S 53 Shcherbakov, K. V. Transformations of 5,6,7,8-tetrafluoro-2-ethoxycarbonylchromone under the action of primary amines [Electronic resource] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2009. - Vol. 45, № 5. - P766-772 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 5,6,7,8-TETRAFLUORO -- CHROMONES Аннотация: 5,6,7,8-Tetrafluoro-2-ethoxycarbonylchromone in aprotic polar solutions formed by nucleophilic aromatic ipso-substitution 7-alkyl(aryl)amino-5,6,8-trifluorochromones. This transformation in ethanol depended on the reactivity of the acting amine: with stronger nucleophiles, aliphatic amines, an opening of the ?-pyrone ring occurred, with aromatic amines 7-monosubstituted chromones were the main products, and the open-chain esters formed in lesser amount \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2009, 45 (5), 766.pdf |