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Original Articles Open Access
The Fries rearrangement of aromatic esters is usually performed in Lewis acid (AlCl3), we have optimized this reaction with eco-friendly catalyst p-toluene sulphonic acid (PTSA) in situ. It was found to be as efficient new reagent for probing the mechanism of acylation reactions and Fries rearrangement of aromatic esters. PTSA is a strong, stable and biodegradable acid giving high conversion and selectivity (up to 90% of ortho-isomer and 10% of para-isomer at 100% conversion), Further, the conversion was confirmed by elemental and spectral Infra-red , Nuclear Magnetic Resonance, and Mass Spectroscopy (IR, 1H NMR Mass) analyses.
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Author(s): Prashant B Chouke Ratiram Gomaji Chaudhary and Vishwas N Ingle
Acylation, Fries arrangement, Eco-Friendly Catalyst, p-Hydroxyacetophenone, eco-friendly catalyst