R. Vaickelionienė, V. Mickevičius, G. Mikulskiene
Jun 1, 2004
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Journal
Chemistry of Heterocyclic Compounds
Abstract
We have studied condensation of 1-(4-bromophenyl- and 2,5-dimethylphenyl)-3-ethoxycarbonyl-2-methyl-1,4,5,6-tetrahydro-4(1H)pyridones with hydrazine, phenylhydrazine, and hydroxylamine, as a result of which we obtained nucleophilic substitution and intramolecular cyclization products: 5-(4-bromophenyl- and 2,5-dimethylphenyl)-4-methyl-2,5,6,7-tetrahydro-3H-pyrazole[4,3-c]pyridin-3-ones, 5-(4-bromophenyl- and 2,5-dimethylphenyl)-4-methyl-6,7-dihydroisoxazole[4,3-c]pyridin-3(5H)-ones. We used computer modeling of the molecules of the studied compounds to obtain additional information on the structural features of the reaction products.