Sonochemistry of epoxyalkylhalides in the presence of a zinc–copper couple
Abstract
Under sonication in aqueous ethanol, a zinc–copper couple induces the conjugated addition of epoxyalkyl groups to electron deficient alkenes in synthetically useful yields, provided that the two reducible functionalities are sufficiently far apart; 3,4-epoxyalkylhalides have been found to form cyclopropane adducts.