Synthesis of 2 (3)-ethoxycarbonyl-5, 6, 7, 8-tetrafluorochromones
VI Saloutin, ZE Skryabina, IT Bazyl…
文献索引：Saloutin, V. I.; Skryabina, Z. E.; Bazyl, I. T.; Chupakhin, O. N. Russian Chemical Bulletin, 1993 , vol. 42, # 2 p. 322 - 325 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1993 , # 2 p. 362 - 364
Abstract 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) pentafluorobenzoylacetate affords 2-and 3-ethoxycarbonyl-5, 6, 7, 8-tetrafluorochromones. Hydrolysis of the latter followed by decarboxylation gives 5, 6, 7, 8-tetrafluorochromone.
[Saloutin, V. I.; Skryabina, Z. E.; Basyl', I. T.; Kondrat'ev, P. N.; Chupakhin, O. N. Journal of Fluorine Chemistry, 1994 , vol. 69, # 1 p. 119 - 126]
[Saloutin, V. I.; Skryabina, Z. E.; Basyl', I. T.; Kondrat'ev, P. N.; Chupakhin, O. N. Journal of Fluorine Chemistry, 1994 , vol. 69, # 1 p. 119 - 126]
[Saloutin, V. I.; Bazyl', I. T.; Skryabina, Z. E.; Kondrat'ev, P. N.; Chupakhin, O. N. Russian Chemical Bulletin, 1994 , vol. 43, # 2 p. 279 - 282 Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1994 , # 2 p. 299 - 302]
