[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 synthesis of alkyl halides can be performed by simply halide exchange reactions between two different alkyl halides, catalyzed by aluminosilicates. Here, we show that commercially available alumina shows a superior ...
[EN] 2,5-Dimethyl-2,4-hexadiene is a readily available and easily managable compound, whose symmetric and polymethylated dienic structure should be prone to engage in cross-metathesis reactions with other alkenes, but this ...
[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 ...
Hervàs-Arnandis, Susi; Palomar-De Lucas, Brenda; Bilanin-Artigado, Cristina; Mingueza-Verdejo, Paloma; Viciano, Mónica; Oliver-Meseguer, Judit; Leyva Perez, Antonio(The Royal Society of Chemistry, 2023-08-04)
[EN] Low-density (LD) and high-density polyethylene (HDPE), recycled or not, incorporates up to 7 wt% of ester groups after reacting either with ethyl diazoacetate (EDA) under catalytic and solvent free-reaction conditions, ...
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] The selective ortho-alkylation of 1-naphthol with methanol is carried out over various commercially available acid solid catalysts under relatively mild reaction conditions (<300 degrees C), in batch, and anhydrous ...
Rivero-Crespo, Miguel A.; Rubio Marqués, Paula; Hernández-Garrido, Juan Carlos; Mon-Conejero, Marta; Oliver-Meseguer, Judit; Leyva Perez, Antonio(The Royal Society of Chemistry, 2023-04-24)
[EN] The use of bimetallic nanoparticles as catalysts in complex organic synthesis is rare, despite the widespread use of these materials in thermal C-1 chemistry and electrocatalysis. Here we show that intimate RuPt ...
[EN] Extremely high electrophilic metal complexes, composed by a metal cation and very electron poor sigma-donor ancillary ligands, are expected to be privileged catalysts for oxidation reactions in organic chemistry. ...
[EN] The combination of well-defined Fe3+ isolated single-metal atoms and Ag2 subnanometer metal clusters within the channels of a metal¿organic framework (MOF) is reported and characterized by single-crystal X-ray diffraction ...
[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 ...