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6-Amino-5-cyano-1H,4H-pyrazolo[3,4-b]pyrans

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The reaction of 3-methyl-1-phenyl-5-pyrazolene with arylideneamino nitriles in alcohol leads to the formation of 3-methyl-4(1-aryl-2,2-dicyanoethyl)-5-pyrazolones, which are readily cyclized in the presence of bases to the corresponding 6-amino-5-cyano-3-methyl-4-aryl- 1H,4H-pyrazolo[3,4-b]pyrans. The structures of the intermediate and final products were confirmed by the IR, UV, PMR, and mass spectra.

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Authors and Affiliations

  1. T. G. Shevchenko Voroshilovgrad State Pedagogical Institute, 348011, Voroshilovgrad

    L. G. Sharanina, V. K. Promonenkov, V. P. Marshtupa, A. V. Pashchenko, V. V. Puzanova, Yu. A. Sharanin, N. A. Klyuev, L. F. Gusev & A. P. Gnatusina

Authors
  1. L. G. Sharanina
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  2. V. K. Promonenkov
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  3. V. P. Marshtupa
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  4. A. V. Pashchenko
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  5. V. V. Puzanova
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  6. Yu. A. Sharanin
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  7. N. A. Klyuev
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  8. L. F. Gusev
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  9. A. P. Gnatusina
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Additional information

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 801–806, June, 1982.

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Sharanina, L.G., Promonenkov, V.K., Marshtupa, V.P. et al. 6-Amino-5-cyano-1H,4H-pyrazolo[3,4-b]pyrans. Chem Heterocycl Compd 18, 607–611 (1982). https://doi.org/10.1007/BF00506154

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  • DOI: https://doi.org/10.1007/BF00506154

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