Results 31 to 40 of about 22,231 (296)

Optical Absorption and Raman Spectroscopy Study of the Fluorinated Double-Wall Carbon Nanotubes [PDF]

, 2006
Double-wall carbon nanotube (DWNT) samples have been fluorinated at room temperature with varied concentration of a fluorinating agent BrF3. Content of the products estimated from X-ray photoelectron data was equal to CF0.20 and CF0.29 in the case of ...
Flahaut, Emmanuel, Bulusheva, Lyubov Gennadievna, Yudanov, Nikolay Fedorovich, Surovtsev, N. V., Pugachev, A. M., Yushina, I. V., Gevko, Pavel N., Grachev, K. A., Okotrub, Alexander Vladimirovich   +8 more
core   +1 more source

Protodefluorinated Selectfluor® Promotes Aggregative Activation of Selectfluor® for Efficient C(sp3)−H Fluorination Reactions [PDF]

, 2023
We report herein a simple, yet unexpected approach to dramatically improve the efficiencies of radical fluorination reactions of C(sp3)−H bonds. H−TEDA(BF4)2 is readily generated as a byproduct during fluorination reactions with Selectfluor®, the world’s
Shahboz, Yakubov, Ruth, M. Gschwind, Wagner, M. da Silva, Joshua, P. Barham, Willibald, Stockerl, Bastian, Dauth   +5 more
core   +2 more sources

Highly selective electrochemical fluorination of dithioacetal derivatives bearing electron-withdrawing substituents at the position α to the sulfur atom using poly(HF) salts

Beilstein Journal of Organic Chemistry, 2015
Anodic fluorination of dithioacetals bearing electron-withdrawing ester, acetyl, amide, and nitrile groups at their α-positions was comparatively studied using various supporting poly(HF) salts like Et3N·nHF (n = 3–5) and Et4NF·nHF (n = 3–5).
Bin Yin, Shinsuke Inagi, Toshio Fuchigami   +2 more
doaj   +1 more source

Fluorinated terpenoids and their fluorine-containing derivatives. [PDF]

RSC Adv
Synthetic methods for the fluorination of terpenoids have enabled the development of fluorinated terpenoids as important pharmaceuticals.
Huda MB, Nurlelasari, Supratman U, Budiman YP.   +3 more
europepmc   +4 more sources

Fluorination with Xenon Difluoride : Part X: Reactivity of Hexamethylbenzene

CHIMIA, 1976
Fluorination of hexamethylbenzene with xenon difluoride catalyzed by hydrogen fluoride resulted in pentamethylbenzyl fluoride, while fluorination in the presence of trifluoroacetic acid resulted in pentamethylbenzyl trifluoroacetate.
M. Zupan
doaj   +1 more source

Data-Driven Analysis of Fluorination of Ligands of Aminergic G Protein Coupled Receptors

Biomolecules, 2021
Currently, G protein-coupled receptors are the targets with the highest number of drugs in many therapeutic areas. Fluorination has become a common strategy in designing highly active biological compounds, as evidenced by the steadily increasing number ...
Wojciech Pietruś, Rafał Kurczab, Dagmar Stumpfe, Andrzej J. Bojarski, Jürgen Bajorath   +4 more
doaj   +1 more source

Reaction of [18F]Fluoride at Heteroatoms and Metals for Imaging of Peptides and Proteins by Positron Emission Tomography

Frontiers in Chemistry, 2021
The ability to radiolabel proteins with [18F]fluoride enables the use of positron emission tomography (PET) for the early detection, staging and diagnosis of disease.
Kymberley R. Scroggie, Michael V. Perkins, Justin M. Chalker   +2 more
doaj   +1 more source

Photosensitized direct C–H fluorination and trifluoromethylation in organic synthesis

Beilstein Journal of Organic Chemistry, 2020
The importance of fluorinated products in pharmaceutical and medicinal chemistry has necessitated the development of synthetic fluorination methods, of which direct C–H fluorination is among the most powerful.
Shahboz Yakubov, Joshua P. Barham
doaj   +1 more source

Mechanism-Dependent Selectivity: Fluorocyclization of Unsaturated Carboxylic Acids or Alcohols by Hypervalent Iodine

Frontiers in Chemistry, 2022
To understand the unprecedented difference between 6-endo and 5-exo selectivity in hypervalent iodine (III) promoted fluorocyclization of unsaturated carboxylic acids or alcohols by difluoroiodotoluene, density functional theory (DFT) studies have been ...
Jiaqi Su, Siwei Shu, Yinwu Li, Yong Chen, Jinxiang Dong, Yan Liu, Yan Liu, Yanxiong Fang, Yanxiong Fang, Zhuofeng Ke, Zhuofeng Ke   +10 more
doaj   +1 more source

Rhombohedral Iron Trifluoride with a Hierarchized Macroporous/Mesoporous Texture from Gaseous Fluorination of Iron Disilicide

E3S Web of Conferences, 2017
Stable low temperature rhombohedral iron trifluoride has been obtained by the fluorination under the pure fluorine gas of iron disilicide. The combination of both unusual fluorination process and precursor avoids to get unhydrated crystalline FeF3 ...
Delbègue Diane, Guérin Katia, Laik Barbara, Pereira-Ramos Jean-Pierre, Sougrati Moulay-Tahar, Cénac-Morthe Céline   +5 more
doaj   +1 more source