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Alkenyl derivatives of 5-nitro-2-pyridone: Synthesis and halocyclization

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Abstract

Alkylation of 5-nitro-2-pyridone by alkenyl halides in acetone in the presence of K2СО3 proceeds with generation of a mixture of N- and О-derivatives with N-isomer prevailing. 1-Allyl- and 1-methylallyl-5-nitro-2-pyridone react with halogens with the formation of 2-halomethyl-6-nitro-2,3-dihydrooxazolo[3,2-a]-pyridinium halides. 1-Prenyl-5-nitro-2-pyridone reacts with bromine with the formation of 3-bromine-2,2-dimethyl-7-nitro-3,4-dihydro-2Н-pyrido[2,1-b][1,3]oxazinium bromide, and with iodine giving 2,2-dimethyl-7-nitro-3,4-dihydro-2Н-pyrido[2,1-b][1,3]oxazinium triiodide.

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Correspondence to E. V. Kalita.

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Original Russian Text © E.V. Kalita, D.G. Kim, O.S. Yeltsov, T.S. Shtukina, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 8, pp. 1157–1161.

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Kalita, E.V., Kim, D.G., Yeltsov, O.S. et al. Alkenyl derivatives of 5-nitro-2-pyridone: Synthesis and halocyclization. Russ J Org Chem 52, 1148–1153 (2016). https://doi.org/10.1134/S1070428016080091

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  • DOI: https://doi.org/10.1134/S1070428016080091

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