R 30 Reactions of 2-ethoxycarbonyl(carboxy)-5,6,7,8-tetrafluorochromones with N-nucleophiles [Electronic resource] / V. I. Saloutin, I. T. Bazyl, Z. E. Skryabina, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1994. - Vol. 43, № 5. - P849-853 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 2-ETHOXYCARBONYL(CARBOXY)-5,6,7,8-TETRAFLUOROCHROMONES -- N-NUCLEOPHILES -- ETHYLENEDIAMINE -- AMINES -- NUCLEOPHILIC REPLACEMENT Аннотация: The direction of reactions of 2-ethoxycarbonyl-5,6,7,8-tetrafluoro- and 2-carboxy-5,6,7,8-tetrafluorochromones with ammonia, methylamine, hexylamine, and aniline depends on the inductive effect of the substituent at position C-2 of the chromone and on the basicity of the amine. Nucleophilic aromatic substitution of a fluorine atom takes place in the interaction of 2-ethoxycarbonyl-5,6,7,8-tetrafluorochromone with secondary amines (morpholine, N-methylpiperazine) and ethylenediamine. \\\\Expert2\\nbo\\Russian Chemical Bulletin\\1994, 43 (5), 849.pdf |