The reaction of 2-substituted 7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-4-carboxylic acids with hydroxylamine results in the formation of 5-substituted 8,8-dimethyl-8,9-dihydro-3H,7H-[1,2]ox-azino[5,4,3-de]quinolin-3-ones. The structure of the 5-phenyl derivative has been established by X-ray structural analysis. A possible mechanism of the reaction has been proposed on the basis of nonempirical quantum-chemical calculations.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, 1651-1656, October, 2012.
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Rudenko, D.A., Slepukhin, P.A., Karmanov, V.I. et al. Synthesis of 5-substituted 8,8-dimethyl-8,9-dihydro-3H,7H-[1,2]oxazino[5,4,3-de]quinolin-3-ones. Chem Heterocycl Comp 48, 1539–1544 (2013). https://doi.org/10.1007/s10593-013-1170-z
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DOI: https://doi.org/10.1007/s10593-013-1170-z