Abstract
Reactions of arylamines with 4-aryl-2-hydroxy-4-oxobut-2-enoic and 2-hydroxy-5,5-dimethyl-4-oxohex-2-enoic acids gave rise to 4-aryl-2-arylamino-4-oxobut-2-enoic and 2-aryl-amino-5,5-dimethyl-4-oxohex-2-enoic acids that existed in solutions as Z- and E-isomers or in a ring form as 3-arylamino-5-tert-butyl-5-hydroxyfuran-2(5H)-ones. The probable cyclization mechanism of these compounds into 5-R-3-arylimino-3H-furan-2-one derivatives was considered.
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Original Russian Text © N.M. Igidov, A.E. Rubtsov, A.V. Tyuneva, V.V. Zalesov, A.Yu. Borodin, E.V. Bukanova, 2009, published in Zhurnal Organicheskoi Khimii, 2009, Vol. 45, No. 5, pp. 716–721.
For communication III, see [1].
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Igidov, N.M., Rubtsov, A.E., Tyuneva, A.V. et al. Iminofurans chemistry: IV. Synthesis and structure of 2-N-aryl-substituted derivatives of 2-amino-4-aryl-4-oxobut-2-enoic and 2-amino-5,5-dimethyl-4-oxohex-2-enoic acids. Russ J Org Chem 45, 698–704 (2009). https://doi.org/10.1134/S1070428009050091
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DOI: https://doi.org/10.1134/S1070428009050091