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Listar por autor "Leyva Perez, Antonio"

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A bifunctional palladium-acid solid catalyst performs the direct synthesis of cyclohexylanilines and dicyclohexylamines from nitrobenzenes

Rubio Marqués, Paula; Leyva Perez, Antonio; Corma Canós, Avelino (Royal Society of Chemistry, 2013)

[EN] Nitroderivatives are transformed to cyclohexylanilines at room temperature in good yields and selectivity via a hydrogenation-amine coupling cascade reaction using Pd nanoparticles on carbon as a catalyst and a Bronsted acid.
A Cascade Sonogashira Cross-Coupling-Substitution-Elimination Reaction for the Synthesis of Linear Conjugated Dienynes

Lumbreras-Teijeiro, Alejandro; Bacic, Matea; Oliver-Meseguer, Judit; Leyva Perez, Antonio (John Wiley & Sons, 2022-12-20)

[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 ...
A Ligand-Free Pt3 Cluster Catalyzes the Markovnikov Hydrosilylation of Alkynes with up to 106 Turnover Frequencies

Rivero-Crespo, Miguel Ángel; Leyva Perez, Antonio; Corma Canós, Avelino (John Wiley & Sons, 2017)

[EN] The Pt-catalyzed hydrosilylation of alkynes is the procedure of choice to obtain vinylsilanes, and is claimed to be the most relevant application of Pt in organic synthesis. More than half a century after its discovery, ...
Acid and Base Water Coexists in a Micro-Structured Ionic Liquid and Catalyzes Organic Reactions in One-Pot

Leyva Perez, Antonio; Bilanin-Artigado, Cristina; Bacic, Matea; Greco, Rossella (John Wiley & Sons, 2022-10-10)

[EN] The most paradigmatic example of antagonist chemical species are protons and hydroxyls, and their coexistence in a liquid system is of high interest. Here we show that commercial ionic liquids stabilize microdroplets ...
Acid Catalysis with Alkane/Water Microdroplets in Ionic Liquids

Greco, Rossella; Lloret, Vicent; Rivero Crespo, Miguel Ángel; Hirsch, Andreas; Doménech-Carbó, Antonio; Abellán Sáez, Gonzalo; Leyva Perez, Antonio (American Chemical Society, 2021-06-28)

[EN] Ionic liquids are composed of an organic cation and a highly delocalized perfluorinated anion, which remain tight to each other and neutral across the extended liquid framework. Here we show that n-alkanes in millimolar ...
Additive-Free Commercial Alumina Catalyzes the Halogen Exchange Reaction of Long Alkyl Halides in Batch and in Flow Processes

Mingueza-Verdejo, Paloma; Hervàs-Arnandis, Susi; Oliver-Meseguer, Judit; Leyva Perez, Antonio (American Chemical Society, 2024-08)

[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 ...
Ag2(0) dimers within a thioether-functionalized MOF catalyze the CO2 to CH4 hydrogenation reaction

Zheng, Yongkun; Martín, Nuria; Boronat Zaragoza, Mercedes; Ferrando-Soria, Jesus; Mon-Conejero, Marta; Armentano, Donatella; Pardo, Emilio; Leyva Perez, Antonio (Nature Publishing Group, 2023-06-27)

[EN] Ultrasmall silver clusters in reduced state are difficult to synthesize since silver atoms tend to rapidly aggregate into bigger entities. Here, we show that dimers of reduced silver (Ag-2) are formed within the ...
Alkene Cross-Metathesis with 2,5-Dimethyl-2,4-Hexadiene Enables Isobutylenyl/Prenyl Functionalizations and Rubber Valorization

Mingueza-Verdejo, Paloma; Rodríguez-Nuévalos, Silvia; Oliver-Meseguer, Judit; Leyva Perez, Antonio (John Wiley & Sons, 2024-07-02)

[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 ...
Au Clusters Catalyze The Disulfide Metathesis Reaction By A Reductive Addition-Oxidative Elimination Mechanism

Lerma-Berlanga, Belén; Orlando, Francesco; Merino, Estibaliz; Leyva Perez, Antonio (John Wiley & Sons, 2024-09)

[EN] A plethora of industrial and academic organic chemical reactions are catalyzed by the well-known oxidative addition-reductive elimination (OARE) mechanism. However, the micro-reversed counterpart, i. e. the reductive ...
Base-Controlled Heck, Suzuki, and Sonogashira Reactions Catalyzed by Ligand-Free Platinum or Palladium Single Atom and Sub-Nanometer Clusters

