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New synthesis of ethyl 6-amino-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazole-3-carboxylates

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Abstract

Ethyl 6-amino-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazol-3-carboxylates were synthesized by a reaction of diethyloxalacetate sodium salt with aromatic aldehyde, hydrazine hydrate, and malononitrile in the presence of acetic acid.

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Authors and Affiliations

  1. Perm State Pharmaceutical Academy, Polevaya ul. 2, Perm, 614000, Russia

    V. L. Gein, T. M. Zamaraeva & I. V. Kozulina

Authors
  1. V. L. Gein
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  2. T. M. Zamaraeva
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  3. I. V. Kozulina
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Correspondence to V. L. Gein.

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Original Russian Text © V.L. Gein, T.M. Zamaraeva, I.V. Kozulina, 2014, published in Zhurnal Organicheskoi Khimii, 2014, Vol. 50, No. 5, pp. 703–705.

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Gein, V.L., Zamaraeva, T.M. & Kozulina, I.V. New synthesis of ethyl 6-amino-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazole-3-carboxylates. Russ J Org Chem 50, 691–693 (2014). https://doi.org/10.1134/S1070428014050121

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  • DOI: https://doi.org/10.1134/S1070428014050121

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