Abstract
Thermal decarbonylation of 3-p-toluoylpyrrolo[2,1-c][1,4]benzoxazine-1,2,4-trione affords (2-oxo-1,4-benzoxazin-3-yl)(p-toluoyl)ketene. The latter enters into the [4+2]-cycloaddition reaction withp-bromobenzylidene-p-anisidine to form 1-p-bromophenyl-2-p-methoxyphenyl-4-p-toluoyl-1,2-dihydropyrimidino[4,3-c][1,4]benzoxazine-3,5-dione. The molecular and crystal structure of the title compound was studied by X-ray diffraction analysis.
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For Part 1, see Ref. 6; for Part 2, see Ref. 5.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 614–617, March, 1999.
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Aliev, Z.G., Krasnykh, O.P., Maslivets, A.N. et al. Chemistry of acyl(imidoyl)ketenes. Russ Chem Bull 48, 608–611 (1999). https://doi.org/10.1007/BF02496191
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DOI: https://doi.org/10.1007/BF02496191