Results 221 to 230 of about 64,958 (266)
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Chemistry - A European Journal, 2001
Recent developments in fluorination of fullerenes coupled with HPLC separation have permitted the isolation and subsequent structural characterisation of many derivatives, a number of which have novel and unexpected structures. The good solubility of fluorofullerenes, high reactivity towards nucleophiles and enhanced dienophilicity of the unsubstituted
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Recent developments in fluorination of fullerenes coupled with HPLC separation have permitted the isolation and subsequent structural characterisation of many derivatives, a number of which have novel and unexpected structures. The good solubility of fluorofullerenes, high reactivity towards nucleophiles and enhanced dienophilicity of the unsubstituted
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Fluorinated nanocarbons using fluorinating agent: Strategies of fluorination and applications
The European Physical Journal B, 2009The fluorination method strongly influences the physical properties of the resulting fluorinated carbon materials. Two fluorination ways, direct fluorination under pure fluorine gas and controlled fluorination by the decomposition of TbF4, have been used for the fluorination of particular nanocarbons: carbon nanofibers and a mixture of carbon nanodiscs
Zhang, W. +8 more
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Synthesis of Fluorinated Dimethyl Carbonates by Direct Fluorination
Synthetic Communications, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Masahiro Takehara +4 more
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Corrosion by Fluorine and Fluorine Compounds
Corrosion, 1952The extreme reactivity of fluorine paradoxically brings to its compounds their most attractive properties—resistance to chemical attack. Because it tends to displace other elements and because no other element is sufficiently reactive to displace fluorine, fluorine compounds become chemically inert.
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1977
The preventive effect of fluorine against dental caries has been well-known for a long time. In recent years the addition of fluorine to the public water supply of communities has, therefore, become increasingly frequent. Since, however, the borderline between toxic and beneficial intake as regards the prevention of dental caries is very narrow, the ...
J, Kumpulainen, P, Koivistoinen
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The preventive effect of fluorine against dental caries has been well-known for a long time. In recent years the addition of fluorine to the public water supply of communities has, therefore, become increasingly frequent. Since, however, the borderline between toxic and beneficial intake as regards the prevention of dental caries is very narrow, the ...
J, Kumpulainen, P, Koivistoinen
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Fluorination of Flavones and Chromones Using Elemental Fluorine
The Journal of Organic Chemistry, 2014Flavonoids are abundant micronutrients in our diet, possessing various biological activities. Fluorine was successfully added across the double bond of various flavones and chromones. The difluoro derivative products were easily dehydrofluorinated to form the corresponding 3-fluoroflavones and 3-fluorochromones.
Inna, Vints, Shlomo, Rozen
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Elemental fluorine. Part 24.[1]: Fluorination of ethers by fluorine and Selectfluor
Journal of Fluorine Chemistry, 2010Abstract Reactions of dialkyl ethers with either fluorine or Selectfluor™ led to the formation of unusual difluorinated polyether products in modest yields. A mechanism involving initial fluorination of the site adjacent to ether oxygen followed by elimination of hydrogen fluoride, reaction of the generated enol system with a further equivalent of ...
Richard D. Chambers +4 more
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Current Topics in Medicinal Chemistry, 2013
The development of tropane-derivatives as cocaine-addiction therapeutics identified numerous compounds with affinities for the dopamine, serotonin, and norepinephrine transporters. Many of these compounds were then adapted for use as imaging radiotracers.
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The development of tropane-derivatives as cocaine-addiction therapeutics identified numerous compounds with affinities for the dopamine, serotonin, and norepinephrine transporters. Many of these compounds were then adapted for use as imaging radiotracers.
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On the calculation of fluorine-fluorine coupling constants in fluorinated propenes
Journal of Magnetic Resonance (1969), 1974J Hilton, L.H Sutcliffe
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Fluorinated and semi-fluorinated surfactants
1997Surfactants which contain one or more fluorinated or partially fluorinated hydrophobic groups (fluorinated surfactants or ‘fluorosurfactants’) can show dramatically different properties to those of hydrocarbon surfactants. The special properties of fluorosurfactants, which result from the unique properties of fluorocarbon chains, makes them ...
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