Abstract
Selective replacement of the hydrogen atom in the 5 position of the aromatic fragment of the substrate by the residue of a C-nucleophile, which is accompanied by rearrangement of the benzoquinoid structure to a naphthoquinoid structure, occurs in the reaction of benzo[a]phenoxazin-9-one with cyanoacetic acid derivatives under conditions of activation of the reagent.
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See [1] for Communication 8.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 538–541, April, 1988.
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Vysokov, V.I., Afanas'eva, G.B. & Chupakhin, O.N. Chemistry of heterocyclic quinoneimines. 9. Reaction of benzo[a]phenoxazin-9-one with C-nucleophiles. Chem Heterocycl Compd 24, 446–449 (1988). https://doi.org/10.1007/BF00478867
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DOI: https://doi.org/10.1007/BF00478867