S 73 Sosnovskikh, V. Ya. Reactions of 3-cyanochromones with primary amines: structures of the products [Electronic resource] / V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 3. - P615-625 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 3-CYANOCHROMONES -- PRIMARY AMINES -- RECYCLIZATION Аннотация: Reactions of 3-cyanochromones with primary aromatic amines in boiling benzene gave mixtures of Z- and E-3-arylamino-2-(2-hydroxyaroyl)acrylonitriles and 2-amino-3-(aryl-iminomethyl)chromones. The latter can easily be obtained in the individual state when the reaction is carried out in the presence of triethylamine. In the case of primary aliphatic amines, the open-chain reaction product immediately undergoes cyclization into 3-alkyliminomethyl-2-aminochromones. The structures of the products were examined by 1D and 2D 1H, 13C, and 15N NMR spectroscopy in DMSO-d6 and CDCl3 \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 59 (3), 615-625.pdf |