Abstract
Treatment of methyl 4,6-diaryl-5-oxa-6-azaspiro[2.4]heptane-1-carboxylates with zinc in acetic acid leads to cleavage of the N–O bond in the isoxazolidine ring with formation of 1,3-amino alcohols whose subsequent cyclization under the reaction conditions yields bi- or tricyclic lactams or lactones with retention of the three-membered ring.
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Original Russian Text © A.P. Molchanov, T.Q. Tran, A.V. Stepakov, R.R. Kostikov, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 3, pp. 424–428.
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Molchanov, A.P., Tran, T.Q., Stepakov, A.V. et al. Reductive cleavage and subsequent transformations of 5-oxa-6-azaspiro[2.4]heptane-1-carboxylates. Russ J Org Chem 52, 404–408 (2016). https://doi.org/10.1134/S1070428016030180
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DOI: https://doi.org/10.1134/S1070428016030180