Study of halogenation of 5(6)-hydroxybenzimidazole and its derivatives |
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Authors: | Yu. V. Kuznetsov L. G. Stolyarova V. P. Lezina L. D. Smirnov |
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Affiliation: | 1. N. N. Semenov Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow
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Abstract: | 1. | New halogen derivatives of 1-ethyl-2-methyl-, 2-methyl- and 5-hydroxybenzimidazole were obtained. | 2. | A method for the chlorination of aromatic compounds by an alcoholic solution of hydrogen chloride in the presence of hydrogen peroxide was proposed, which enables carrying out the reaction with a high yield. | 3. | The reactivity of the series of 5(6)-hydroxybenzimidazole derivatives during the electrophilic substitution (halogenation) was shown to be as follows: 1-ethyl-2-methyl-5-hydroxybenzimidazole >5(6)-hydroxybenzimidazole 2-methyl-5-hydroxybenzimidazole. | Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1630–1636, July, 1989. |
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