Tandem Intramolecular Nicholas and Pauson−Khand Reactions for the Synthesis of Tricyclic Oxygen-Containing Heterocycles
作者:Miriam M. Quintal、Kristina D. Closser、Kevin M. Shea
DOI:10.1021/ol0479141
日期:2004.12.1
[reaction: see text] Simple acyclic enynes can be easily converted into tricyclic ethers upon treatment with Co2(CO)8 followed by Nicholas and Pauson-Khandreactions. Tricyclic [5,8,5]- and [5,7,5]-systems can be prepared in high overall yields in only seven synthetic steps.