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

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

Journal Name: Current Organic Synthesis

Volume 17 , Issue 8 , 2020

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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.

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Article Details

VOLUME: 17
ISSUE: 8
Year: 2020
Published on: 17 November, 2020
Page: [654 - 660]
Pages: 7
DOI: 10.2174/1570179417666200713175943
Price: $65

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