Results 211 to 220 of about 9,434 (258)
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Azide Phosphoramidite in Direct Synthesis of Azide-Modified Oligonucleotides
Organic Letters, 2014Azide and phosphoramidite functions were found to be compatible within one molecule and stable for months in solution kept frozen at -20 °C. An azide-carrying phosphoramidite was used for direct introduction of multiple azide modifications into synthetic oligonucleotides.
Maksim A, Fomich +6 more
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The Journal of Chemical Thermodynamics, 1990
Abstract The standard ( p ⊖ = 0.1 MPa ) molar enthalpy of formation of ammonium azide at 298.15 K has been derived from measurements of the energy of combustion in oxygen as Δ f H m ⊖ (cr) = (114.14±0.94) kJ·mol −1 . From measurements of the molar enthalpy of solution of NH 4 N 3 (cr) in water, the value
Arthur Finch +3 more
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Abstract The standard ( p ⊖ = 0.1 MPa ) molar enthalpy of formation of ammonium azide at 298.15 K has been derived from measurements of the energy of combustion in oxygen as Δ f H m ⊖ (cr) = (114.14±0.94) kJ·mol −1 . From measurements of the molar enthalpy of solution of NH 4 N 3 (cr) in water, the value
Arthur Finch +3 more
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Inorganic Chemistry, 2008
Ionic liquid azides from azidoethyl, alkyl, and alkenyl substituted derivatives of 1,2,4- and 1,2,3-amino-triazoles were prepared and examined for the first time to investigate their structural and physical properties. All reported salts possess melting points below 100 degrees C.
Stefan, Schneider +7 more
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Ionic liquid azides from azidoethyl, alkyl, and alkenyl substituted derivatives of 1,2,4- and 1,2,3-amino-triazoles were prepared and examined for the first time to investigate their structural and physical properties. All reported salts possess melting points below 100 degrees C.
Stefan, Schneider +7 more
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Chemistry – A European Journal, 2016
AbstractPure, solvent‐free Zn(N3)2 was prepared by reaction of diethyl zinc and hydrazoic acid in aprotic solvents. The single‐crystal structure determination, along with the comprehensive characterization of α‐Zn(N3)2 and two metastable polymorphs, could be achieved for the first time.
Axel, Schulz, Alexander, Villinger
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AbstractPure, solvent‐free Zn(N3)2 was prepared by reaction of diethyl zinc and hydrazoic acid in aprotic solvents. The single‐crystal structure determination, along with the comprehensive characterization of α‐Zn(N3)2 and two metastable polymorphs, could be achieved for the first time.
Axel, Schulz, Alexander, Villinger
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Solubility of Sodium Azide and Alpha-Lead Azide.
Journal of Chemical & Engineering Data, 1966The solubility of sodium azide was determined in water and in 40, 60, 80, and 95.5% ethanol-water mixtures, respectively. The solubilities were first determined by a synthetic method (9) which involved the preparation of a solution of known composition, the saturation point of which was determined by varying the temperature.
E. Lieber +3 more
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Pyrolysis of aryl azides. II. Naphthyl azides
Australian Journal of Chemistry, 1972Kinetic studies of the pyrolyses of 1- and 2-naphthyl azides reveal neighbouring group participation by nitro and phenylazo substituents. The acceleration observed in 1-nitro-2-naphthyl azide, 1-phenylazo-2-naphthyl azide, and 2-nitro-1-naphthyl azide is 1730-, 211-, and 23.6-fold, respectively, in nitrobenzene solution at 120º.
G Boshev, LK Dyall, PR Sadler
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Mutation Research/Reviews in Genetic Toxicology, 1978
A, Kleinhofs, W M, Owais, R A, Nilan
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A, Kleinhofs, W M, Owais, R A, Nilan
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2013
Chemical activation (the formation of 'hot' molecules due to chemical reactions) is ubiquitous in flash vacuum thermolysis (FVT) reactions, and awareness of this phenomenon is indispensable when designing synthetically useful gas-phase reactions. Chemical activation is particularly prevalent in azide chemistry because the interesting singlet nitrenes ...
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Chemical activation (the formation of 'hot' molecules due to chemical reactions) is ubiquitous in flash vacuum thermolysis (FVT) reactions, and awareness of this phenomenon is indispensable when designing synthetically useful gas-phase reactions. Chemical activation is particularly prevalent in azide chemistry because the interesting singlet nitrenes ...
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1962
Publisher Summary This chapter discusses glycosyl fluorides and their derivatives and glycosyl azides and carbohydrates containing fluorine at nonglycosidic carbon atoms. Poly- O -acetylglycosyl halides of the carbohydrates investigate the proportionality relations that exist between the optical rotations and the diameters of the respective halogen ...
F, MICHEEL, A, KLEMER
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Publisher Summary This chapter discusses glycosyl fluorides and their derivatives and glycosyl azides and carbohydrates containing fluorine at nonglycosidic carbon atoms. Poly- O -acetylglycosyl halides of the carbohydrates investigate the proportionality relations that exist between the optical rotations and the diameters of the respective halogen ...
F, MICHEEL, A, KLEMER
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Mercury Azides and the Azide of Millon’s Base
Angewandte Chemie International Edition, 2013Henrik, Lund +4 more
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