Showing papers in "Journal of Fluorine Chemistry in 2003"

TL;DR: In this paper, three kinds of ionic liquids, 1-alkyl-3methylimidazolium tetrafluoroborate (n=2−4), were prepared and fundamental properties of these liquids and those mixed with industrially used organic solvents (PC, GBL and AN) were compared to solid salts, TEMABF4.

TL;DR: In this paper, single-walled carbon nanotubes (SWCNTs) were fluorinated at several different temperatures and the change of atomic and electronic structures of fluorinated SWCNT was investigated using X-ray photoelectron spectroscopy (XPS), electrical resistivity measurements and transmission electron microscopy (TEM).

TL;DR: In this article, nine symmetrical and asymmetric 2,5-disubstituted 1,3,4-oxadiazoles have been synthesized by a facile and mild method with high yield.

TL;DR: In this paper, the properties of the title compounds as nucleophilic SCF3 transfer reagents were checked with a variety of organic, organometallic and inorganic compounds.

TL;DR: In this paper, the synthesis and properties of Parylene-AF4 and its paracyclophane precursor are discussed, including a discussion of the importance of the fluorinated bridges, the advantages of the dimeric precursor, and the potential of a potential interlayer dielectric for on-chip high-speed semiconductor device interconnection.

TL;DR: In this paper, a variety of fluoroalkyl end-capped oligomers were prepared under mild conditions by the use of Fluoroalkanoyl peroxide as a key intermediate.

TL;DR: The high temperature reaction of C60 with trifluoromethyl[60]fullerenes C60(CF3)n (n=2, 4, 6, 8, 10) has led to the isolation of the five trifluroborimitrioulflerene C60-CF3 n (n = 2, 4.6, 6.8, 8.10) as discussed by the authors.

TL;DR: The Montreal Protocol is only one example of action to reduce undesirable impact from fluorocarbons as mentioned in this paper, and other, less universal, actions include abatement of fluoroform greenhouse gas emissions from HCFC manufacturing, process changes to eliminate trifluoromethylsulfur pentafluoride emissions from electrochemical fluorination and ceasing manufacture of perfluorooctanyl sulfonate compounds due to their persistence in human tissue.

TL;DR: In this article, the synthesis of a series of fluorinated benzaldehydes and their use in the Wittig synthesis of fluoro-substituted stilbenes is described.

TL;DR: In this paper, the authors demonstrate the predictive power of using the CF bond as a tool in influencing the conformation of amides and peptides, and demonstrate that it is possible to predict solid state conformation for amides.

TL;DR: In this paper, the surface structure of MgF 2 and its use as a support of catalytically active phases is discussed. But the surface properties of these catalysts are not discussed.

TL;DR: Raman spectra were measured of highly fluorinated graphite samples prepared at room temperature, 380 and 515°C, and showed that graphite fluorides, (CF)n and (C2F)n are formed via fluorine-intercalated phase with planar graphene layers.

TL;DR: In this paper, eight substituted N -aryl-N '-benzoylthioureas have been synthesized by a facile and mild method with high yield at room temperature.

TL;DR: In this paper, a direct fluorination of 1,3-dioxolan-2-one with elemental fluorine was successfully carried out to provide 4-fluoro-1,3dioxanol-2,1, which was expected as an additive for lithium ion secondary battery.

TL;DR: In this paper, the authors show that the polymers that have lower 157 nm optical absorbance also tend to show the longest lifetimes, and that even with these design principles, it is advantageous to avoid small rings, as arise in cyclobutanes.

TL;DR: In this paper, Li and tetraethylammonium perfluoroalkylmagnesium reagents (RfMgBr) and B(OCH3)3 were obtained from the reactions of perfluoralkymethylmagnesium Reagents.

TL;DR: In this paper, the roles of the element fluorine and its compounds in green chemistry and clean chemical manufacturing are considered, and the role of the fluorine element and compounds in the green chemistry field is discussed.

TL;DR: In this paper, the crystal structures of the known (NH4)3AlF6(I) and (NH 4)3FeF6 (III) elpasolites were refined by localizing anions (F−, O2−) in four acceptable positions of the cubic system Fm3m (Z=4) with a=8.9401(3), 9.1104(3), 9.114(1) and 8.110(1)-A, respectively.

TL;DR: In this article, the colorless solid decomposes at 215-217°C and can be used as a versatile tool to prepare a variety of SeCF3 derivatives of different compositions.

TL;DR: In this article, the utility of reusable ionic liquid-proline (or aldolase antibody 38C2) reaction system was described, and obtained α-chloro-β-hydroxy compounds were transformed to the optically active α,β-epoxy carbonyl compounds.

TL;DR: In this paper, the use of RTILs for a variety of halogen exchange (Halex) fluorination processes using alkali metal fluorides is assessed, and it is shown that the utility of RTils as reusable, inert media for such reactions is limited by the gradual decomposition of the RTIL in the presence of highly basic fluoride ion.

TL;DR: In this paper, a novel catalytic approach to (2,2-difluorovinyl)benzenes has been developed, in which the hydrazones of aromatic aldehydes generated in situ could be converted to the corresponding (2.2-DDF-BNs) by catalytic olefination reaction (COR) with dibromodifluorsomethane in the presence of CuCl.

TL;DR: The presence of an unique atom-to-face alcoholic oxygen atom⋯π interaction between a pentafluorophenyl group and alcoholic oxygen has been demonstrated by X-ray analysis of the novel chiral amino alcohol instead of the well-known interaction between usual aromatic ring and alcoholic hydrogen atom.

TL;DR: In this article, a transfer fluorination on cinchona alkaloids with the aid of achiral N-F fluorine-transfer reagents is described, and ten commercially available reagents are evaluated.

TL;DR: In this paper, a solution, semibatch, free-radical polymerization process was developed allowing synthesis of the terpolymers on a multikilogram scale, and further property enhancements may arise from replacing the norbornene with functionalized tricyclonononenes.

TL;DR: In this article, the synthesis and physico-chemical characterization of 1,1,2,2-tetrakis(perfluoroalkyl-methylene)ethane {[F(CF2)nCH2]2CH}2 (n=6, TK6; n=8,TK8) are reported.

TL;DR: In this article, the synthesis of a series of 6-aryl(5-methyl)-4-trifluoromethyl-2(1H)-pyrimidinones from the reaction of 4-aryl-4-methoxy-1, 1,1,1-, trifluoro-3-buten-2-ones with urea in the presence of hydrochloric acid was reported.

TL;DR: Continuous flow gas-liquid thin film microreactors have been used for the oxidation of alcohols and Baeyer-Villiger oxidation of ketones using elemental fluorine as discussed by the authors.

TL;DR: The synthesis of versatile fluorine compounds for conducting polymer research on fluorinated materials is presented in this paper, where a 1:1 mixture of 4 and 1,2,4,5,5-tetrafluoro-3,6-bis(5, 5-dimethyl-1, 3-dioxan-2-yl)-6-formylbenzene (3b) was used to give partially fluorinated polyphenylenevinylene (9).

TL;DR: A novelperfluoroalkyl-containing quaternary ammonium salt 5 was designed and synthesized and the antimicrobial activities of compound 5 were measure with Escherichia coli 8099 and Staphylococcus aureus ATCC 6538 as a Gram-positive and Gram-negative strain.