Copper(I)-Catalyzed Hydroalkoxylation/Hydrogen-Bonding-Induced Asymmetric Hetero-Diels-Alder Cycloaddition Cascade: An Approach to Aromatic Spiroketals
作者:Xin Li、Jijun Xue、Chusheng Huang、Ying Li
DOI:10.1002/asia.201101056
日期:2012.5
One thing leads to another: Bis(benzannelated) 5,6‐spiroketal skeletons can be constructed by an efficient cascade process involving an unprecedented CuI‐catalyzed intramolecular alkyne hydroalkoxylation and an asymmetric hetero‐Diels–Alder cycloaddition. The method yields a series of diversely functionalized spiroketals from two readily available open‐chained starting materials in good yields and