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A nitro coumarin derivatives have been synthesized via nitration of 7-hydroxy-4-methyl coumarin which was synthesized via Pechmann condensation resorcinol with a β-ketoester using Amberlyst-15 as a green and efficient catalyst and by caring out the reaction of resorcinol and ethyl acetoacetate (with 1:1 mol ratio) in the presence of 0.2 g of Amberlyst-15 at 110 o C under solventfree conditions. These nitro coumarin derivatives have biological activity and momentousness in the industrial fields. The purified products were determined the melting points and characterized by spectral methods: FT-IR, 1 H-NMR, 13 C-NMR.

Synthesis and Nitration of 7-Hydroxy-4-Methyl Coumarin via Pechmann Condensation Using Eco-Friendly Medias