Abstract
A method for the synthesis of bi-, ter-, and quaterpyrazoles by cyclization ofC-(diformylmethyl)nitropyrazoles with hydrazine has been elaborated. Some of theirC- andN-derivatives have been obtained. The compounds prepared have been characterized by1H,13C,14N, and15N NMR spectra.
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For communication 6, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 1941–1945, November, 1993.
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Shevelev, S.A., Dalinger, I.L., Shkineva, T.K. et al. Nitropyrazoles. Russ Chem Bull 42, 1857–1861 (1993). https://doi.org/10.1007/BF00699003
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DOI: https://doi.org/10.1007/BF00699003