γ -Ray Induced Reaction of Cyclohexanone in the Presence of Chlorinated Hydrocarbons

Abstract

Cyclohexanone was irradiated with γ-ray in the presence of some chlorinated hydrocarbons. Main products were confirmed to be 2-(1-cyclohexenyl)cyclohexanone [1] and 2, 6-di(1-cyclohexenyl)cyclohexanone [2]. Any expected condensation product between cyclohexanone and chlorinated hydrocarbons was not detected. The rates of formation of [1] and [2] were found to be nearly proportional to the dose rate. Maximum yield of 47.5% of [1] was obtained in the presence of 20% moles of tetra- chloroethylene. Effect of the coexistence of chlorinated hydrocarbons on the yields of [1] and [2] decreased in the order: tetrachloroethylene> trichloroethylene> cis-1, 2-dichloroethylene, carbontetrachloride> chlorgform> methylenechloride>1, 1-dichloroethane. mkhanism on the forniation of [1] and [2] was discussed.