N 89 Novel fluorinated chromones [Text] / V. I. Saloutin, Z. E. Skryabina, I. T. Bazyl, O. N. Chupakhin // Journal of Fluorine Chemistry. - 1993. - Vol. 65, N 1-2. - P37-41 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The self-condensation of ethyl pentafluorobenzoylacetate leads to the formation of 3-pentafluorophenyl-1H-sopyrono[2,3-b]-6,7,8,9-tetrafluorochrom in 37% yeld. On hydrolysis, this gave 2-pentafluorobenzoylmethyl-5,6,7,8-tetrafluorochromone |