抄録
In the previous paper, the soysteryl acetate bromide was oxidized by chromic anhydride under suitable condition and stigmasterol was recovered. In this paper the reactivities of sitosteryl acetate dibromide to chromic anhydride and of stigmasteryl acetate tetrabromide were compared. Stigmasteryl acetate tetrabromide was oxidized but chromic anhydride consumption of the tetrabromide was less than that of sitosteryl acetate dibromide. Diatomous earth adsorbed chromic anhydride and concentration of chromic anhydride in the reaction mixture was there by lowered.
