Results Since the reagents used for fluorination of P-diketones are either expensive or explosive, investigation of the use of dilute fluorine was undertaken. Recently, we have found that trimethylsilyl enol ethers can be selectively fluorinated to give a-fluoro ketones using dilute fl~ orine.~ Since trimethylsilyl enol ethers of p-diketones are readily formed'O as indicated in eq 1, their fluorination was iii ii PSIMes