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NMR study of antipyrine adducts with lanthanide shift reagents. Molecular structure of 2,3-dimethyl -1-phenyl- 5-ethoxypyrazole

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Abstract

The complex formation of antipyrine with LSR in CCl4 is studied. Recommendations for producing the limiting lanthanide induced shifts characteristic of the 1∶1 complex are given and the geometry of the complex formed is determined. Results of an x-ray structure study of the adduct which is formed upon reaction of antipyrine and the ethyl ester of benzenesulfonic acid are presented.

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Authors and Affiliations

  1. Scientific-Research Institute of Technology and Safety of Medicinal Substances, Moscow Oblast., 142450, Staraya Kupavna

    E. I. Oblapenko, A. V. Polyakov, A. I. Ermakov, A. I. Yanovskii, A. V. Krylov, V. G. Voronin & Yu. T. Struchkov

Authors
  1. E. I. Oblapenko
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  2. A. V. Polyakov
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  3. A. I. Ermakov
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  4. A. I. Yanovskii
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  5. A. V. Krylov
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  6. V. G. Voronin
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  7. Yu. T. Struchkov
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Additional information

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 191–196, February, 1989.

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Oblapenko, E.I., Polyakov, A.V., Ermakov, A.I. et al. NMR study of antipyrine adducts with lanthanide shift reagents. Molecular structure of 2,3-dimethyl -1-phenyl- 5-ethoxypyrazole. Chem Heterocycl Compd 25, 152–157 (1989). https://doi.org/10.1007/BF00479908

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  • DOI: https://doi.org/10.1007/BF00479908

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