J. Iran. Chem. Soc., Vol. 7, No. 4 December 2010, pp.895~899.

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Melamine Trisulfonic Acid as a New, Efficient and Reusable Catalyst for the Solvent Free Synthesis of Coumarins

F. Shirinia,*, M.A. Zolfigolb and J. Albadia

aDepartment of Chemistry, College of Science, the University of Guilan, Rasht 41335, I. R. Iran

bCollege of Chemistry, Bu-Ali Sina University, Hamadan, I. R. Iran

Melamine trisulfonic acid (MTSA) is easily prepared by the reaction between melamine and neat chlorosulfonic acid at room temperature. This compound can be used as an efficient and recyclable catalyst for the synthesis of coumarins via von Pechmann condensation reaction under solvent-free conditions.

Keywords: Melamine trisulfonic acid, Coumarins, Pechmann reaction, Phenols, Solvent-free reaction conditions

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