Results 201 to 210 of about 18,166 (271)
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 +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, 2010Highly 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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Recent Developments in the Synthesis of Tetrazoles and their Pharmacological Relevance
Current organic chemistry, 2020The heterocycle ring tetrazole is an important moiety relevant to medicinal chemistry since it is present in some drugs with clinical importance. Its primary biological activity is being a bioisosteric analogue of the carboxylic acid and cis-amide ...
S. Leyva‐Ramos, Jaime Cardoso-Ortiz
semanticscholar +1 more source
ChemInform Abstract: Synthesis of (Difluoroamino)tetrazoles and [(Difluoroamino)alkyl]tetrazoles
ChemInform, 2000AbstractChemInform 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 +3 more
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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 +2 more
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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 +2 more
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Journal of Organic Chemistry, 2020
A Bu4NI-catalyzed regioselective N2-methylation, N2-alkylation and N2-arylation of tetrazoles have been achieved using tert-butyl hydroperoxide (TBHP) as the methyl, alkyl diacyl peroxides as the primary alkyl, alkyl peresters as the secondary and ...
Suresh Rajamanickam +7 more
semanticscholar +1 more source
A Bu4NI-catalyzed regioselective N2-methylation, N2-alkylation and N2-arylation of tetrazoles have been achieved using tert-butyl hydroperoxide (TBHP) as the methyl, alkyl diacyl peroxides as the primary alkyl, alkyl peresters as the secondary and ...
Suresh Rajamanickam +7 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 +2 more
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An Expeditious Approach to Tetrazoles from Amides Utilizing Phosphorazidates.
Organic Letters, 2020A novel method was developed for the synthesis of tetrazoles from amides utilizing diphenyl phosphorazidate or bis(p-nitrophenyl) phosphorazidate as both the activator of amide-oxygen for elimination and azide source.
Kotaro Ishihara, T. Shioiri*, M. Matsugi
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Magnetic nanomaterials catalyzed synthesis of tetrazoles
, 2020Tetrazoles are valuable molecules in pharmaceutical and agriculture chemistry, because they are excited in many drugs, natural products and biologically active molecules.
Muhammad Aqeel Ashraf +4 more
semanticscholar +1 more source