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Synthesis of 4,5-Dialkyl-2-perfluoroaryl-1H-imidazol-1-ols and 4,5-Dimethyl-2-perfluoroaryl-1H-imidazoles

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Abstract

Aliphatic α-hydroxyamino oximes reacted with perfluoroaromatic aldehydes to give α-perfluoroaryl nitrones which underwent cyclization in acetic acid with the formation of 4,5-dialkyl-2-perfluoroaryl-1H-imidazol-1-ols. The latter were also obtained directly from aliphatic α-hydroxyamino oximes and perfluoro­aromatic aldehydes in acetic acid without isolation of intermediate nitrones. The reaction of 4,5-dimethyl-2-perfluoroaryl-1H-imidazol-1-ols with chloroacetone afforded 4,5-dimethyl-2-perfluoroaryl-1H-imidazoles.

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ACKNOWLEDGMENTS

Analytical and spectral data were obtained at the joint chemical research center, Siberian Branch, Russian Academy of Sciences.

Funding

This study was performed in the framework of state assignment for the Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences.

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Correspondence to A. Ya. Tikhonov.

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The authors declare the absence of conflict of interest.

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Translated from Zhurnal Organicheskoi Khimii, 2021, Vol. 57, No. 12, pp. 1752–1758 https://doi.org/10.31857/S0514749221120107.

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Os’kina, I.A., Vinogradov, A.S., Selivanov, B.A. et al. Synthesis of 4,5-Dialkyl-2-perfluoroaryl-1H-imidazol-1-ols and 4,5-Dimethyl-2-perfluoroaryl-1H-imidazoles. Russ J Org Chem 57, 1968–1973 (2021). https://doi.org/10.1134/S1070428021120101

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