The oxidation of enolic olefins was carried out in carbon tetrachloride-water (1: l) in which sodium metaperiodate (NaIO,) was used as a stoichiometric oxidant for the regeneration of RuO, from RuOz present only in a catalytic amount.'A number of cyclic enol ethers and enamines were subjected to the oxidation with RuO, and the results are summarized in Table I. In general, the cleaved products are obtained in excellent yields. The product ...