Stereoselectivity in the addition of chlorofluorocarbene to 10-methyl-Δ8-2-octalone 2-ethylene acetal
Abstract
Chlorofluorocarbene adds to the title olefin (I) with very marked β-endo-F stereoselectivity to give a mixture of the cyclopropane (II)(80–90%) and an unidentified product (10–20%).