Oscar E. D. Rodrigues

Journal ArticleDOI

An efficient one-pot synthesis of symmetrical diselenides or ditellurides from halides with CuO nanopowder/Se0 or Te0/base.

- 29 Jun 2010 -

TL;DR: A CuO nanopowder-catalyzed coupling reaction of aryl, alkyl, and heteroaryl iodides with elemental selenium and tellurium takes place in the presence of KOH at 90 degrees C in DMSO with good to excellent yields.

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Journal ArticleDOI

Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydes.

Antonio L. Braga, +4 more

- 24 Jun 2003 -

Organic Letters

TL;DR: A set of chiral aliphatic amino diselenides have been synthesized from readily available starting materials in a straightforward synthetic route via the ring-opening reaction of the parent aziridines, and the influence of the alkyl group substituents on the stereoselectivity has been studied.

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Journal ArticleDOI

Renal and hepatic ALA-D activity and selected oxidative stress parameters of rats exposed to inorganic mercury and organoselenium compounds.

Juliano Perottoni, +7 more

- 01 Jan 2004 -

Food and Chemical Toxicology

TL;DR: Results suggest that organoselenium compounds could not prevent mercury toxicity in vivo, and the protective effect of these compounds against mercury-induced increase of TBARS production in vitro is probably related to an antioxidant action rather than to mercury binding.

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Journal ArticleDOI

New Organochalcogen Multitarget Drug: Synthesis and Antioxidant and Antitumoral Activities of Chalcogenozidovudine Derivatives

Diego de Souza, +13 more

- 08 Apr 2015 -

Journal of Medicinal Chemistry

TL;DR: A prominent response was obtained for the selected chalcogenonucleosides, showing effective antioxidant and antitumoral activities.

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Journal ArticleDOI

CuO nanoparticles: an efficient and recyclable catalyst for cross-coupling reactions of organic diselenides with aryl boronic acids

Diego Alves, +6 more

- 02 Dec 2009 -

Tetrahedron Letters

TL;DR: In this article, an efficient and ligand-free cross-coupling reaction of organic diselenides with aryl boronic acids using a catalytic amount of CuO nanoparticles in DMSO at 100°C under air atmosphere was presented.

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Papers

An efficient one-pot synthesis of symmetrical diselenides or ditellurides from halides with CuO nanopowder/Se0 or Te0/base.

Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydes.

Renal and hepatic ALA-D activity and selected oxidative stress parameters of rats exposed to inorganic mercury and organoselenium compounds.

New Organochalcogen Multitarget Drug: Synthesis and Antioxidant and Antitumoral Activities of Chalcogenozidovudine Derivatives

CuO nanoparticles: an efficient and recyclable catalyst for cross-coupling reactions of organic diselenides with aryl boronic acids