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A Anionic

S. Boileau, ia J. E. McGrath, A., Anionic Polymeri tion, ACS Symposium Series 166, American Chemical Society, Washington, D.C., 1981. [Pg.63]

W. M. Linfield, A., Anionic Sufactants Sufactant Science Series, Vol. 7, Marcel Dekker, Inc., New York, 1976. [Pg.263]

C Cation transfer membrane A Anion transfer membrane... [Pg.2029]

C — Cation Selective Membrane A — Anion Selective Membrane... [Pg.341]

D-Methylmalonyl-CoA, the product of this reaction, is converted to the L-isomer by methylmalonyl-CoA epunerase (Figure 24.19). (This enzyme has often and incorrectly been called methylmalonyl-CoA racemase. It is not a racemase because the CoA moiety contains five other asymmetric centers.) The epimerase reaction also appears to involve a carbanion at the a-position (Figure 24.20). The reaction is readily reversible and involves a reversible dissociation of the acidic a-proton. The L-isomer is the substrate for methylmalonyl-CoA mutase. Methylmalonyl-CoA epimerase is an impressive catalyst. The for the proton that must dissociate to initiate this reaction is approximately 21 If binding of a proton to the a-anion is diffusion-limited, with = 10 M sec then the initial proton dissociation must be rate-limiting, and the rate constant must be... [Pg.791]

Figure 7. Current-potential curve of a bipolar membrane of hydrous ironflll) oxide in chloride solution. FeCl3(aq)/Fe(HI)(oxideyNaCl(aq)-Na2Mo04(aq).l The system is kept at room temperature. C, cation A, anion. (Reproduced bom M. Sakashita and N. Sato, Corrosion 35,351,1979, Fig. 4 with permission from NACE International.)... Figure 7. Current-potential curve of a bipolar membrane of hydrous ironflll) oxide in chloride solution. FeCl3(aq)/Fe(HI)(oxideyNaCl(aq)-Na2Mo04(aq).l The system is kept at room temperature. C, cation A, anion. (Reproduced bom M. Sakashita and N. Sato, Corrosion 35,351,1979, Fig. 4 with permission from NACE International.)...
In equilibrium dialysis of a solution of a polyanion (valence Zp negative) with molar concentration Cp against a solution of imi-imivalent electrolyte CA (C = cation, A = anion) with molar concentration Cqa it was shown that the requirement for equal chemical potentials of the salt in the polyanion (a) and diffusate ()) phases results in the following relation... [Pg.248]

In THF at -20°C the N-trimethylsilylated 2-pyrrolidinone 388 is converted by LDA into the a-anion which, on reaction with 1949 and subsequent acidification with AcOH, gives 43% 3-hydroxy-2-pyrrolidinone 1962 [150]. Lithium enolates of ketones such as camphor react with BTSP 1949 to give >95% of a mixture of exo-and mdo-2-hydroxycamphor [151]. Lithiated methyl heterocycles such as lithiated 2-methylpyridine 1963 are converted into mixtures of the 0-SiMe3 1964 and C-SiMe3 1965 compounds and C-methylated compounds such 1966 [152]. 2-Lithioto-luene 1967 is oxidized by 1949 into 1968 [140, 145] (Scheme 12.42). [Pg.286]

Ligand A anionic (e.g., halides, pseudohalides, alkyl, aryl, thiolate, alkoxide) ligand N neutral (e.g., amines, imines, phosphines, carbenes, nitriles, isonitriles, NO, CO) ligand C cationic (e.g., NO+)... [Pg.180]

Gale, P. A. Anion receptor chemistry highlights from 1999. Coord. Chem. Rev. 2001, 213, 79-128. [Pg.800]

Figure 9.4. Schematic representation of carrier-mediated metal-ion transport through a liquid membrane (A = anion). Figure 9.4. Schematic representation of carrier-mediated metal-ion transport through a liquid membrane (A = anion).
Some key reactions relevant to this section were not covered in CHEC-II(1996) <1996CHEC-II(4)179>, and hence some references to important work prior to the appearance of CHEC-IK1996) are included. Nonetheless, CHEC-11(1996) does contain many pertinent reactions of ring carbon substituents, such as important information on Curtius rearrangements and a-anion formation and reactivity. [Pg.263]


See other pages where A Anionic is mentioned: [Pg.2575]    [Pg.82]    [Pg.244]    [Pg.694]    [Pg.297]    [Pg.173]    [Pg.236]    [Pg.89]    [Pg.96]    [Pg.96]    [Pg.96]    [Pg.161]    [Pg.650]    [Pg.224]    [Pg.279]    [Pg.74]    [Pg.198]    [Pg.598]    [Pg.650]    [Pg.26]    [Pg.67]    [Pg.794]    [Pg.918]    [Pg.232]    [Pg.50]    [Pg.98]    [Pg.305]    [Pg.204]    [Pg.792]    [Pg.497]    [Pg.130]    [Pg.265]    [Pg.523]   


