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Schepin, V.V., Silaichev, P.S., Shchepin, R.V., Ezhikova, M.A., and Kodess, M.I., Zh. Org. Khim., 2005, vol. 41, p. 539.
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Original Russian Text © V.V. Shchepin, P.S. Silaichev, M.I. Kodess, 2006, published in Zhurnal Organicheskoi Khimii, 2006, Vol. 42, No. 5, pp. 793–794.
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Shchepin, V.V., Silaichev, P.S. & Kodess, M.I. Unexpected formation of 5′-aryl-1′-benzyl-4′-methyl-3,4,2′,3′-tetrahydro-2,2′-dioxospiro[chroman3,3′-pyrrol]-4-yl acetates at acylation of 1-aryl-2-benzyl-1-hydroxy-9c-methyl-1,2,9b,9c-tetrahydro-5-oxa-2-azacyclopenta[2,3]cyclopropa[1,2-a]naphthalene-3,4-diones with acetic anhydride. Russ J Org Chem 42, 778–779 (2006). https://doi.org/10.1134/S1070428006050265
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DOI: https://doi.org/10.1134/S1070428006050265