The previously unknown heterocyclic system naphtho[1,2-e]pyrazolo[5,1-b][1,3]oxazine was synthesized by the condensation of 1-dimethylaminomethyl-2-naphthols with bromopyrazoles. It is proposed that the highly reactive o-methylenequinone of the naphthalene series is formed as an intermediate.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, 913–916, June, 2011.
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Osyanin, V.A., Nakushnov, V.Y. & Klimochkin, Y.N. Synthesis of naphtho[1,2-e]-pyrazolo[5,1-b][1,3]oxazines. Chem Heterocycl Comp 47, 755–757 (2011). https://doi.org/10.1007/s10593-011-0830-0
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DOI: https://doi.org/10.1007/s10593-011-0830-0