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Coumarin synthesis via Pechmann condensation utilizing starch sulfuric acid as a green and efficient catalyst under solvent-free conditions
RaminRezaei, Mohammad Hossein Farjam, Maryam Farasat
Starch sulfuric acid (SSA) was used as an efficient catalyst in the von Pechmann condensation of phenols with â-ketoesters leading to the formation of coumarin derivatives in excellent yields with good purity.Compared with conventional methods, the main advantages of the present procedure are milder conditions, shorter reaction time and green chemistry procedure.
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