Abstract
Starting from 5-aryl-2,3-dihydro-2,3-furandiones and benzoyl cyanamide, 2-benzoylamino-6-aryl-1,3-oxazin-4-ones were obtained. It was shown that on reaction of o-chlorophenyl cyanamide with furandiones, 2-imino-3-(o-chlorophenyl)-5-phenacyliden-4-oxazolidones are formed which in acid medium rearrange to 3-(o-chlorophenyl)-5-phenacylideneimidazolidin-2,4-diones and on thermolysis in acid medium they form 2-(o-chloroanilino)-6-aryl-1,3-oxazin-4-ones.
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For Communication 39, see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 166–169, February, 1985.
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Andreichikov, Y.S., Nekrasov, D.D. Chemistry of oxalyl derivatives of methyl ketones. 40. Reaction of 5-aryl-2,3-dihydro-2,3-furandiones with aryl and aroyl cyanamides. Chem Heterocycl Compd 21, 132–134 (1985). https://doi.org/10.1007/BF00504192
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DOI: https://doi.org/10.1007/BF00504192