Elsewhere, the importance of organofluorine compounds to all areas of chemistry has exploded over the past decades, including organic synthesis, pharmaceutical science, and materials development. In this context, procedures for the direct conversion of unactivated C-H bonds to C-F bonds under mild conditions are highly prized. Among these, radical C(sp )-H fluorinations using Selectfluor ® (F-TEDA(BF 4 ) 2, 'SF ® ') are particularly attractive for their applicability in late-stage functionalization (LSF) of complex molecules, mild conditions, and (when photosensitized) the use of light as a sustainable source of energy. Activation of SF ® can be achieved by a photocatalyst, photosensitized auxiliary and thermal fluorination methods (Scheme 1, B). Unfortunately, notably drawbacks of these methods are i) the variable yields -that good or excellent yields may result for some products but many products are achieved in unsatisfactory yields (<50%) and ii) the relatively long reaction times (typically >12 h for photochemical reactions).