An Efficient and Stereoselective Conversion of Lactones to Substituted Cyclic Ethers
作者:Hidemi Yoda、Masato Mizutani、Kunihiko Takabe
DOI:10.3987/com-97-8060
日期:——
A general route to substituted cyclic ethers has been described by using nucleophilic addition of Grignard reagents to lactones in the presence of CeCl3 followed by the Lewis acid-induced deoxygenation of the corresponding hemiketals with Et3SiH. Stereoselective reduction of the 5-membered adducts to the disubstituted tetrahydrofurans has been also investigated.