Results 161 to 170 of about 5,897 (227)

Synthesis of a novel nanomagnetic N₄ bis schiff base complex of copper(ii) as an efficient catalyst for click synthesis of tetrazoles. [PDF]

Nanoscale Adv
Hsu CY, AlBajalan AR, AlBajalan AR, Awad SA, Suliman M, Juraev N, Rodriguez-Benites C, AlMohamadi H, Kadhim AJ.   +8 more
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Novel, nanomagnetic and recoverable copper(0)-catalyst in one-pot access to 1,4-disubstituted 1,2,3-triazoles and 5-substituted 1H-tetrazoles in water. [PDF]

R Soc Open Sci
Amiri M, Bagherzadeh N, Sardarian AR.
europepmc   +1 more source

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Synthesis of (difluoroamino)tetrazoles and [(difluoroamino)alkyl]tetrazoles

Russian Chemical Bulletin, 2000
(Difluoroamino)tetrazoles were obtained by direct fluorination of 5-aminotetrazoles with gaseous fluorine. Reactions of 2-(oxoalkyl)- and 2-(hydroxyalkyl)tetrazoles with difluoroamine yielded [(difluoroamino)alkyl]tetrazoles.
A. V. Fokin, Yu. N. Studnev, V. P. Stolyarov, A. A. Mel'nikov   +3 more
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Nitroimino-tetrazolates and Oxy-nitroimino-tetrazolates

Journal of the American Chemical Society, 2010
Highly energetic 1,1'-ethylenebis(oxy)bis(5-nitroimino-tetrazolate) salts were obtained by reacting equimolar quantities of the acidic 1,1'-ethylenebis(oxy)bis(5-nitroimino-tetrazole) and energetic bases in aqueous solution. Additionally, metathesis of silver 1,1'-ethylenebis(oxy)bis(5-nitroimino-tetrazolate) with diaminoguanidinium chloride or ...
Young-Hyuk, Joo, Jean'ne M, Shreeve
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Relation between the substituent effect and aromaticity in tetrazoles, protonated tetrazoles and tetrazolate derivatives

Journal of Molecular Structure: THEOCHEM, 2007
Abstract The energies, geometries and aromaticity of a series of 5R tetrazoles [R = NH 2 , OH, OCH 3 , SCH 3 , H, CH 3 , F, Cl, BH 2 , CF 3 , CN, NO, NO 2 ], their anions and protonated forms in the gas phase have been calculated with the DFT/B3LYP method at the 6-31++G ∗∗ level.
Alireza Najafi Chermahini, Hossein Abdol Dabbagh, Abbas Teimouri   +2 more
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Protolytic Equilibria in Tetrazoles

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
R. E. Trifonov, V. A. Ostrovskii
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Tetrazoles: XLV. Amidoalkylation of 5-Substituted Tetrazoles

Russian Journal of Organic Chemistry, 2003
Amidoalkylation of 5-aryl(hetaryl)tetrazoles with N-hydroxymethylamides of aliphatic and aromatic carboxylic acids occurs regioselectively and yields mainly 5-aryl(hetaryl)-2-acylaminomethyltetrazoles. These compounds arefairly stable in neutral media but are smoothly deprotected by the action of aqueous sodium hydroxide or hydrochloric acid.
L. V. Myznikov, K. A. Esikov, T. V. Artamonova, G. I. Koldobskii   +3 more
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Tetrazoles

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Tetrazoles: XLVII. A route to tetrazole-containing dendrimers

Russian Journal of Organic Chemistry, 2004
The reaction of 5-methylsulfonyl-1-phenyltetrazole with pentaerythritol in acetonitrile in the presence of sodium hydroxide gave tetrakis(1-phenyltetrazol-5-yloxymethyl)methane. Sulfur-containing analog of the latter was obtained by alkylation of 1-phenyl-4,5-dihydrotetrazole-5-thione with 1,3-dibromo-2,2-bis-(bromomethyl)propane.
T. V. Artamonova, M. V. Zatsepina, G. I. Koldobskii   +2 more
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