Chemistry of Heterocyclic Compounds p. 1213 - 1216 (1981)
Update date:2022-08-11
Topics:
Filimonov, V. D.
Sukhoroslova, M. M.
Novikov, V. T.
Vidyagina, T. V.
The pKa values of 1-indolylacetic, 3-(9-ethyl)carbyzolylacetic, and a number of 3,6-disubstituted 9-carbazolylacetic acids in aqueous ethanol solutions were determined by potentiometry.The inductive constants of the corresponding heterocyclic fragments were calculated from the values obtained.It is shown that annelation of the benzene ring with the pyrrole ring of indole gives rise to a decrease in the negative inductive effect of the heteroring.A linear relationship between the acidic properties of carbazole and the corresponding 9-carbazolylacetic acids was established.
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