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On the mechanism of formation of 1,1-dimethylpyrazolin-3-oxides

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Conclusions

The primary product during the acylation of N,N-dimethylhydrazine with anhydrides ofα,β-unsaturated acids is the N,N-dimethylhydrazide of the acid, which at elevated temperatures rearranges to its tautomer — the corresponding 1,1-dimethylpyrazolin-3-oxide.

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Literature cited

  1. 1.

    T. A. Sokolova and L. A. Ovsyannikova, Dokl. Akad. Nauk SSSR,143, 140 (1962).

  2. 2.

    T. A. Sokolova, A. I. Kol'tsov, N. P. Zapevalova, and L. A. Ovsyannikova, Izv. Akad. Nauk SSSR, Ser. Khim., 1727 (1964).

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    N. P. Zapevalova and T. A. Sokolova, Izv. Akad. Nauk SSSR, Ser. Khim., 1442 (1965).

  4. 4.

    T. A. Sokolova, L. A. Ovsyannikova, and N. P. Zapevalova, Vysokomolek. Soed.,A10, 955 (1968).

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    T. A. Sokolova, I. N. Osipova, and L. A. Ovsyannikova, Zh. Organ. Khimii,3, 2252 (1967).

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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 917–918, April, 1970.`

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Ovsyannikova, L.A., Sokolova, T.A. On the mechanism of formation of 1,1-dimethylpyrazolin-3-oxides. Russ Chem Bull 19, 863–864 (1970). https://doi.org/10.1007/BF00867252

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Keywords

  • Elevated Temperature
  • Anhydride