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the iodobenzene moiety to form PhI
+
Cl. This
species then captures a fluoride ion to give the
hypervalent [(chloro)(fluoro)iodo] benzene
moiety. The hypervalent iodine moiety thus
generated oxidizes the substrate and
consequently the starting PSIB is recovered.
The recovered PSIB mediator is reused in
subsequent runs, maintaining a good yield
(about 90%) of the fluorinated product.
Figure 6.24
Electrochemical fluorination
using a polymer-supported mediator
6.8.6.3 Electropolymerization
Mattes's group and Fuchigami's group
independently achieved the electrooxidative
polymerization of pyrrole, thiophene and
aniline in different ionic liquids [67-69].
Mattes's group used
1-butyl-3-methylimidazolium tetrafluoroborate
and hexafluorophosphate ([bmim]BF
4
and
[bmim]PF
6
) for electropolymerization of
pyrrole and aniline. They found that the
π-conjugated polymers thus obtained are highly
stable and can be electrochemically cycled in
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