Effect of the nature of a fluorinated substituent on the synthesis of functionalized 1,3-diketones

The synthesis of alkali metal and copper(ii) 1-polyfluoroalkyl-4,4-dimethoxypentane-1,3-dionates is reported. The subsequent treatment of these compounds with oxalic acid or ethylenediaminetetraacetic acid disodium salt affords functionalized 1,3-diketones. The nature of the polyfluoroalkyl substituent was found to affect the conditions of the Claisen condensation and the stability of the acetal group in acidic medium.