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Anomalous Direction of the Ene Reaction of Pulegone with 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione

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Abstract

The ene reaction of pulegone with 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione, apart from the two previously described products, epimeric 1-[(1S,4R)- and 1-[(1R,4R)-4-methyl-2-oxo-1-(prop-1-en-2-yl)cyclohexyl]-4-phenyl-1,2,4-triazolidine-3,5-diones, gave one more isomer, 1-{1-methyl-1-[(4R)-4-methyl-6-oxocyclohex-1-en-1-yl]ethyl}-4-phenyl-1,2,4-triazolidine-3,5-dione. The latter is formed as a result of addition of 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione to the Me2C= carbon atom of pulegone (anti-Markovnikov addition) and double bond migration to the six-membered carbocycle.

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Correspondence to A. A. Chiyanov.

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Original Russian Text © I.V. Bodrikov, Yu.A. Kurskii, A.A. Chiyanov, A.Yu. Subbotin, N.G. Kozlov, Yu.S. Korovnikova, 2018, published in Zhurnal Organicheskoi Khimii, 2018, Vol. 54, No. 9, pp. 1412–1413.

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Bodrikov, I.V., Kurskii, Y.A., Chiyanov, A.A. et al. Anomalous Direction of the Ene Reaction of Pulegone with 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione. Russ J Org Chem 54, 1430–1431 (2018). https://doi.org/10.1134/S1070428018090294

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  • DOI: https://doi.org/10.1134/S1070428018090294

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