Zobrazeno 1 - 10
of 82
pro vyhledávání: '"James Burdon"'
Autor:
Catherine Dalton, Alicia Reynolds, Michael H. B. Hayes, Rosaleen Mylotte, Rung Rung Chang, Antonio F. Patti, Vincent Verheyen, James Burdon
Publikováno v:
Journal of Soils and Sediments. 15:211-224
The purpose of this research was to isolate humic substances and humin from an estuarine sediment core using a novel sequential extraction procedure to characterise the isolates, to determine their compositions and to understand how the organic matte
Publikováno v:
Journal of Fluorine Chemistry. 102:43-50
A simple stereoselective three step synthesis of 2-fluoro- and 2-chloro-2,3-dideoxy arabinose derivatives from the readily available starting materials, (R)-glycidol and either 1,1,1,2-tetrafluoroethane (134a) or 1-chloro-2,2,2-trifluroethane (133a),
Publikováno v:
Journal of Fluorine Chemistry. 99:127-131
Trifluorovinyllithium (CF2 = CFLi) has been successfully synthesised from 1,1,1,2-tetrafluoroethane using n-butyllithium at −78°C in ether. Other bases (LDA, DBU, MeLi, t-BuLi, t-BuOK) were tried with varied success. The stability of the system wa
Publikováno v:
Journal of Fluorine Chemistry. 78:1-5
Temperature-dependent high-resolution 19 F NMR spectroscopic investigations of perfluoro(cyclohexyl methyl ether) ( 1 ), perfluoro(cyclohexyl ethyl ether) ( 2 ) and perfluoro[4-(2-cyclohexyloxyethyl)morpholine] ( 3 ) revealed in each case dynamic phe
Publikováno v:
ChemInform. 22
Publikováno v:
ChemInform. 27
Trifluorovinyllithium has been synthesised in high yield from 1,1,1,2-tetrafluoroethane (HFC 134a) by treatment with butyllithium at –78 °C, and then treated with a variety of electrophiles in one-pot reactions.
Publikováno v:
ChemInform. 29
Trifluorovinyllithium (from 1,1,1,2-tetrafluoroethane [HFC-134a]) reacted with 2-trifluoromethylaniline at −78 °C to give 1,2,3-trifluoroquinolin in moderate to good yield. In a similar reaction, 1 -chlorodifluorovinyllithium (from 1-chloro-2,2,2-
Publikováno v:
ChemInform. 31
A simple stereoselective three step synthesis of 2-fluoro- and 2-chloro-2,3-dideoxy arabinose derivatives from the readily available starting materials, (R)-glycidol and either 1,1,1,2-tetrafluoroethane (134a) or 1-chloro-2,2,2-trifluroethane (133a),
Publikováno v:
Journal of Fluorine Chemistry. 52:165-184
The four 3H, 4H-2-difluoromethylpentafluoro-oxolans reacted with powderedpotassium hydroxide in suspension in benzene to give 3H- (1) and 4H- (2)2-difluoromethyltetrafluoro-3,4-oxolen, different proportions being formedfrom each stereoisomer. 3H/4H-
Publikováno v:
Journal of Fluorine Chemistry. 51:179-196
2-Methyltetrahydrofuran with potassium tetrafluorocobaltate(III) at 200 °C gave largely 3H, 4H-2-difluoromethyltrifluoro-3-oxolen. Further fluorination of this by cobalt trifluoride at 120–150 °C afforded many of the stereoisomers expected from s