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Synthesis and Intramolecular Cyclization of N-Substituted 2-Amino-4-aryl-4-oxo-2-butenoic Acids

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Abstract

Treating 4-aryl-2,4-dioxobutanoic acids with aromatic amines, 4-aminoantipyrine, and benzophenone hydrazone furnished N-substituted 2-amino-4-aryl-4-oxo-2-butenoic acids that existed in solutions in enaminoketone and iminoketone forms. The acids obtained underwent in the presence of acetic anhydride cyclization into N-substituted 5-aryl-3-imino-3H-furan-2-ones.

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Authors and Affiliations

  1. Perm State University, Perm, 614600, Russia

    A. E. Rubtsov & V. V. Zalesov

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  1. A. E. Rubtsov
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  2. V. V. Zalesov
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Rubtsov, A.E., Zalesov, V.V. Synthesis and Intramolecular Cyclization of N-Substituted 2-Amino-4-aryl-4-oxo-2-butenoic Acids. Russian Journal of Organic Chemistry 39, 869–874 (2003). https://doi.org/10.1023/B:RUJO.0000003167.28537.71

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  • DOI: https://doi.org/10.1023/B:RUJO.0000003167.28537.71

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