S. Hong
2005
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Journal
Journal of Nanjing University of Technology
Abstract
The title compound 1-phenyl-5-(4-fluorophenyl)-3-hydroxypyrazole (C 15H 14ON 2F) is a kind of medical intermediate and is proved to have the bioactivity as pesticide and germicide. It was prepared from oxidizing the 1, 5-diarylpyrzolidin-3-one in the presence of FeCl 3,using the oxygen in air. The reaction continued for almost 20h.By using the React IR analytical system, a series of IR spectrum were received. By analyzing the change of spectrum of the characteristic functional group, the mechanism of this oxidation reaction was understood, and it was found that the product could also existed as ketone in the solvent.