Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Z. E. Skryabina"'
Autor:
O. V. Ryzhkov, A. S. Fokin, O. N. Chupakhin, G. A. Obanin, Z. E. Skryabina, Ya. V. Burgart, Viktor I. Saloutin
Publikováno v:
Russian Chemical Bulletin. 49:1231-1236
Methods for the synthesis of the earlier unknownN-substituted 2-(5,6,7,8-tetrafluoro-4-oxo-1,4-dihydroquinolin-3-yl)glycoxylic acids their esters from copper chelate of ethyl pentafluorobenzoylpyruvate were developed. The structure of intermediate et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00610c5aac7d939fa3a6dd5516366f26
https://doi.org/10.1007/bf02495765
https://doi.org/10.1007/bf02495765
Publikováno v:
Journal of Fluorine Chemistry. 94:83-90
Polyfluorobenzopyranopyrazoles(isoxazoles) have been prepared via cyclization of 5-tetrafluorophenyl-4-ethoxycarbonyl(carboxy)pyrazoles(isoxazoles) produced by the reaction of 3-ethoxycarbonyl-2-methyl- and 3-carboxy-substituted 5,6,7,8-tetrafluoroch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cace5880cef431e2055447673ed151b6
https://doi.org/10.1016/s0022-1139(98)00350-9
https://doi.org/10.1016/s0022-1139(98)00350-9
Publikováno v:
Journal of Fluorine Chemistry. 84:107-111
Reaction of fluoroalkyl-containing 1,3-keto esters and 1,3-diketones and their copper chelates with sodium nitrite gives the corresponding 2-hydroxyiminosubstituted ligands and chelates. 1,1,1-Trifluoro-3-hydroxyimino-4-pheny1-2,4-butanedione reacts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b71e1532bd8334b9b98c6e47c08572c
https://doi.org/10.1016/s0022-1139(97)00054-7
https://doi.org/10.1016/s0022-1139(97)00054-7
Publikováno v:
Journal of Fluorine Chemistry. 74:15-19
A stable crystalline hydrogen-bonded adduct of dimethyl sulphoxide (DMSO) and 7-hydroxy-5,6,8-trifluoro-2-carboxychromone has been prepared by the reaction of 2-carboxy-5,6,7,8-tetrafluorochromone with KOH/glycerol in DMSO. It has been found that pen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29e879f4e43f15ce81d73cfe9121fc1f
https://doi.org/10.1016/0022-1139(95)03249-d
https://doi.org/10.1016/0022-1139(95)03249-d
Publikováno v:
Journal of Fluorine Chemistry. 69:119-126
Nitrogen-substituted 4-oxoquinoline-2-carboxylic acids have been prepared by the reaction of pentafluorobenzoylpyruvic acid with isopropyl-, cyclohexyl-, phenyl- and ethanol-amine. Ammonia and triethylamine, however, were found to react with pentaflu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83fd03073ba6332d13f06d233abff760
https://doi.org/10.1016/0022-1139(94)03069-3
https://doi.org/10.1016/0022-1139(94)03069-3
Autor:
Yanina V. Burgart, Mercè Font-Bardia, Viktor I. Saloutin, Z. E. Skryabina, X. Solans, Oleg N. Chupakhin, M. Font-Altaba
Publikováno v:
Journal of Fluorine Chemistry. 69:25-29
5,7-Trifluoromethyl-6-fluoro-2,3-dihydro-1 H -1,4-diazepine has been prepared by the reaction of perfluoropent-2-ene (or 2-amino-4-iminoperfluoropent-2-ene) with ethylenediamine. Both perfluoropent-2-ene and 2-amino-4-iminoperfluoropent-2-ene were fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::160df899a0d62bc75e5a011f752e551a
https://doi.org/10.1016/0022-1139(93)03055-q
https://doi.org/10.1016/0022-1139(93)03055-q
Publikováno v:
Russian Chemical Bulletin. 43:849-853
The direction of reactions of 2-ethoxycarbonyl-5,6,7,8-tetrafluoro- and 2-carboxy-5,6,7,8-tetrafluorochromones with ammonia, methylamine, hexylamine, and aniline depends on the inductive effect of the substituent at position C-2 of the chromone and o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f22915d6056cb0e38a889a0b4b4a53f6
https://doi.org/10.1007/bf00717353
https://doi.org/10.1007/bf00717353
Publikováno v:
Russian Chemical Bulletin. 43:279-282
Reactions of pentafluorobenzoylpyruvic acid with amines afford the respective enamines. The intramolecular cyclization of the latter results inN-substituted 4-quinolone-2-carboxylic acids. Ammonia and triethylamine favor the cyclization of pentafluor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20d4cd2a4e673c9bd098ae3ed17ebaea
https://doi.org/10.1007/bf00695829
https://doi.org/10.1007/bf00695829
Autor:
Yanina V. Burgart, M. Font-Altaba, Oleg N. Chupakhin, Viktor I. Saloutin, Z. E. Skryabina, X. Solans, Mercè Font-Bardia
Publikováno v:
Russian Chemical Bulletin. 42:1697-1700
The transamination of 2-amino-4-imino-2-perfluoropentene with ethylenediamine gives the corresponding 6-fluoro-5,7-bis(trifluoromethyl)-2,3-dihydro-1H-1,4-diazepine. The transamination of 2-amino-4-imino-2-perfluoropentene by diethylenetriamine is ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::580f9de18bd46f466e9e75f861d37069
https://doi.org/10.1007/bf00697043
https://doi.org/10.1007/bf00697043
Publikováno v:
Russian Chemical Bulletin. 42:322-325
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)pentafluorobe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f7d003bcd11fa9c64432935391c6478
https://doi.org/10.1007/bf00697086
https://doi.org/10.1007/bf00697086