[EN] The engagement in tandem of well-known organic reactions such as the Pd-catalyzed Sonogashira cross-coupling reaction, nucleophilic substitution and elimination reactions, enables the synthesis of otherwise difficult ...
[EN] The assumption that oxidative addition is the key step during the cross-coupling reaction of aryl halides has led to the development of a plethora of increasingly complex metal catalysts, thereby obviating in many ...
Oliver Meseguer, Judit(Universitat Politècnica de València, 2015-03-31)
En la presente tesis doctoral se ha realizado un estudio sobre las
especies catalíticamente activas en reacciones de formación de enlace
carbono-carbono y carbono-heteroátomo catalizadas por oro, paladio y
cobre.
En ...
Greco, Rossella; García-Laínez, Guillermo; Oliver-Meseguer, Judit; Marini, Carlo; Domínguez, Irene; Lopez-Haro, Miguel; Hernandez-Garrido, Juan Carlos; Cerón-Carrasco, José Pedro; Andreu, Inmaculada; Leyva Perez, Antonio(Royal Society of Chemistry, 2022-12-06)
[EN] Ligand-free sub-nanometer metal clusters (MCs) of Pt, Ir, Rh, Au and Cu, are prepared here in neat water and used as extremely active (nM) antitumoral agents for HeLa and A2870 cells. The preparation just consists of ...
Negro, Cristina; Bilanin-Artigado, Cristina; Qu, Xiaoni; Oliver-Meseguer, Judit; Ferrando-Soria, Jesus; Leyva Perez, Antonio; Armentano, Donatella; Pardo, Emilio(The Royal Society of Chemistry, 2022-05-05)
[EN] Allylic alcohol epoxidation and dehydrogenation reactivity is distinguished when VO(acac)(2) is used in solution or anchored in a metal-organic framework (MOF). The chemical mechanism depends on the electronic profile ...
Martínez Castelló, Aarón(Universitat Politècnica de València, 2023-01-20)
[ES] En la presente tesis doctoral el principal objetivo ha sido desarrollar una nueva metodología para producir monoésteres, diésteres y polioles derivados de ácidos grasos de forma continua. Una producción en continuo ...
Oliver Meseguer, Judit; Leyva Perez, Antonio; Al-Resayes, Saud I.; Corma Canós, Avelino(Royal Society of Chemistry, 2013-09-14)
Gold complexes and salts decompose to catalytically active 3¿5 atom gold clusters during the one-pot acylation¿hydration of propargyl alcohols. Kinetic and spectroscopic studies show that released ligands and counteranions ...
Oliver-Meseguer, Judit; Boronat Zaragoza, Mercedes; Vidal Moya, José Alejandro; Concepción Heydorn, Patricia; Rivero-Crespo, Miguel Ángel; Leyva Perez, Antonio; Corma Canós, Avelino(American Chemical Society, 2018-03-07)
[EN] The reactive nature of carbenes can be modulated, and ultimately reversed, by receiving additional electron density from a metal. Here, it is shown that Au nanoparticles (NPs) generate an electron-rich carbene on ...
[EN] Glycols and ethoxy- and propoxy-alcohols are fundamental chemicals in industry, with annual productions of millions of tons, still manufactured in many cases with corrosive and unrecoverable catalysts such as KOH, ...
Boronat Zaragoza, Mercedes; Laursen, Siris Odin; Leyva Perez, Antonio; Oliver Meseguer, Judit; Cómbita Merchán, Diego Fernando; Corma Canós, Avelino(Elsevier, 2014-06)
The mechanism of alkyne homocoupling over gold nanoparticles and clusters, isolated and supported on
CeO2, has been theoretically investigated by means of periodic DFT calculations. The theoretical study
indicates that ...
Hervàs Arnandis, Susi(Universitat Politècnica de València, 2022-10-02)
[ES] Funcionalización directa del polietileno con ésteres de diferentes longitudes y formas, adición de carbenos y posterior transesterificación, para el estudio de sus diferentes estabilidades hidrolíticas.
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 ...
[EN] The palladium-catalysed cross-coupling reaction between alkenes and aryl halides (the Mizoroki-Heck reaction) is a powerful methodology to construct new carbon-carbon bonds. However, the success of this reaction is ...
Oliver Meseguer, Judit; Cabrero Antonino, Jose Ramón; Domínguez Pérez, Irene; Leyva Perez, Antonio; Corma Canós, Avelino(American Association for the Advancement of Science, 2012-12-14)
[EN] Very small gold clusters (3 to 10 atoms) formed from conventional gold salts and complexes can catalyze various organic reactions at room temperature, even when present at concentrations of parts per billion. Absorption ...
[EN] The esterification reaction of long-chain acids and alcohols is carried out in both academia and industry with soluble strong acids such as phosphoric or methanesulfonic acid, since the lower diffusion and higher ...
[EN] Metal single-atom catalysts (SACs) promise great rewards in terms of metal atom efficiency. However, the requirement of particular conditions and supports for their synthesis, together with the need of solvents and ...
[EN] Sub-nanometric Cu clusters formed by endogenous
reduction of Cu salts and Cu nanoparticles are active
and selective catalysts for C−N, C−C, C−O, C−S, and C−P
bond-forming reactions. Sub-nanometric Cu clusters ...
Cunat, Ana C.; Flores, Sonia Edith; Oliver Meseguer, Judit; Fustero Lardies, Santos(Wiley-VCH Verlag, 2011-12)
[EN] An efficient method for the synthesis of fluorinated and non-fluorinated imidazoazepines by a ring-closing metathesis reaction as the key step is described. The influence of the fluorine atoms on the preparation of ...
Small gold clusters containing 3-6 atoms (submolar) catalyze different carbon-carbon and carbon-heteroatom bond-forming reactions. They can be formed in situ from gold salts, complexes and nanoparticles under acidic ...
Auf kleinstem Nenner: Palladiumcluster mit drei oder vier Atomen erwiesen sich als katalytisch aktive Spezies in ligandenfreien palladiumkatalysierten C-C-Kupplungen (siehe Bild). Die Cluster konnten in Wasser stabilisiert ...