Synthesis of 2(3)-ethoxycarbonyl-5,6,7,8-tetrafluorochromones

Autor:	Z. E. Skryabina, O. N. Chupakhin, Viktor I. Saloutin, I. T. Bazyl
Rok vydání:	1993
Předmět:	Hydrolysis Chemistry Stereochemistry Decarboxylation Intramolecular cyclization chemistry.chemical_element Chelation General Chemistry Medicinal chemistry Copper Diethyl oxalate
Zdroj:	Russian Chemical Bulletin. 42:322-325
ISSN:	1573-9171 1066-5285
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f7d003bcd11fa9c64432935391c6478 https://doi.org/10.1007/bf00697086 Zobrazit plný text záznamu Full text from SpringerLink