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

[ Vol. 17 , Issue. 8 ]

Author(s):

Shermineh Sadat Ghalehbandi, Dadkhoda Ghazanfari*, Sayed Ali Ahmadi and Enayatollah Sheikhhosseini   Pages 654 - 660 ( 7 )

Abstract:


Introduction: We developed a simple, fast and new method for the Fries rearrangement of aryl esters.

Materials and Methods: 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.

Results and Discussion: Also, a notable selectivity was observed in the presence of 4-hydroxy pyridinium triflate functionalized silica.

Conclusion: Selectivity, shorter reaction time, high yield, and easy work-up are advantages of this synthetic method.

Keywords:

Fries rearrangement, aryl esters, SiO2 nanoparticles, silica gel, CF3SO3H, 4-Hydroxy pyridinium triflate@SiO2 nanoparticles.

Affiliation:

Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman

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