S 73 Sosnovskikh, V. Ya. Structural revision in the reactions of 3-cyanochromones with primary aromatic amines. Improved synthesis of 2-amino-3-(aryliminomethyl)chromones [Text] / V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Tetrahedron Letters. - 2009. - Vol. 50, № 47. - P6515-6518 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 3-Cyanochromones react with primary aromatic amines to give 2-amino-3-(aryliminomethyl)chromones as the sole products or as their mixtures with Z- and E-3-anilino-2-salicyloylacrylonitriles, depending on the reaction conditions. With aliphatic amines, 2-amino-3-(alkyliminomethyl)chromones are obtained in good yields. The reaction of 3-cyanochromone with o-phenylenediamine is reinvestigated and proof for the product structure and a possible reaction pathway are presented \\\\Expert2\\nbo\\Tetrahedron Letters\\2009, v. 50, p.6515.pdf |