Cyclopropanation of Protected Chiral, Acyclic Allylic Alcohols: Expedient Access to the <i>a</i><i>nti</i>-Cyclopropylcarbinol Derivatives
作者:André B. Charette、Marie-Christine Lacasse
DOI:10.1021/ol0264051
日期:2002.10.1
The diastereoselective cyclopropanation of silyl-protected chiral allylicalcoholsusing Shi's carbenoid (TFA-Et(2)Zn-CH(2)I(2)) gave access to the anti-cyclopropylcarbinyl silyl ethers with excellent diastereocontrol. The level of stereocontrol was shown to depend on the sizes of the protective group and the allylic substituent. [reaction: see text]