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1.4- reduction/a-anion trapping

A New Reactive Intermediate The Homoenolate Anion

A radical anion

A single anion diffusing near several stationary cations

A-4-thiazoline-2-thione anion

A-Allyloxy anions

A-Allyloxy anions 2,3]-Wittig rearrangement

A-Dawson anions

A-Keggin anions

A-Ketols via samarium acyl anions

A-Naphthylmethyl anions

A-Nitrile anions

A-Nitrile anions conjugate addition reactions

A-Silyl anion

Acidity of a-Hydrogens the Enolate Anion

Amide a-anions

Anion A negative ion

Anion A negatively charged ion

Anion A negatively charged ion that

Anion as a Prosthetic Group for Labelling Proteins with Astatine

Anion as weak bases

Anion exchange resin as catalyst for cyanoethylation

Anion-Radicals Containing a Furan Ring and Isoelectronic Species

Anion-Radicals Containing a Thiophene Ring

Anions (A Review)

Anions as Electron Donors in Charge-Transfer Salts

Anions as ligands

Anions as nucleophiles

As acyl anion equivalents

Asymmetric a-amino anions

Borane, triethylreaction with thioallyl anions a-selectivity

Catalytic Cycles Involving Iodide Anion or Elemental Iodine as Pre-catalysts

Charge unsymmetrical mixtures which contain a common anion

Cyanohydrins ethers of, as acyl anion equivalents

Dithianes as acyl anion equivalent

Enolate anion as nucleophile

Enolate anions, a-alkylation

Enzymatic Synthesis of PANI Using Anionic Micelles as Templates

Ethylene, diphenylarsenoreaction with organolithium compounds formation of a-arseno anions

Formation of a (Non-solvated) Complex Anion

Formation of anionic a-adducts from heteroaromatic compounds

Halide anions as co-catalysts

Imines a-trialkylsilyl-stabilized anions

Imines reactions with a-silylbenzylic anions

Indirect Electrochemical Reductions Using Radical Anions or Dianions of Organic Compounds as Mediators

Ion-pair extraction of an anionic surfactant with a cationic dye

Ketyl radical anion, as indicator in THF pinacol reaction

Labile Complexes as Anion Hosts

Lithium, a-methoxyvinylacyl anion equivalent

Lithium, a-selenoalkylacyl anion equivalents

Lithium, a-selenoalkylacyl anion equivalents alkylation

Lithium, a-selenoalkylacyl anion equivalents allylation

Lithium, a-selenoalkylacyl anion equivalents reactions

Lithium, a-selenoalkylacyl anion equivalents reactions with carbonyl compounds

Lithium, a-selenoalkylacyl anion equivalents synthesis

Lithium, a-thioalkylacyl anion equivalents

Lithium, a-thioalkylacyl anion equivalents alkylation

Lithium, a-thioalkylacyl anion equivalents reactions

Lithium, a-thioalkylacyl anion equivalents synthesis

Mesitylene-a-sulphonate anion

Nitriles, a- acyl anion equivalents

Nitriles, a-aminoacyl anion equivalents

Nitriles, a-aminoacyl anion equivalents synthesis

Nitriles, a-aminoacyl anion equivalents via Lewis acid catalysis

Organotin Compounds as Anion-Selective Carriers in Chemical Sensors

Other stabilized anions as nucleophiles nitriles and nitromethane

Oxidations Using Inorganic Anions as Redox Catalysts

P-Nitrophenolate anion, as a leaving grou

Permeation as an Anion

Phase-Transfer-Catalyzed Addition of Anion Supplied as Metal Salt

Protonation of a carbocation-anion pair

Radical anions, as intermediates

Rare Earth Complexes as Luminescent Chemosensors for Anions

Real-time dynamics of electron migration in a model water cluster anion system

Sulfides, a-lithio anions

Sulfoxides a-alkylthio, as acyl anion equivalent

Sulfoxides, a-lithio anions

Superoxide Anion Radical as a Substrate

Synthesis of complexes containing classically noncoordinating anions as ligands

Tribenzotriquinacenes, as radical anion

Triquinacenes as radical anion precursors

Two- and Threefold Anionic Processes Followed by a Nonanionic Process

Waxes anions as weak bases

Wittig reagent of a-allyloxy anions

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