C
Claudio C. Silveira
Researcher at Universidade Federal de Santa Maria
Publications - 239
Citations - 3432
Claudio C. Silveira is an academic researcher from Universidade Federal de Santa Maria. The author has contributed to research in topics: Catalysis & Coupling reaction. The author has an hindex of 30, co-authored 238 publications receiving 3173 citations. Previous affiliations of Claudio C. Silveira include University of Göttingen.
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A Solvent- and Metal-Free Synthesis of 3-Chacogenyl-indoles Employing DMSO/I2 as an Eco-friendly Catalytic Oxidation System
TL;DR: A solvent- and metal-free method for the synthesis of 3-chalcogenyl-indoles from indoles and diorganyl dichalcogenides using an equivalent amount of DMSO as an oxidant, under catalysis by molecular iodine is described.
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"Green chemistry": os 12 princípios da química verde e sua inserção nas atividades de ensino e pesquisa
Eder J. Lenardão,Rogério Antonio Freitag,Miguel J. Dabdoub,Antonio Carlos Ferreira Batista,Claudio C. Silveira +4 more
TL;DR: Green chemistry is defined as the design, development, and application of chemical processes and products to reduce or eliminate the use and generation of substances hazardous to human health and the environment as discussed by the authors.
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Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydes.
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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Stereoselective synthesis of enynes by nickel-catalyzed cross-coupling of divinylic chalcogenides with alkynes.
TL;DR: (Z,Z)- and (E,E)-divinylic selenides and telurides undergo direct coupling with terminal alkynes in the presence of a nickel/CuI catalyst at room temperature to give (Z)-and (E)-enyne systems in good yields and with complete retention of configuration.
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The use of anhydrous CeCl3 as a catalyst for the synthesis of 3-sulfenyl indoles
TL;DR: Anhydrous CeCl3 was successfully used as a catalyst for the synthesis of several 3-sulfenyl indoles in good to excellent yields through the reaction of indole with N-(alkylthio) and N-(arylthio)-phthalimides in DMF as discussed by the authors.