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Listar por palabra clave "Gold catalysis"

Mostrando ítems 1-9 de 9

A residue-free production of biaryls using supported gold nanoparticles

Serna Merino, Pedro Manuel; Corma Canós, Avelino (Elsevier, 2014-06)

[EN] Small gold nanoparticles in the presence of O2 are able to cleave CAH bonds of non-activated arenes and facilitate catalytic formation of biaryls under mild conditions. This procedure avoids the common requirement ...
Cationic Gold Catalyzes Omega-Bromination of Terminal Alkynes and Subsequent Hydroaddition Reactions

Leyva Perez, Antonio; Rubio Marqués, Paula; AL-Dejab, Salem S.; Al-Resayes, Saud I.; Corma Canós, Avelino (American Chemical Society, 2011)

[EN] Orthogonal sigma,pi-bisfunctionalization of terminal alkynes can be achieved with a cationic gold complex in catalytic amounts. First, the terminal C-H bond is transformed to the corresponding bromoalkyne which is ...
Electrochemical monitoring of the oxidative coupling of alkynes catalyzed by triphenylphosphine gold complexes

Domenech Carbo, Antonio; Leyva Perez, Antonio; Al-Resayes, Saud I.; Corma Canós, Avelino (Elsevier, 2012-06)

Electrochemical monitoring of the oxidative coupling of alkynes in the homogeneous phase through catalytic cycles involving triphenylphosphine gold complexes and selectfluor as oxidant reveals that at least two gold species ...
Enhancement of the catalytic activity of supported gold nanoparticles for the fenton reaction by light

Navalón Oltra, Sergio; De Miguel de la Torre, Maykel; Martín González, Roberto; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (American Chemical Society, 2011)

[EN] Laser flash photolysis of supported gold nanopar-ticles exciting at the surface plasmon band (532 nm) has allowed in the case of Au/CeO 2 and Au/OH-npD (OH-npD: Fenton-treated diamond nanoparticles) detection of ...
Gold Redox Catalytic Cycles for the Oxidative Coupling of Alkynes

Leyva Perez, Antonio; Doménech, Antonio; Al-Resayes, Saud I.; Corma Canós, Avelino (American Chemical Society, 2011-12)

[EN] Au(I)/Au(III) catalytic cycles are catalytically competent to perform the oxidative coupling of alkynes in the homogeneous phase at room temperature and without any protecting atmosphere. Selectfluor as oxidant, wet ...
Influence of radical initiators in gold catalysis: Evidence supporting trapping of radicals derived from azobis(isobutyronitrile) by gold halides

Alvaro Rodríguez, Maria Mercedes; Aprile ., Carmela; Corma Canós, Avelino; Ferrer Ribera, Rosa Belén; García Gómez, Hermenegildo (Elsevier, 2006)

[EN] Gold halides (AuCl3, HAuCl4, and AuCl) efficiently trap the radicals generated in the room-temperature photolysis of azobis(isobutyronitrile) (AIBN) to give an organogold H[(CH3)(2)CCN](2)AuCl2 compound that has been ...
Reactivity of Electron-Deficient Alkynes on Gold Nanoparticles

Leyva Perez, Antonio; Oliver Meseguer, Judit; Cabrero Antonino, Jose Ramón; Rubio Marqués, Paula; Serna, Pedro; Al-Resayes, Saud I.; Corma Canós, Avelino (American Chemical Society, 2013-07)

[EN] Propiolates cyclotrimerize in the presence of catalytic amounts of gold nanoparticles to give aryl benzoates in high yields and with turnover frequencies of thousands per hour. Types of alkynes other than propiolates ...
Transforming Nano Metal Nonselective Particulates into Chemoselective Catalysts for Hydrogenation of Substituted Nitrobenzenes

Serna, Pedro; Corma Canós, Avelino (American Chemical Society, 2015-12)

The hydrogenation of nitro compounds is an industrial process that has experienced a renovated interest in the last 10 years due to the discovery of highly selective and environmentally friendly solid catalysts. Particularly, ...
Tuning the Microenvironment of Gold Nanoparticles Encapsulated within MIL-101(Cr) for the Selective Oxidation of Alcohols with O-2: Influence of the Amino Terephthalate Linker

Santiago-Portillo, Andrea; Cabrero-Antonino, Maria; Alvaro Rodríguez, Maria Mercedes; Navalón Oltra, Sergio; García Gómez, Hermenegildo (John Wiley & Sons, 2019-07-11)

[EN] This manuscript reports a comparative study of the catalytic performance of gold nanoparticles (NPs) encapsulated within MIL-101(Cr) with or without amino groups in the terephthalate linker. The purpose is to show how ...