Results 241 to 250 of about 32,282 (298)
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Interaction of Aliphatic Amines with Glycogen Phosphorylase
The Journal of Biochemistry, 1982A number of aliphatic amines was shown to stimulate AMP-dependent activity of phosphorylase b. The extent of stimulation depends on the molecular structure of amines. For linear amines, the longer the linear chain, the greater the stimulation observed.
Ktenas, T. B. +4 more
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Fluorescence of aliphatic amines
Chemical Physics Letters, 1971Abstract Fluorescence of several tertiary aliphatic amines has been excited in the gas phase by absorption of 206.2 nm radiation, i.e. in the band corresponding to the A - X transition of NH3. No fluorescence was obtained from molecules having hydrogen or deuterium bonded directly to the nitrogen atom.
C.G. Freeman +3 more
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QSARs for selected aliphatic and aromatic amines
Science of The Total Environment, 1991The relative toxicity of 24 selected amines was evaluated in the 48 h Tetrahymena pyriformis static population growth impairment assay and compared with literature data for the 96 h Pimephales promelas flow-through mortality assay. Chemicals selected included normal and branched aliphatic primary amines, 4-position alkyl-substituted primary aromatic ...
T W, Schultz +3 more
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Computational Studies of Aliphatic Amine Basicity
The Journal of Organic Chemistry, 2002Computational studies have been used to examine the structural and energetic effects of adding small numbers of water molecules to ammonia, methylamine, dimethylamine, and trimethylamine, and their respective ammoniums ions using the effective fragment potential method.
Douglas C, Caskey +2 more
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Reaction of succinonitrile with aliphatic amines
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1973The reaction of primary amines with succinonitrile leads to the formation of N,N,N′,N′-tetrasubstituted amidines and the liberation of 2 M of NH3. The reaction of secondary amines with succinonitrile proceeds as an intramolecular condensation with the liberation of 1 M of NH3 per mole of the dinitrile and the formation of the Δ2,5−α, α ...
V. A. Keppen +4 more
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The solubility of hydrogen in aliphatic amines
The Canadian Journal of Chemical Engineering, 1972AbstractThe solubility of hydrogen in ammonia, monomethylamine, monoethylamine and n‐propylamine was determined at temperatures from −70°C to 25°C and in 1,2‐propanediamine and 1,2‐ethanediamine over the temperature ranges −25°C to 11°C and 25°C to 34°C respectively. Measurements were made at total pressures up to 300 psig.
R. G. Moore, F. D. Otto
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Reaction of chromocene with aliphatic amines
Journal of Organometallic Chemistry, 1980Abstract Crystalline chromocene reacts with vapours of primary aliphatic linear ( n = 2 to 4) amines at a temperature of 25°C to form solid aminates of the type Cr(C 5 H 5 ) 2 (RNH 2 ) x . The reaction is reversible. The aminates are paramagnetic magnetically diluted powders.
J. Kalousová +3 more
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A test for the subclasses of aliphatic amines
Journal of Chemical Education, 1964Describes an investigation into the use of 3,3',5,5'-tetrabromophenolphthalein ethyl ester, also named bromo-phthalein magneta E, as a reagent for subclassifying aliphatic amines.
J. L. Valentine +2 more
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Aliphatic amines in the Murchison meteorite
Nature, 1976The paper reports on the determination of aliphatic amines in water extracts of the Murchison meteorite. The amines were analyzed by gas chromatography both as the free amines and as 2,4-dinitrophenyl (DNP) derivatives. The results give evidence for the presence of all of the possible primary aliphatic monoamines (eight) with fewer than five carbon ...
GREGORY JUNGCLAUS +3 more
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