Elemental fluorine as an electrophile

N-F reagents acting as electrophiles, because radical clock experiments with these systems do not support a radical process [69, 70]. 

Consequently, in a given situation, the question as to whether a fluormation involves fluorine atoms (which themselves are very electrophilic, and such processes wiU therefore have polar characteristics) or nucleophilic attack on a molecule of elemental fluorine is difficult to assess. Both processes almost certainly occur, depending on the system and conditions. 

However, single-electron transfers promoted by photolysis, are the most Ukely processes when CF3OF is used as the fluorinating reagent [93], Examples of the use of hypofluorites for conversion of C—H to C—F bonds are given in Table 3.3. 

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