The Fries rearrangement, named for the German chemist Karl Theophil Fries, is a rearrangement reaction of a phenyl ester to a hydroxy aryl ketone by catalysis of Lewis acids.
It involves migration of an acyl group of phenyl ester to benzene ring. The reaction is ortho and para selective and one of the two products can be favoured by changing reaction conditions, such as temperature and solvent.
Read more about Fries Rearrangement: Mechanism, Scope, Limits, Photo-Fries Rearrangement, Anionic Fries Rearrangment
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“Far star that tickles for me my sensitive plate
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