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Report | Regular issue | Vol 19, No. 12, 1982, pp.2319-2325
Published online, 1st January, 1970
DOI: 10.3987/R-1982-12-2319
A New Synthesis of γ-Ylidene-α,β-butenolides from 2-Nitro-5-furancarbaldehyde and Pyrazoles

Maria de Bernadi, Giovanni Vidari, and Paola Vita Finzi

*Dipartamento di Chimica Organica, Università di Pavia, V. le Taramelli 10, 27100 Pavia, Italy

Abstract

A new and rapid synthesis of 5-pyrazolylmethylene-2(5H)furanones by the reaction of 2-nitro-5-furancarbaldehyde (I) with different substituted pyrazoles (IIa-f) in acetic acid-acetic anhydride is described.