Results 221 to 230 of about 12,858 (265)

Tetrazoles: XLVII. A route to tetrazole-containing dendrimers [PDF]

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.
G. I. Koldobskii, T. V. Artamonova, M. V. Zatsepina   +2 more
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Protolytic Equilibria in Tetrazoles [PDF]

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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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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ChemInform Abstract: Synthesis of (Difluoroamino)tetrazoles and [(Difluoroamino)alkyl]tetrazoles

ChemInform, 2000
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Yu. N. Studnev, V. P. Stolyarov, A. V. Fokin, A. A. Mel'nikov   +3 more
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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.
Abbas Teimouri, Hossein A. Dabbagh, Alireza Najafi Chermahini   +2 more
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Tetrazoles: XLIX. Alkylation of tetrazoles with tetrakis(chloroacetoxymethyl)methane [PDF]

Russian Journal of Organic Chemistry, 2006
Alkylation of 1-aryl-4,5-dihydro-1H-tetrazol-5-ones and 1-phenyl-4,5-dihydro-1H-tetrazole-5-thione with tetrakis(2-chloroacetoxymethyl)methane in boiling acetonitrile in the presence of potassium bromide and triethylamine gives tetrakis[2-(4-aryl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)acetoxymethyl]-methanes and tetrakis[2-(1-phenyl-1H-tetrazol-5 ...
G. I. Koldobskii, M. V. Zatsepina, T. V. Artamonova   +2 more
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Silylated Tetrazoles and Triazoles

Zeitschrift für anorganische und allgemeine Chemie, 2009
Abstract1‐Dimethysilyltetrazole (1) has been prepared from 1H‐tetrazole and chlorodimethylsilane in the presence of 2,6‐lutidine, bis(1‐tetrazolyl)dimethylsilane (2) from the reaction of 1H‐tetrazole, dimethyldichlorosilane and triethylamine and 5‐(trimethylsilylamino)‐1H‐tetrazole (3) from 5‐amino‐tetrazole monohydrate and hexamethyldisilazane.
Gronde, Ingo, Mitzel, Norbert W.
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Tetrazoles for biomedicine

Russian Chemical Reviews, 2019
The tetrazole ring is an important pharmacophore. It is a structural component in many drugs, drug candidates (or lead compounds) and various biochemical reagents.
E. A. Popova, Rostislav E. Trifonov, Rostislav E. Trifonov, Vladimir A. Ostrovskii   +3 more
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