Abstract
The reactivity of pyrazolo[2, 3-a]pyridine in electrophilic substitution reactions has been studied. It has been shown that electrophilic attack is directed to position 3 (equivalent to position 4 of the pyrazole nucleus). The position of entry of the substituents was shown by chemical methods and was confirmed by a study of PMR spectra.
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Grandberg, I.I., Nikitina, S.B., Moskalenko, V.A. et al. A study of pyrazoles. Chem Heterocycl Compd 3, 837–842 (1967). https://doi.org/10.1007/BF00474885
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DOI: https://doi.org/10.1007/BF00474885