Results 21 to 30 of about 1,150 (193)

Chalcogen-Guided Control of Azoarene Photoswitching: Tuning Excited-State Energies Through Electronic Property Modulation. [PDF]

Chemistry
Photophysical properties of ortho‐tellurium‐substituted azoarenes are tunable via aryl substituent electronics and tellurium oxidation state. Electron‐donating groups destabilize the excited state three‐electron σ bond, enhancing photoisomerization.
Scheller ZN, Schulte J, Wölper C, Haberhauer G.   +3 more
europepmc   +2 more sources

Dihalogens Binding and Activation by Imidazoline-2-Chalcogenone Model Derivatives: Insight from a Computational Approach. [PDF]

Chemistry
1,3‐dimethyl‐4‐imidazoline‐2‐chalcogenones react with dihalogens, initially forming a charge‐transfer (CT) adduct, which may evolve to the most stable T‐shaped hypercoordinate (TY) species. However, in silico results show that the CT adduct is more stable than the corresponding TY species for the sulfur and iodine combination.
Zeppilli D, Madabeni A, Aragoni MC, Arca M, Orian L, Lippolis V.   +5 more
europepmc   +2 more sources

The Cellular Thioredoxin-1/Thioredoxin Reductase-1 Driven Oxidoreduction Represents a Chemotherapeutic Target for HIV-1 Entry Inhibition. [PDF]

PLoS ONE, 2016
BACKGROUND:The entry of HIV into its host cell is an interesting target for chemotherapeutic intervention in the life-cycle of the virus. During entry, reduction of disulfide bridges in the viral envelope glycoprotein gp120 by cellular oxidoreductases is
Kathrin Reiser, Leen Mathys, Sophie Curbo, Christophe Pannecouque, Sam Noppen, Sandra Liekens, Lars Engman, Mathias Lundberg, Jan Balzarini, Anna Karlsson   +9 more
doaj   +1 more source

Maleic Anhydride and Its Derivatives: A Brief Review of Reactivity and Properties in Radical (Co)Polymerizations. [PDF]

Macromol Rapid Commun
Maleic anhydride (MAnh) and its derivatives are underutilized monomer classes, each with unique reactivities and properties, which afford the synthesis of highly functional (co)polymers. This review explores the current understanding, opportunities, and limitations associated with maleic anhydride and its derivatives in conventional radical and ...
Smith MP, Klumperman B.
europepmc   +2 more sources

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

Heteroatom 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, Aundrea M. Lee, Donna V. Franklin, Frank R. Fronczek, Thomas Junk   +4 more
doaj   +1 more source

Microwave-Assisted Group-Transfer Cyclization of Organotellurium Compounds [PDF]

The Journal of Organic Chemistry, 2004
Primary- and secondary-alkyl aryl tellurides, prepared by arenetellurolate ring-opening of epoxides/ O-allylation, were found to undergo rapid (3-10 min) group-transfer cyclization to afford tetrahydrofuran derivatives in 60-74% yield when heated in a microwave cavity at 250 degrees C in ethylene glycol or at 180 degrees C in water. To go to completion,
Cecilia, Ericsson, Lars, Engman
openaire   +3 more sources

Stabilization of 2-Pyridyltellurium(II) Derivatives by Oxidorhenium(V) Complexes

Chemistry, 2023
Zwitterionic compounds such as pyridine-containing tellurenyl compounds are interesting building blocks for heterometallic assemblies. They can act as ambiphilic donor/acceptors as is shown by the products of reactions of the zwitterions HpyTeCl2 or ...
Felipe Dornelles da Silva, Maximilian Roca Jungfer, Adelheid Hagenbach, Ernesto Schulz Lang, Ulrich Abram   +4 more
doaj   +1 more source

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

, 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, Douglas O.C. Mariano, Emily P. Waczuk, Felix Antunes Soares, Josiane Allebrandt, João Batista T. Rocha, Waseem Hassan   +6 more
core   +1 more source

A glimpse on biological activities of tellurium compounds [PDF]

, 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 ...
Cunha, Rodrigo Luiz Oliveira Rodrigues, Gouvea, Iuri Estrada, Juliano, Luiz   +2 more
core   +5 more sources

2-chlorovinyl tellurium dihalides, (p-tol)Te[C(H)=C(Cl)Ph]X2 for X = Cl, Br and I: variable coordination environments, supramolecular structures and docking studies in cathepsin B [PDF]

, 2010
Crystallography shows that the Te atom in each of (p-tol)Te[C(H)=C(Cl)Ph]X2, for X = Cl (1), Br (2) and I (3), is within a distorted Ψ-pentagonal bipyramidal geometry.
Caracelli, Ignez, Guadagnin, Rafael Carlos, Maganhi, Stella H, Stefani, Hélio A, Tiekink, Edward R. T, Zukerman-Schpector, Julio   +5 more
core   +1 more source