Pleiades Publishing
Russian Journal of General Chemistry
,  том 92 ,  издание 9 ,  страницы 1591-1603

Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis

Тип публикации: Journal Article
Дата публикации: 2022-09-01
Pleiades Publishing
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БС2
SJR: 0.194
CiteScore: 1.4
Impact factor: 0.8
ISSN: 10703632, 16083350
General Chemistry
Краткое описание
The processes of 4-nitroso-3-trifluoromethylpyrazoles reduction under various conditions were studied. It was found that their reduction with zinc in acetic acid results in the formation of 4-aminopyrazole in a mixture with 4-bisazo- and 4-bisazoxypyrazoles. The optimal method for the synthesis of 4-amino-3-trifluoromethylpyrazoles consists in the 5–6 h hydrogenation of 4-nitrosopyrazoles under pressure (p 10 atm) in the presence of a Pd/C catalyst at 50°С in ethanol. It was shown that 4-arylazopyrazoles can be used for the synthesis of 4-aminopyrazoles by catalytic hydrogenation reactions.
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Elkina N. A. et al. Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis // Russian Journal of General Chemistry. 2022. Vol. 92. No. 9. pp. 1591-1603.
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Elkina N. A., Perminova A. N., Agafonova N. A., Shchegol’kov E., Burgart Y. V., Pervova M. G., Samorukova M. A., Saloutin V. Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis // Russian Journal of General Chemistry. 2022. Vol. 92. No. 9. pp. 1591-1603.
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TY - JOUR
DO - 10.1134/s107036322209002x
UR - https://link.springer.com/10.1134/S107036322209002X
TI - Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis
T2 - Russian Journal of General Chemistry
AU - Elkina, N A
AU - Perminova, A N
AU - Agafonova, N A
AU - Shchegol’kov, E.V.
AU - Burgart, Yanina V.
AU - Pervova, M G
AU - Samorukova, M A
AU - Saloutin, Victor
PY - 2022
DA - 2022/09/01
PB - Pleiades Publishing
SP - 1591-1603
IS - 9
VL - 92
SN - 1070-3632
SN - 1608-3350
ER -
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@article{2022_Elkina,
author = {N A Elkina and A N Perminova and N A Agafonova and E.V. Shchegol’kov and Yanina V. Burgart and M G Pervova and M A Samorukova and Victor Saloutin},
title = {Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis},
journal = {Russian Journal of General Chemistry},
year = {2022},
volume = {92},
publisher = {Pleiades Publishing},
month = {sep},
url = {https://link.springer.com/10.1134/S107036322209002X},
number = {9},
pages = {1591--1603},
doi = {10.1134/s107036322209002x}
}
MLA
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Elkina, N. A., et al. “Reduction of Trifluoromethyl-containing 4-Nitroso- and 4-Arylazopyrazoles as a Method for 4-Amino-3-trifluoromethylpyrazoles Synthesis.” Russian Journal of General Chemistry, vol. 92, no. 9, Sep. 2022, pp. 1591-1603. https://link.springer.com/10.1134/S107036322209002X.