Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Aliphatic Fluorine Compounds

FLUORINE COMPOUNDS, ORGANIC - FLUORINATED ALIPHATIC COMPOUNDS] (Vol 11)... [Pg.735]

FLUORINECOMPOUNDS,ORGANIC - FLUORINATED ALIPHATIC COMPOUNDS] (Vol 11) -for hydrofluoric acid burns [FLUORINE COMPOUNDS, INORGANIC - ALDTONIUT (Volll)... [Pg.1083]

A. M. Lovelace, D. A. Rausch, and W. Aliphatic Fluorine Compounds, Reiohold Publishing Corp., New York, 1954. [Pg.272]

F. L. M. Pattison, Toxic Aliphatic Fluorine Compounds, Elsevier Publishing Co., New York, 1959, p. 16. [Pg.308]

Preparation. Thermal elimination of HCl from l-chloro-l,l-difluoroethane (HCFC-142b) [75-68-3] is the principal industrial route to VDF covered by numerous patents (8—19). Dehydrohalogenation of l-bromo-l,l-difluoroethane (20), or 1,1,1-trifluoroethane (HFC-143a) (21—25), or dehalogenation of l,2-dichloro-l,l-difluoroethane (26—28) are investigated alternative routes (see Fluorine compounds, organic-fluorinated aliphatic compounds). [Pg.385]

CFG = chlorofluorocarbon HCFC = hydrochlorofluorocarbon see Fluorine compounds,organic-aliphatic. [Pg.414]

See Airpollution Atmospheric models Fluorine compounds, organic-fluorinated aliphatic compounds Ozone. [Pg.390]

Preparation and Application of Aliphatic Fluorine Compounds 1 Halides, Olefins Alcohols, and Cyclobutaiies Oer) Liebig H Ulm, K Chem Ztg 99, 477M85 ISO... [Pg.12]

Production and Uses of Aliphatic Compounds II Ether, Epoxide and Pnlyeiher, Carboxylic Acids and Their Denvatives, Sulfonic Acids, Toxicological Data of Aliphatic Fluorine Compounds (Ger) Liebig, H, Ulm, K Chem Ztg 100 3-14 270... [Pg.13]

The molecular ion is usually not observed in the mass spectra of aliphatic fluorinated compounds (>ethane). Common losses are F. HF, or CF3. Frequently observed ions lie at m/zs 31 (CF), 50 (CF2). and 69 (CF3). If mass 69 is intense, a CF3 group is present. The presence of a small m/z 51 peak indicates the presence of carbon, hydrogen, and fluorine. If a m/z 51 peak is intense, then CHF is present. The absence of m/z 51 and/or m/z 47 (without chlorine) suggests a perfluorinated compound. [Pg.72]

Aliphatics fluorination certainly is one of the best candidate reactions for micro reactors. Fluorinated compounds are of high industrial interest. For instance, they find wide application as pharmaceuticals, dyes, liquid crystals and crop-protection agents [3,13,16, 38] about every third drug contains a fluorine moiety. The introduction of fluorine moieties in molecules has unique effects on biological activity (see original citations in [16]). [Pg.607]

Pattison, F.L.M. "Toxic Aliphatic Fluorine Compounds". Elsevier Press, London, 1959. [Pg.144]

The synthesis of fluorinated aliphatic compounds is the main topic of this chapter. Indeed, numerous aromatic fluorinated products are available commercially. Moreover, in contrast to aliphatic molecules, their synthesis has not undergone significant evolution in the last few years. The synthesis of highly fluorinated compounds is also not considered here, since these compounds are much more involved in the formulation sciences than in medicinal chemistry. In this chapter, the synthesis of fluorinated compounds is dealt with in the following order monofluorinated, then difluoro-methylated, and finally trifluoromethylated molecules. [Pg.24]

Release agents function by either lessening intermolecular interactions between the two surfaces in contact or preventing such close contact. Thus, they can be low surface-tension materials based on aliphatic hydrocarbon, fluorocarbon groups, or particulate solids. The principal categories of material used are waxes, fatty acid metal soaps, other long-chain alkyl derivatives, polymers, and fluorinated compounds. [Pg.99]

Because the forces of attraction prevail when molecules are brought into sufficiently dose proximity under normal conditions, release is best effected if both the strength of the interaction and the degree of contact are minimized. Aliphatic hydrocarbons and fluorocarbons achieve the former effect, finely divided solids the latter. Materials such as microcrystalline wax [64742 42-3] and hydrophobic silica [7631-86-9] combine both effects. Some authors refer to this combined effect as the ball bearing mechanism. A perfluoroalkylated fullerene nanosphere would perhaps be the ultimate example of this combined effect (17). These very general mechanistic remarks can be supplemented by publications on the mechanism of specific classes of release agents such as metallic stearates (18), fatty acids and fluorinated compounds (19), and silicone-coated rdease papers (20,21). The mechanism of release of certain problem adherents, eg, polyurethanes, has also been addressed (22,23). [Pg.101]

Lovelace. A. M. Rausch, D.A. Postelnek, W. Aliphatic Fluorine Compounds Reinhold New York. 1958. [Pg.11]

Clearly, Greek or Latin numeral roots in conjunction with numerical locants can be used to indicate the number and positions of fluorine substituents in any type of organo-fluorine compound or group, ranging from monofluorinated systems, e.g. 2-fluorobutane (1), to perfluorinated entities, e.g. l,l,l,2.2,3,4,4,4-nonafluoro-3-iodobutane(2). Fluorine locants may be omitted, and often are in non-indexing situations when naming simple and therefore easily visualized fully fluorinated aliphatic/cycloaliphatic or monocyclic aromatic compounds or groups, e.g. octafluoropropane (3), hexafluorocyclopropane (4), pentafluoropropanoic acid, (5). pentafluorophenyl (6). [Pg.12]

The replacement of the nitro group by fluorine in aliphatic compounds appears to be much less well known than in the aromatic series. The possibility of nitro group displacement in aromatic compounds was noted during the study of halide displacement in halo-substituted 2,4-dinitrobenzenes. The appearance of brown fumes and formation of traces of lower boiling products resulted in studying the exchange of the nitro group in 2,3,5,6-tetrachloro-l-nitroben-... [Pg.573]

Replacement of an Amino Group by Fluorine in Aliphatic Compounds... [Pg.729]

Dehalogenation and dehydrohalogenation are the main synthetic methods for the preparation of all classes of fluorinated unsaturated aliphatic compounds, which are often used as monomers and/or chemical intermediates. [Pg.133]


See other pages where Aliphatic Fluorine Compounds is mentioned: [Pg.433]    [Pg.334]    [Pg.495]    [Pg.219]    [Pg.219]    [Pg.547]    [Pg.12]    [Pg.589]    [Pg.61]    [Pg.59]    [Pg.411]    [Pg.427]    [Pg.545]    [Pg.846]    [Pg.346]   


SEARCH



Aliphatic compounds

Aliphatics compounds

Aliphatics, fluorination

FLUORINATED ALIPHATIC COMPOUNDS

Fluorination aliphatic

Fluorination compounds

Fluorine compounds

Fluorine compounds, aliphatic tables

Trichloro FLUORINECOMPOUNDS,ORGANIC - FLUORINATED ALIPHATIC COMPOUNDS] (Vol

© 2024 chempedia.info