4] (PPA) was found to be an efficient new reagent for probing the mechanism of acylation reactions and Fries rearrangement of acyloxy benzene derivatives and also the direct acylation reactions of phenol derivatives with Carboxylic acids.
In this work we probed the mechanism of Fries rearrangement of acyloxy benzene derivatives based on the mechanism which suggested by H.
Alcohols, carbonyls, and carboxylic acids enhance the formation of secondary ozonides, as well as alkoxy and acyloxy
hydroperoxides, from stabilized Criegee intermediates formed in [O.
R can also consist of hydrogen, alkoxy, acyloxy
or alkylamino or other functional groups.