The action of equimolar amounts of nitrous acid formed in situ on benzylcyclopropanes with electron-donor and electron-withdrawing substituents in the aromatic part of the substrate lead, at certain temperatures, exclusively to the insertion of an N=O fragment into the three-membered carbocycle with subsequent formation of a heterocyclic isoxazoline (4,5-dihydroisoxazole) system.
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Notes
Calculated relative to the consumed starting compound.
Calculated relative to the consumed starting compound.
Calculated relative to the consumed starting compound.
Calculated relative to the consumed starting compound.
Calculated relative to the consumed starting compound.
Calculated relative to the consumed starting compound.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1309-1317, August, 2012.
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Gazzaeva, R.A., Trofimova, E.V., Kadzhaeva, A.Z. et al. Benzyl-4,5-dihydroisoxazoles from benzylcyclo-propanes: regioselective insertion of an n=o fragment into the three-membered carbocycle of benzylcyclopropanes by the action of nitrous acid. Chem Heterocycl Comp 48, 1220–1227 (2012). https://doi.org/10.1007/s10593-012-1125-9
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DOI: https://doi.org/10.1007/s10593-012-1125-9