Abstract
It has been shown that pyrazoles (hydroxypyrazoles) are formed upon reaction of fluorine-containing copper Β-diketonates (Β-ketoesterates) with hydrazines and their hydrochlorides. A preparative method has been developed for the synthesis of fluorinated pyrazoles and hydroxypyrazoles via treatment of fluorine-containing Β-diketonate and Β-ketoesterate copper compounds with hydrazines. The molecular structure of 1-phenyl-3-octafluorobutyl-5-hydroxypyrazole has been established based on x-ray structural analysis.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 640–645, March, 1990.
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Kondrat'ev, P.N., Skryabina, Z.é., Saloutin, V.I. et al. Reactions of copper(II) polyfluorinated Β-diketonates and Β-ketoesterates with hydrazines. Russ Chem Bull 39, 561–565 (1990). https://doi.org/10.1007/BF00959584
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DOI: https://doi.org/10.1007/BF00959584