22697-40-1Relevant articles and documents
Synthesis of 2(3)-ethoxycarbonyl-5,6,7,8-tetrafluorochromones
Saloutin, V. I.,Skryabina, Z. E.,Bazyl, I. T.,Chupakhin, O. N.
, p. 322 - 325 (2007/10/02)
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