Ultrasonically Activated Oxidation of Hydroquinones to Quinones Catalysed by Ceric Ammonium Nitrate Doped on Metal Exchanged K-10 Clay

Abstract

We have accomplished the oxidation of hydroquinones to quinones in quantitative yields using catalytic quantity of ceric ammonium nitrate doped on various metal-exchanged K-10 clay, as a mild and efficient reagent, by ultrasonic activation. The exchanged cations examined were Fe³⁺, Cu²⁺, Ce⁴⁺ and K-10 clay itself. The best results were obtained using Fe³⁺-Mont. K-10 clay.

Key words

ultrasound - Fe³⁺-Mont. K-10 clay - ceric ammonium nitrate - hydroquinones - quinones

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