Showing papers in "Journal of Fluorine Chemistry in 2013"

TL;DR: A review of pyrazoles bearing novel fluorinated substituents can be found in this paper, where the authors give an overview on the synthesis process for pyrazole bearing new substituent.

TL;DR: In this article, a comprehensive treatment of literature data dealing with asymmetric synthesis of FAAs via homologation of chiral and achiral Ni(II) complexes of glycine and alanine Schiff bases using fluorinated electrophilic reagents is provided.

TL;DR: Carbotrifluoromethylation of acryloanilide derivatives with the combination of CuI and Togni's reagent affords oxindole derivatives bearing a 3-trifluoroethyl group in high yields under mild conditions that are compatible with various functional groups as discussed by the authors.

TL;DR: In this article, a series of indole and 5-methoxyindole derivatives, substituted at C3 with n -propyl or 4-methylcyclohexyl scaffolds bearing varying degrees of fluorination of the terminal methyl group, have been prepared and studied.

TL;DR: In this article, density functional theory calculations were used to provide new estimates of the energies and structures of singlet and triplet states of CH 2 :, CHF:, and CF 2 : carbenes, as well as those of their respective triphenylphosphonium ylides.

TL;DR: In this article, the performance of two commercial NF membranes NF5 and NF9 which have different rejection salt rates were evaluated and the experiments indicate that NF membranes repulse divalent anions very strongly and the smaller the ion, the better it is retained.

TL;DR: Trifluoroacetic acid (TFA) has been widely used in organic synthesis as a solvent, catalyst and reagent as discussed by the authors, including rearrangements, functional group deprotections, oxidations, reductions, condensations, hydroarylations and trifluoromethylations.

TL;DR: In this paper, two artificial colorimetric sensors, 4]-phenyldiazenyl]-2]-(E)-(phenylimino)methyl]phenol and 2-E)-[(4-nitrophenyl)imino]methyl, have been synthesized by a two-step procedure and characterized.

TL;DR: In this paper, the historical aspects and update topics on fluorine compounds such as graphite fluorides, fluorine-graphite intercalation compounds and organo-fluorine compounds as energy conversion materials are reported.

TL;DR: In this article, the electrochemical behavior of Umemoto reagent 5 and the sulfonium-based Shibata reagents 7, 8, 12 and 13 was investigated in anhydrous acetonitrile, N, N -dimethylformamide and methanol using cyclic voltammetry.

TL;DR: In this paper, the removal of fluoride ions from aqueous solution and drinking water with aluminum and lanthanum modified natural materials was studied and the results showed that the electrochemical method is useful to modify these materials with aluminum.

TL;DR: A new adsorbent manganese oxide coated graphene oxide (MOGO) was synthesized and characterized by TEM, XRD, FTIR, and BET analysis as discussed by the authors.

TL;DR: The photoinduced radical hydroperfluoroalkylation of unsaturated carboxylic acids using TTMSS as a H-donor was successfully developed in this article, and the reaction was also effective for N -phthalimide-dehydroamino acid and the product was easily converted to the corresponding amino acid and a peptide derivative.

TL;DR: Among the series, compounds 4f, 4g and 4h showed good activity on all cell lines except K562, whereas the other compounds in the series exhibited moderate activity, which could be a potential anticancer agent and therefore deserves further research.

TL;DR: The organic base methodology exploits an access to generate the "trifluoromethyl anion" for carbonyl, ester, acid halide, epoxide, deuterium donor, and carbon dioxide substrates to afford the trifluorbinder with good overall efficiency even in organocatalysis conditions as mentioned in this paper.

TL;DR: Several ω-CF 3 -substituted α-amino acids have been prepared in optically pure form via two complementary approaches as mentioned in this paper, where Racemic fluorinated derivatives of 2-aminobutanoic acid, norvaline and norleucine were chemically deracemized by complexation with a Ni(II) salt and a chiral reagent derived from α-(phenyl)ethylamine.

TL;DR: Asymmetric electrophilic fluorination of 3-substituted benzofuran-2(3 H )-ones was realized under liquid-liquid phase-transfer catalysis with 2-mol% of chiral phosphonium salts to afford the fluorinated products with up to 96% yield and 56% ee.

TL;DR: In this article, a highly efficient and practical approach to the hydrodefluorination of C F bond in fluoroarenes in the presence of 5 mol% NiCl 2 (PCy 3 ) 2 with lithium tri-t -butoxyaluminium hydride (LiAl(O- t -Bu) 3 H) under mild conditions has been developed.

TL;DR: In this article, a low catalyst loading, simple procedure, waste-free and direct synthetic entry to excellent yield of rhodanines, high reusability of the catalyst, and short reaction time.

TL;DR: In this paper, the effect of carbon-chain length in trifluorinated acetate's molecular structure has been investigated and it was concluded that triffluoroacetate with long carbon chain has a weak ability to dissociate LiPF6 salt into free ions, and simultaneously decreases mobility of solvated Li+ in the modified electrolyte.

TL;DR: In this article, a mild method for copper-mediated trifluoromethylation of 5-iodotriazole using (trifluorsyl)trimethylsilane (Me 3 SiCF 3 ) with the assistance of Ag 2 CO 3 was developed.

TL;DR: In this article, two polyfluorinated azo-linked halogen-bond donors were synthesized and their relative Lewis acidities were compared to a known dicationic azo linked halogen bond donor with almost identical geometrical arrangement of the iodine substituents.

TL;DR: In this article, the authors showed that using [Rh( μ -H)(dippp)] 2 (1) as a catalyst and HSiEt 3 as a hydrogen source can yield catalytic and catalytic hydrodefluorination reactions of fluorinated aromatic substrates.

TL;DR: A series of silicon-containing acrylic copolymers were synthesized via seeded emulsion polymerization as mentioned in this paper, and the effects of fluorine and silicon components on properties of the copolymer were studied.

TL;DR: A diamine containing pyridine and trifluoromethylphenyl groups was synthesized and used in the preparation of the fluorinated polyamides with inherent viscosities of 0.70-1.06−g −1.

TL;DR: In this paper, the thermal decomposition of BTP was studied over a temperature range of 25-800 °C and the decomposition products were analyzed by GC and GC-MS.

TL;DR: In this article, the development of various synthetic co-polymeric resins modified by ethylenediamine such as vinylbenzyl chloride/divinylbenzene-ethylenediamines (VBC/DVB-ED) for the removal of fluoride in water was described.

TL;DR: In this paper, the influence of dopant F on band energy and photoelectrochemical properties of nanostructured TiO2 electrodes was investigated, showing that F has little influence on the formation of anatase titania.

TL;DR: It has been observed that the presence of fluorine atom at the 4th position of the benzoyl group in the final compounds is essential for enhancing the antimicrobial activity.

TL;DR: In this paper, the authors presented a branched fluorinated amphiphiles containing carbohydrate-based hydrophilic groups and compared with traditional poly(ethylene glycol)-based ones.