Exposure　of　ethynyl　carbinols　to　oxone/(CF3CO)(2)O　in　the　presence　of　a　catalytic　amount　of　iodobenzene　afforded　,-dihydroxy　ketones　in　good　yield,　which　are　common　structural　motifs　in　natural　products　and　biologically　active　compounds.　Compared　with　traditional　methods,　this　method　is　more　convenient　and　avoids　using　stoichiometric　amounts　of　hypervalent　iodine　reagents.