Results 21 to 30 of about 1,661,386 (133)

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

Molecules, 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, Lisa M. Muller, Meredith A. Lang, Eduardo E. Alberto, Michael R. Detty   +4 more
doaj   +1 more source

Protective effect of the organotelluroxetane RF-07 in pilocarpine-induced status epilepticus

Neurobiology of Disease, 2008
Temporal lobe epilepsy is the most common form of epilepsy in humans. Caspase activation is a mechanism of cell death induced by seizures. Tellurium (IV) compounds present antitumoral, immunomodulatory and neuroprotective effects due to their ability to ...
Daniele Suzete Persike, Rodrigo Luiz Oliveira Rodrigues Cunha, Luiz Juliano, Iara Ribeiro Silva, Fernanda Elisa Rosim, Thiago Vignoli, Flavia Dona, Esper Abrão Cavalheiro, Maria José da Silva Fernandes   +8 more
doaj   +1 more source

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

Synthesis and characterization of some new organotellurium compounds based on quinoline [PDF]

, 2017
A new series of organotellurium compounds based on quinoline were prepared by the reaction of 8-(quinolyl)mercuric chloride (1) with tellurium tetrabromide in 1:1 and 1:2 mole ratio in dry dioxane to obtain 8-(quinolyl)tellurium tribromide (2) and bis[8-(
Jaid, Haider Abdul-Sattar, Adil Ali Al-Fregi, Haider Abdul-Sattar Jaid, Abdulsahib, Hassan Thamir, Hassan Thamir Abdulsahib, Al-Fregi, Adil Ali   +5 more
core   +1 more source

Synthesis and characterization of carbonyl functionalized organotellurium(iv) derivatives. [PDF]

RSC Adv
Aryltellurium trichlorides, ArTeCl3 (Ar = C6H5, Ph; 4-Me-C6H4, p-Tol; 1-C10H7, 1-Nap; 2,4,6-Me3C6H2, Mes) react under mild conditions with acetylacetone/benzoylacetone to give carbonyl functionalized organotellurium(iv ...
Singh P, Khan M, Duthie A, Butcher RJ.
europepmc   +2 more sources

Kumada-Tamao Catalyst-Transfer Condensation Polymerization of AB₂ Monomer: Synthesis of Well-Defined Hyperbranched Poly(thienylene-phenylene). [PDF]

Macromol 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, Hirota T, Yamamoto A, Yokozawa T.   +3 more
europepmc   +2 more sources

Structure of organotellurium compounds.

, 2016
Structure of organotellurium compounds.
Jan Balzarini (161754), Lars Engman (1292892), Sophie Curbo (386586), Sam Noppen (253207), Kathrin Reiser (606411), Christophe Pannecouque (496139), Mathias Lundberg (85855), Anna Karlsson (21145), Leen Mathys (589241), Sandra Liekens (355811)   +9 more
core   +1 more source

Synthetic and Theoretical Studies on Group-Transfer Imidoylation of Organotellurium Compounds. Remarkable Reactivity of Isonitriles in Comparison with Carbon Monoxide in Radical-Mediated Reactions

, 2016
Imidoylation of organotellurium compounds with isonitriles has been investigated in conjunction with the radical-mediated C1 homologation reaction by using CO and isonitriles.
Masahiro Hashidume (2983689), Hiroshi Miyazoe (2430655), Ryuta Goto (2983683), Shigeru Yamago (1325364), Takashi Sawazaki (2983686), Jun-ichi Yoshida (1633279)   +5 more
core   +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

Selenium- and Tellurium-Based Antioxidants for Modulating Inflammation and Effects on Osteoblastic Activity

Antioxidants, 2017
Increased oxidative stress plays a significant role in the etiology of bone diseases. Heightened levels of H2O2 disrupt bone homeostasis, leading to greater bone resorption than bone formation. Organochalcogen compounds could act as free radical trapping
Xi Lu, Gemma Mestres, Vijay Pal Singh, Pedram Effati, Jia-Fei Poon, Lars Engman, Marjam Karlsson Ott   +6 more
doaj   +1 more source