI:10.1002/anie.201107716
日期:2012.2.27
highly enantioselective organocatalytic version of the title reactionusing an in situ substrate generation/activation catalytic mode is described (see scheme). The reaction provides an efficient enantioselective construction of functionalized azaspirocyclic skeletons. The in situgeneration of the enolate provides a new way in which to use this important nucleophile in organic synthesis.