In this thesis, I investigated the properties of deep eutectic solvents (DES) as reaction media for the fluorination reactions of organic molecules. Given the key role of hydrogen bonding in the structure and reactivity of DES, and the ability of the fluoride ion to form strong hydrogen bonds, I focused on its nucleophilic activity in such systems. First, I analyzed the literature on fluoride interactions with various combinations of hydrogen-bond donors and acceptors and identified suitable compositions for preparing stable, fluoride ions-containing DES. I then examined examples in which fluoride is used as an external reagent or as a functional additive in DES systems. Finally, I addressed nucleophilic fluorination reactions of organic compounds using simple fluoride salts in DES. The work draws on data from the Scopus and Web of Science databases and relies exclusively on original, peer-reviewed sources.
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