Various hypervalent iodine compounds were evaluated as reagents
for intramolecular phenolic oxidative coupling. It was found that
phenyliodine(III) bis(trifluoroacetate) was effective for the coupling
of the monophenolic substrate 13a to 14a under neutral conditions.
Vanadium oxytrifluoride and hypervalent iodine compounds were compared
as oxidants for the conversion of 32 to...