Abstract
We developed a simple, fast and new method for the Fries rearrangement of aryl esters. 4-Hydroxy pyridinium triflate functionalized silica is a very efficient, reusable and economically available catalyst for the Fries rearrangement in solvent-free condition and under microwave irradiation. Also, a notable selectivity was observed in the presence of 4-hydroxy pyridinium triflate functionalized silica. Selectivity, shorter reaction time, high yield, and easy work-up are advantages of this synthetic method.
Published Version
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