Results 21 to 30 of about 1,145 (188)

Synthesis, DFT Calculation and Biological Activity of Some Organotellurium Compounds Containing Azomethine Group

open access: yesOrbital: The Electronic Journal of Chemistry, 2019
The reaction of (4-amino-2,3-dichlorophenyl)mercury (II) chloride with 3,4-dihydroxy benzaldehyde produce the organomercury compound 1 in 82% yield. Tellurated of 1 with tellurium (IV) tetrabromide gave the tellurium (IV) tribromide Schiff base compound ...
Rafid Humiadan Al-Asadi
doaj   +3 more sources

Synthesis and Antimicrobial Evaluation of Some New Organic Tellurium Compounds Based on Pyrazole Derivatives

open access: yesMolecules, 2020
A novel series of organic tellurium compounds based on pyrazole derivatives with a general formula of ArTeBr3 and Ar2TeBr2 [Ar = 2-(3-(4-substituted phenyl)-5-(2-chlorophenyl)-1H-pyrazol-1-yl)-3,5-dinitrophenyl] were obtained by the refluxing of ...
Asmaa B. Sabti   +2 more
doaj   +1 more source

Differential genotoxicity of diphenyl diselenide (PhSe)2 and diphenyl ditelluride (PhTe)2 [PDF]

open access: yesPeerJ, 2014
Organoselenium compounds have been pointed out as therapeutic agents. In contrast, the potential therapeutic aspects of tellurides have not yet been demonstrated.
Daiane Francine Meinerz   +6 more
doaj   +2 more sources

Cyclization Reactions Involving 2-Aminoarenetellurols and Derivatives of α,β-Unsaturated Carboxylic Acids

open access: yesHeteroatom Chemistry, 2021
The reductive cyclization of arenetellurols carrying α,β-unsaturated amide functionalities in the ortho position was investigated. Conceptually, such compounds can form 1,3-tellurazoles without the involvement of the unsaturation in the ring closure ...
Jayna A. Patel   +4 more
doaj   +1 more source

Evaluation of the Organotellurium Compound AS101 for Treating Colistin- and Carbapenem-Resistant Klebsiella pneumoniae

open access: yesPharmaceuticals, 2021
Colistin- and carbapenem-resistant Enterobacteriaceae cases are increasing at alarming rates worldwide. Drug repurposing is receiving greater attention as an alternative approach in light of economic and technical barriers in antibiotics research.
Tsung-Ying Yang   +7 more
doaj   +1 more source

SYNTHESIS, CHARECTERIZATION AND ANTIOXIDANT ACTIVITY OF BIS [4-(4'-HYDROXY-3'-METHOXY BENZYLIDENE AMINO PHENYL)] TELLURIDE [PDF]

open access: yesBasrah Journal of Veterinary Research, 2014
Bis[4-(4'-hydroxy-3'-methoxy benzylidene amino phenyl)] telluride (R2Te) was prepared from the reaction of two moles of 4-(4'-hydroxy-5'-methoxybenzylidene amino phenyl) mercuric chloride and one mole of TeBr 4 in dry dioxane to give
Hiathem J. Kadhum   +2 more
doaj   +1 more source

A glimpse on biological activities of tellurium compounds

open access: yesAnais da Academia Brasileira de Ciências, 2009
Tellurium is a rare element which has been regarded as a toxic, non-essential trace element and its biological role is not clearly established to date. Besides of that, the biological effects of elemental tellurium and some of its inorganic and organic ...
Rodrigo L. O. R. Cunha   +2 more
doaj   +1 more source

Broadly Defined Antibiotic Adjuvants for <i>Pseudomonas aeruginosa</i>. [PDF]

open access: yesCan J Infect Dis Med Microbiol
Pseudomonas aeruginosa is a widely distributed opportunistic pathogen with multiple drug resistance, making it particularly challenging to treat in lower respiratory tract infections. Its resistance mechanisms are complex, including low outer‐membrane permeability, efflux pump overexpression, biofilm formation, and quorum sensing (QS) activation ...
Chen Z, Li Y, Song Y.
europepmc   +2 more sources

Xerogel-Sequestered Silanated Organochalcogenide Catalysts for Bromination with Hydrogen Peroxide and Sodium Bromide

open access: yesMolecules, 2015
While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates.
Caitlyn M. Gatley   +4 more
doaj   +1 more source

Kumada-Tamao Catalyst-Transfer Condensation Polymerization of AB<sub>2</sub> Monomer: Synthesis of Well-Defined Hyperbranched Poly(thienylene-phenylene). [PDF]

open access: yesMacromol Rapid Commun
Kumada‐Tamao catalyst‐transfer condensation polymerization of AB2 monomer in the presence of Ni(dppe)Cl2 in THF affords hyperbranched poly(thienylene‐phenylene) with a narrow molecular weight distribution and controlled molecular weight, which is close to the theoretical molecular weight calculated from the ratio of consumed AB2 monomer to Ni(dppe)Cl2.
Ohta Y   +3 more
europepmc   +2 more sources

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