Abstract
A method is proposed for the synthesis of 2-(β-dimethylaminovinyl)-4-oxo-1,3-benzoxazinium salts and dimethyl (4-oxo-3H-1,3-benzoxazine-2-methylene) sulfonium salts by condensation of 2-alkylbenzoxazinonium salts with dimethylformamide and dimethyl sulfoxide.
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G. N. Dorofeenko, V. V. Mezheritskii, Yu. I. Ryabukhin, O. V. Ivanova, and L. G. Minyaeva, Khim. Geterotsikl. Soedin., No. 3, 322 (1977).
Yu. I. Ryabukhin, V. V. Mezheritskii, and G. N. Dorofeenko, Khim. Geterotsikl. Soedin., No. 4, 460 (1975).
T. Irie, E. Kurosawa, and T. Hanada, Nippon Kagaku Zasshi, 79, 1401 (1958); Chem. Abstr., 54, 5657 (1960).
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Translated from Khimiya Geterotsiklichesikikh Soedinenii, No. 3, pp. 328–331, March, 1977.
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Mezheritskii, V.V., Minyaeva, L.G., Ryabukhin, Y.I. et al. Condensation of 2-alkyl-4-oxo-1,3-benzoxazinium salts with carbonyl compounds and their heteroanalogs. Chem Heterocycl Compd 13, 260–264 (1977). https://doi.org/10.1007/BF00470306
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DOI: https://doi.org/10.1007/BF00470306