4-Hydroxy Pyridinium Triflate@SiO2 Nanoparticles as a Novel Efficient Catalyst for Fries Rearrangement of Aryl Esters with High Selectivity

(E-pub Ahead of Print)

Author(s): Shermineh Sadat Ghalehbandi, Dadkhoda Ghazanfari*, Sayed Ali Ahmadi, Enayatollah Sheikhhosseini

Journal Name: Current Organic Synthesis

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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.

Keywords: Fries rearrangement, Aryl esters, SiO2 nanoparticles, Silica gel, CF3SO3H, 4-Hydroxy pyridinium triflate@SiO2 nanoparticles.

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(E-pub Ahead of Print)
DOI: 10.2174/1570179417666200713175943
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