A methodology for the selective base-catalyzed isomerization of certain epoxides having a@- proton into ketones is presented.@, y-Epoxy nitro compounds were the substrates for this transformation and underwent a multistep reaction consisting of epoxide ring opening, isomerization of the double bond, elimination of HN02, and addition of PhSH to provide y- keto sulfides in good yields by reacting with PhSNa or a combination of PhSH and EhN. ...