Results 91 to 100 of about 1,574,989 (184)

Diselenide‐Catalyzed Asymmetric Allenylation of Alkynes

European Journal of Organic Chemistry, Volume 29, Issue 11, 16 March 2026.
An asymmetric allenylation of alkynes is described using chiral lactamides‐based diselenides under oxidative conditions. This led to the corresponding allenylamides with enantiomeric excesses up to 72%, and uncovers an interesting stereodivergency feature related to the β‐H‐syn‐elimination of transient Se(IV) intermediates.
Rongyu Sun, Emilie Viaud, Murielle Berlande, Stéphane Quideau, Patrick Y. Toullec, Philippe A. Peixoto   +5 more
wiley   +1 more source

Crystal structure of 1-bromo-2-(phenylselenyl)benzene

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C12H9BrSe, the Se atom exhibits a bent geometry, with a C—Se—C bond angle of 99.19 (6)°. The ortho Se and Br atoms are slightly displaced from opposite faces of the mean plane of the benzene ring [by 0.129 (2) and 0.052 (2) Å ...
Bronte J. Charette, Jamie S. Ritch
doaj   +1 more source

Lactiplantibacillus plantarum S1 as a Novel Dual-Functional Probiotic Strain for High-Efficiency Organoselenium Biotransformation in Functional Food Development

Foods
The microbial conversion of inorganic Se into bioactive organoselenium compounds represents a cutting-edge strategy for developing functional foods with enhanced nutritional value.
Lin Yuan, Jianfeng Yuan, Chen Gao, Haoming Zhao, Chengye Wu, Zhong-Hua Yang   +5 more
doaj   +1 more source

New Chiral Ebselen Analogues with Antioxidant and Cytotoxic Potential

Molecules, 2017
New chiral camphane-derived benzisoselenazol-3(2H)-ones and corresponding diselenides have been synthetized using a convenient one-pot procedure. Se-N bond was efficiently converted to an Se-Se bond, which could also be easily re-oxidized to the initial ...
Agata J. Pacuła, Katarzyna B. Kaczor, Jędrzej Antosiewicz, Anna Janecka, Angelika Długosz, Tomasz Janecki, Andrzej Wojtczak, Jacek Ścianowski   +7 more
doaj   +1 more source

Organoselenium Compounds as Catalysts in Nature and Laboratory

, 2010
The importance of selenium as essential trace element is today generally recognized. The major biological form of this element is represented by the selenocysteine, incorporated into certain protein having redox motifs.
SANTORO, STEFANO, SANTI, Claudio, Benedetta Battistelli, Claudio Santi, B. Battistelli, Stefano Santoro   +5 more
core   +1 more source

Protecting Groups for Organoselenium Compounds

, 2016
Protecting Groups for Organoselenium ...
William A. Reinerth (2665285), James M. Tour (1274196)   +1 more
core   +1 more source

Organoselenium compounds as antioxidants

Arkivoc, 2022
Magdalena Obieziurska-Fabisiak, Agata J. Pacuła-Miszewska, Anna Laskowska, Jacek Ścianowski   +3 more
openaire   +1 more source

The combination of organoselenium compounds and guanosine prevents glutamate-induced oxidative stress in different regions of rat brains [PDF]

, 2012
This study was designed to investigate the protective effects of the combination of guanosine and 2 organoselenium compounds (ebselen and diphenyl diselenide) against glutamate-induced oxidative stress in different regions of rat brains. Glutamate caused
Dalla Corte, Cristiane L., Félix A.A. Soares, João B.T. Rocha, Rocha, João B.T., Soares, Félix A.A., Luíza L. Bastos, Dobrachinski, Fernando, Cristiane L. Dalla Corte, Fernando Dobrachinski, Bastos, Luíza L.   +9 more
core   +1 more source

Ultrasound-promoted organocatalytic enamine–azide [3 + 2] cycloaddition reactions for the synthesis of ((arylselanyl)phenyl-1H-1,2,3-triazol-4-yl)ketones

Beilstein Journal of Organic Chemistry, 2017
The use of sonochemistry is described in the organocatalytic enamine–azide [3 + 2] cycloaddition between 1,3-diketones and aryl azidophenyl selenides. These sonochemically promoted reactions were found to be amenable to a range of 1,3-diketones or aryl ...
Gabriel P. Costa, Natália Seus, Juliano A. Roehrs, Raquel G. Jacob, Ricardo F. Schumacher, Thiago Barcellos, Rafael Luque, Diego Alves   +7 more
doaj   +1 more source

Crucial Role of Selenium in the Virucidal Activity of Benzisoselenazol-3(2H)-ones and Related Diselenides

Molecules, 2010
Various N-substituted benzisoselenazol-3(2H)-ones and their non-selenium-containing analogues have been synthesized and tested against selected viruses (HHV-1, EMCV and VSV) to determine the extent to which selenium plays a role in antiviral activity ...
Jacek Mlochowski, Magdalena Pietka-Ottlik, Piotr Potaczek, Egbert Piasecki   +3 more
doaj   +1 more source