Microwave-assisted Claisen rearrangement of allyloxybenzene with a hydroxyl group
was conducted in the presence of metal salts. The rearrangement was promoted in the presence of
an alkali metal salt, because the reaction substrate was converted into a phenoxide-type ion, which
can efficiently absorb microwaves. In contrast, a Lewis acid was strongly coordinated to the ethereal
oxygen, and this structure could also absorb microwaves efficiently.
Keywords: Microwave irradiation effect, Claisen rearrangement, metal salt, allylarenes, electron density, ethereal oxygen,
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