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Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles

Yurii Alexeevich Azev 1
Yurii Alexeevich Azev
, 
Irina Vasil'evna Teplyashina 1
Irina Vasil'evna Teplyashina
, 
Sergei Victorovich Shorshnev 1
Sergei Victorovich Shorshnev
1 Ural Scientific Research Institute of Technology of Medical Preparations, Ekaterinburg, Russian Federation
10.1070/MC1998v008n05ABEH001010
Published 1998-09-10
Communication , Volume 8, Issue 5, 199-201
2
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Azev Y. A., Teplyashina I. V., Shorshnev S. V. Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles // Mendeleev Communications. 1998. Vol. 8. No. 5. pp. 199-201.
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Azev Y. A., Teplyashina I. V., Shorshnev S. V. Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles // Mendeleev Communications. 1998. Vol. 8. No. 5. pp. 199-201.
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TY - JOUR
DO - 10.1070/MC1998v008n05ABEH001010
UR - https://mendcomm.colab.ws/publications/10.1070/MC1998v008n05ABEH001010
TI - Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles
T2 - Mendeleev Communications
AU - Azev, Yurii Alexeevich
AU - Teplyashina, Irina Vasil'evna
AU - Shorshnev, Sergei Victorovich
PY - 1998
DA - 1998/09/10
PB - Mendeleev Communications
SP - 199-201
IS - 5
VL - 8
ER -
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@article{1998_Azev,
author = {Yurii Alexeevich Azev and Irina Vasil'evna Teplyashina and Sergei Victorovich Shorshnev},
title = {Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles},
journal = {Mendeleev Communications},
year = {1998},
volume = {8},
publisher = {Mendeleev Communications},
month = {Sep},
url = {https://mendcomm.colab.ws/publications/10.1070/MC1998v008n05ABEH001010},
number = {5},
pages = {199--201},
doi = {10.1070/MC1998v008n05ABEH001010}
}
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Azev, Yurii Alexeevich, et al. “Unusual reactions of enhydrazinopyrazolones and dipyrazolylmethanes with 5-oxopyrazoles.” Mendeleev Communications, vol. 8, no. 5, Sep. 1998, pp. 199-201. https://mendcomm.colab.ws/publications/10.1070/MC1998v008n05ABEH001010.

Abstract

The reaction of 6-phenyl-1,2,4-triazine-4-oxide 1 with pyrazolones 2a–d gives enhydrazino-derivatives 3a–d. On heating with pyrazolones 2, products 3 are transformed into the corresponding symmetrical 4 or unsymmetrical derivatives 5 of dipyrazolylmethane. Heating of dipyrazolylmethane derivatives 4 with pyrazolones 2 results in the substitution of some pyrazolone residues for others.

References

1.
Azev Y.A., Neunhoeffer H., Shorshnev S.V.
Mendeleev Communications, 1996
2.
Azev Y.A., Neunhoeffer H., Foro S., Lindner H.J., Shorshnev S.V.
Mendeleev Communications, 1995