Diastereoselective Cycloreductions and Cycloadditions Catalyzed by Co(dpm)<sub>2</sub>-Silane (dpm = 2,2,6,6-tetramethylheptane-3,5-dionate): Mechanism and Partitioning of Hydrometallative versus Anion Radical Pathways
作者:Long-Cheng Wang、Hye-Young Jang、Yeonsuk Roh、Vincent Lynch、Arthur J. Schultz、Xiaoping Wang、Michael J. Krische
DOI:10.1021/ja020223k
日期:2002.8.1
stereochemistry and electrochemical studies involving cathodicreduction of bis(enone) substrates. The collective experiments reveal competitive enone reduction pathways. Enone hydrometalation produces metallo-enolates en route to aldol and Michael cycloreduction products, that is, products derived from coupling at the alpha-position of the enone. Electron-transfer-mediated enone reduction produces metallo-oxy-pi-allyls