
Bull. Russ. Acad. Sci. Div. Chem. Sci. (Engl. Transl.) p. 333 - 336 (1992)
Update date:2022-08-05
Topics:
Korolev, B. A.
Osmolovskaya, L. A.
Kuznetsov, Yu. V.
Stolyarova, L. G.
Smirnov, L. D.
Examination of the acid-base properties of 5-hydroxybenzimidazoles has shown them to exist in nitromethane as the 5-hydroxy-tautomers.Substituents in the 2-position have a predominantly inductive effect on the basicity of the 3-nitrogen, rationalized as in other nitrogen heterocycles by the proximity of the substituents to the reaction center. Keywords: 5-hydroxybenzimidazole, its tautomers and derivatives; acid-base properties and the effect thereon of substituents; Taft and inductive constants.
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