In acid media, 1, 3-diketones and 1, 3-ketoesters can be fluorinated in high yield and often with high conversion mainly to the corresponding 2-fluoro-compounds. Diesters such as diethyl malonate do not react with fluorine under the same reaction conditions. The mechanism of these reactions has been investigated and while the identity of the electrophilic fluorinating species is uncertain, we believe that the essential features of the ...