Abstract
The existence of an ortho effect in 1-phenyl-5-substituted pyrazoles is proved by analyzing the UV and fluorescent spectra of a number of 1-phenylpyrazoles. The effect leads to destruction of the coplanarity of the phenyl and pyrazole rings.
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For Part III see [19].
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Grandberg, I.I., Tabak, S.V. & Kost, A.N. Researches on pyrazoles. Chem Heterocycl Compd 1, 613–615 (1966). https://doi.org/10.1007/BF00472703
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DOI: https://doi.org/10.1007/BF00472703