Fernández, Estefanía; Rivero-Crespo, Miguel Á.; Domínguez, Irene; Rubio-Marqués, Paula; Oliver-Meseguer, Judit; Liu, Lichen; Cabrero-Antonino, Maria; GAVARA CLEMENTE, RAFAEL; Hernández-Garrido, Juan C.; Boronat Zaragoza, Mercedes; Leyva Perez, Antonio; Corma Canós, Avelino (American Chemical Society, 2019-02-06)

[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 ...
Basic zeolites containing palladium as bifunctional heterogeneous catalysts for the Heck reaction

Corma Canós, Avelino; García Gómez, Hermenegildo; Leyva Perez, Antonio; Primo Arnau, Ana Maria (Elsevier, 2003)

[EN] K+ and Cs+ exchanged X zeolite containing PdCl2 catalyzes the Heck reaction of PhI or PhBr with styrene in toluene or polymethylbenzenes without the need of extrinsic base. The reaction is truly heterogeneous and no ...
Beyond Acid Strength in Zeolites: Soft Framework Counteranions for Stabilization of Carbocations on Zeolites and Its Implication in Organic Synthesis

Cabrero Antonino, Jose Ramón; Leyva Perez, Antonio; Corma Canós, Avelino (Wiley, 2015-05-04)

[EN] The generation of a carbocation with an acid depends not only on the acid strength but also on the ability of the counteranion to stabilize the positive charge left behind. Here we report that despite their relatively ...
Bimetallic nanosized solids with acid and redox properties for catalytic activation of C-C and C-H bonds

Cabrero Antonino, Jose Ramón; Tejeda-Serrano, Maria; Quesada Vilar, Manuel; Vidal Moya, José Alejandro; Leyva Perez, Antonio; Corma Canós, Avelino (Royal Society of Chemistry, 2017)

A new approach is presented to form self-supported bimetallic nanosized solids with acid and redox catalytic properties. They are water-, air- and H-2-stable, and are able to activate demanding C-C and C-H reactions. A ...
Carbene reactions catalyzed by silver-supported or metal-free microporous solids

Zheng, Yongkun (Universitat Politècnica de València, 2024-09-02)

[ES] Los carbenos representan una clase de reactivos altamente potentes utilizados en el campo de la síntesis orgánica, que muestran la capacidad de participar eficazmente durante los procesos de inserción en una amplia ...
Catalizadores sólidos como alternativa a compuestos de hierro en disolución para reacciones orgánicas de interés industrial

Tejeda Serrano, María (Universitat Politècnica de València, 2019-09-02)

[ES] En la presente tesis doctoral se ha llevado a cabo la búsqueda de catalizadores heterogéneos para sustituir catalizadores homogéneos de Fe en reacciones químicas de interés industrial y/o sintético. En primer lugar, ...
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 ...
Cianosililación de cetonas catalizada por óxido de cerio. Estudio mecanístico

Rivero Crespo, Miguel Ángel (Universitat Politècnica de València, 2015-09-18)

[EN] Cyanosilylation of carbonylic compounds has a great interest in organic chemistry. In the present work ketones cyanosilylation is performed catalyzed by cerium oxide in mild conditions. A kinetic study was carried ...
Click amidations, esterifications and one¿pot reactions catalyzed by Cu salts and multimetal-organic frameworks (M-MOFs)

Greco, Rossella; Tiburcio, Estefanía; Palomar-De Lucas, Brenda; Ferrando-Soria, Jesús; Armentano, Donatella; Pardo, Emilio; Leyva Perez, Antonio (Elsevier, 2022-04)

[EN] Amides and esters are prevalent chemicals in Nature, industry and academic laboratories. Thus, it is not surprising that a plethora of synthetic methods for these compounds has been developed along the years. However, ...
Clusters and single atoms of Pd and Pt: Synthesis and applications in catalysis and as antitumoral agents

Greco, Rossella (Universitat Politècnica de València, 2021-09-02)

[ES] En esta tesis se han estudiado la síntesis y aplicación de clústeres y átomos metálicos aislados de Pd y Pt. Clústeres y átomos aislados han sido sintetizados siguiendo nuevas metodologías en disolución, sin utilizar ...
CLÚSTERES MOLECULARES DE ORO, PALADIO Y COBRE COMO CATALIZADORES DE REACCIONES ORGÁNICAS

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 ...