FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing pyrazole derivatives of formula I, in which RF denotes a perfluoroalkyl group, specifically CF3 (a), C2F5 (b), C3F7 (c), C4F9 (d). Method consists in that 4,4-dialkoxy-1-(perfluoroalkyl) pentane-1,3-dionate lithium, where alkoxy-substitute is methoxy- or ethoxy-group, is heated at 75–78 °C with equimolar amount of hydrazine dihydrochloride in ethanol for 4–6 hours.
EFFECT: technical result is a one-step method of producing 1-[5-(perfluoroalkyl)-1H-pyrazol-3-yl]ethanones, with high output.
1 cl, 2 tbl, 8 ex
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