The previously unknown heterocyclic system, indolo[2,1-b][1,3]benzoxazine, has been synthesized by condensation of iodomethylates of 2-[(dimethylamino)methylphenols] and 2-bromomelatonins. The highly reactive o-methylenequinone is proposed as an intermediate.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, 1050–1053, July, 2009.
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Osyanin, V.A., Klimochkin, Y.N. Synthesis of the new heterocyclic system, indolo[2,1-b]benzoxazine. Chem Heterocycl Comp 45, 833–836 (2009). https://doi.org/10.1007/s10593-009-0350-3
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DOI: https://doi.org/10.1007/s10593-009-0350-3