Partly hydrogenated 4-aroyl-substituted pyrazolo[3,4-b]quinolin-5-ones and 5-aroyl-substituted pyrazolo[1,5-a]quinazolin-6-ones were obtained by three-component cyclocondensation of substituted 3(5)-aminopyrazoles with the arylglyoxal hydrates and dimedone, 1,3-cyclohexanedione, or 4,4-dimethylcyclohexanedione in an alcohol medium. The chemical transformations of pyrazolo[3,4-b]quinolin5-ones in reactions with hydrazine hydrate and also upon alkylation, acylation, and oxidation were studied.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1026–1039, July, 2013.
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Petrova, O.N., Zamigailo, L.L., Shirobokova, M.G. et al. Cyclocondensation of 3(5)-Aminopyrazoles with Arylglyoxals and Cyclohexane-1,3-diones. Chem Heterocycl Comp 49, 955–967 (2013). https://doi.org/10.1007/s10593-013-1332-z
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DOI: https://doi.org/10.1007/s10593-013-1332-z