U 52 Unexpected synthesis of 3,5-diethoxycarbonyl-2-pentafluorophenyl-4-phenyl-7,8,9,10-tetrafluoro-4,5-dihydrobenzo[b]oxacin-6-one [Electronic resource] / Ya. V. Burgart, M. V. Pryadeina, O. G. Kuzueva, M. I. Kodess, V. I. Saloutin, O. N. Chupakhin // Mendeleev Communications. - 2001. - Vol. 11, № 3. - P119-120 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The reaction of ethyl pentafluorobenzoylacetate with benzaldehyde in the presence of a base affords 3,5-diethoxycarbonyl-2-pentafluorophenyl-4-phenyl-7,8,9,10-tetrafluoro-4,5-dihydrobenzo[b]oxacin-6-one in contrast to fluoroalkyl-containing 3-oxo esters yielding 3,5-dialkoxycarbonyl-2,6-dihydroxy-2,6-difluoroalkyl-4-phenyltetrahydropyranes under the same conditions???? |