The bromination kinetics for a series of 5-substituted 2-amino- and 2-dimethylamino-pyridines and for some para-substituted anilines are described. The heterocyclic compounds react as their free bases. Results are correlated by the Hammett equation, and the quantitative effect of the aza group in slowing down the rate is discussed.
P. J. Brignell, P. E. Jones and A. R. Katritzky, J. Chem. Soc. B, 1970, 117 DOI: 10.1039/J29700000117
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