Preparation of Furylacrylic Acid and 5-Nitrofurylacrylic Acid

Abstract

Requisite conditions for the preparation of furylacrylic acid and 5-nitrofurylacrylic acid have been examined. The results indicated that furylacrylic acid can be obtained in 71.2-75.80% yield by reacting a mixture of 1 mole furfural, 1.2 moles acetic anhydride, and 1.4 moles anhydrous potassium acetate at 145-150° for 1.5-2.5 hours, and that 5-nitrofurylacrylic acid can be obtained in 54.4-55.3% yield by the addition of 1 mole of furylacrylic acid to a mixture of 4 moles of 80% nitric acid and 6.3 moles acetic anhydride maintained at -2° to -5°.