- Novel fluorinated chromones
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The self-condensation of ethyl pentafluorobenzoylacetate leads to the formation of 3-pentafluorophenyl-1H-isopyrono-6,7,8,9-tetrafluorochromone in 37percent yield.On hydrolysis, this gave 2-pentafluorobenzoylmethyl-5,6,7,8-tetrafluorochromone.Other
- Saloutin, V. I.,Skryabina, Z. E.,Bazyl', I. T.,Chupakhin, O. N.
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- Synthesis of 2(3)-ethoxycarbonyl-5,6,7,8-tetrafluorochromones
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The hitherto unknown ethyl pentafluorobenzoylpiruvate was prepared by condensing pentafluoroacetophenone with diethyl oxalate.Intramolecular cyclization of this ester or of its copper(II) chelate, as well as of ethyl 2-(ethoxymethylene)pentafluorobenzoyla
- Saloutin, V. I.,Skryabina, Z. E.,Bazyl, I. T.,Chupakhin, O. N.
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p. 322 - 325
(2007/10/02)
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