Listar por tema "Catalysis"
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A Simple Route to Chelating, Structurally Different Triazole-Based Bis(N-heterocyclic carbene) Ligands and Their Coordination to PtIl
Wiley (2011-01)Two new bis(triazolium) salts have been prepared and used as N-heterocyclic carbene (NHC) precursors. The structure of the salts is highly dependent on the synthetic route, which implies the sequential alkylation of two ... -
Catalytic Hydrodefluorination with Late Transition Metal Complexes
ACS Publications (2014-08-07)This perspective article focuses its attention on the most recent advances in hydrodefluorination processes catalyzed by late transition metal complexes, a field that has been a matter of increasing interest during the ... -
Design of catalytic systems for sustainable processes development: hydrogen storage and biomass transformation
Universitat Jaume I (2023-02-17)The present PhD. Thesis is the result of research efforts directed towards the design and development of more sustainable catalytic processes trying to address some of the current challenges that today our society is facing ... -
Design of polytopic ligands for the preparation of multifunctional catalysts
Universitat Jaume I (2015-03-06)<p>En esta Tesis Doctoral se han sintetizado tres nuevos ligandos politópicos basados en carbenos N-heterocíclicos (NHCs en sus siglas en inglés) con diferentes tipos de arquitecturas.</p> <p>En primer lugar se ha obtenido ... -
Experimental and Theoretical Approaches to the Influence of the Addition of Pyrene to a Series of Pd and Ni NHC-Based Complexes: Catalytic Consequences
Wiley (2014-11-20)A series of Ni and Pd complexes with three different N-heterocyclic carbene (NHC)-based ligands (imidazolylidene, benzimidazolylidene and pyrene–imidazolylidene) has been prepared and fully characterized. The influence of ... -
Ferrocenyl-Imidazolylidene Ligand for Redox-Switchable Gold-Based Catalysis. A Detailed Study on the Redox-Switching Abilities of the Ligand
American Chemical Society (2016)An imidazolium salt with a fused benzoferrocenyl was synthesized. This compound was used as an N-heterocyclic carbene (NHC) precursor, and the related ferrocenyl-imidazolylidene complexes Fc-NHC-MLn (MLn = IrCl(COD), ... -
Insight into the esterase like activity demonstrated by an imidazole appended self-assembling hydrogelator
Royal Society of Chemistry (2016)A low molecular weight hydrogelator with a covalently appended imidazole moiety is reported. Capable of percolating water in the pH range of 6 to 8, it proves to be an efficient catalyst upon self-assembly, showing ... -
Linking Electrostatic Effects and Protein Motions in Enzymatic Catalysis. A Theoretical Analysis of Catechol O-Methyltransferase
American Chemical Society (2015-08)The role of protein motions in enzymatic catalysis is the subject of a hot scientific debate. We here propose the use of an explicit solvent coordinate to analyze the impact of environmental motions during the reaction ... -
Molecular recognition in Mn-catalyzed C–H oxidation. Reaction mechanism and origin of selectivity from a DFT perspective
Royal Society of Chemistry (2009)Experimental studies have shown that the C–H oxidation of Ibuprofen and methylcyclohexane acetic acid can be carried out with high selectivities using [(terpy’)Mn(OH2)(μ-O)2Mn(OH2)(terpy’)]3+ as catalyst, where terpy’ is ... -
Nuevas metodologías sostenibles para la síntesis de aminas quirales
Universitat Jaume I (2016-12-19)Esta Tesis Doctoral se centra en el diseño y síntesis de organocatalizadores sencillos basados en aminoácidos. Tras su síntesis, se evalúan en la reducción enantioselectiva de cetiminas con triclorosilano, donde se destacan ... -
Pd catalysts immobilized onto gel-supported ionic liquid-like phases (g-SILLPs): A remarkable effect of the nature of the support
Elsevier (2010)New polymeric materials containing functional sites analogous to ionic liquids have been synthesized. Those materials are a supported reservoir for the active Pd species. Their catalytic activity has been evaluated for the ... -
Plasmonic versus catalytic effect of gold nanoparticles on mesoporous TiO2 electrodes for water splitting
Elsevier (2014-10)Solar water splitting with metal oxide semiconductors constitutes a promising approach to the conversion of solar energy into chemical energy stored in the atomic bonds of hydrogen molecules. In the present study, we ... -
Poly-N-Heterocyclic Carbene Ligands with Polyaromatic Linkers. Self-Assembly and Host-Guest Chemistry
Universitat Jaume I (2017-06-16)In summary, a series of polytopic ligands based on NHC and MIC ligands have been synthesized in this Doctoral Thesis by means of different synthetic routes that gave rise to systems with very sophisticated architectures. ... -
Polymer-supported ionic-liquid-like phases (SILLPs): transferring ionic liquid properties to polymeric matrices
Wiley (2011-01-12)The physico-chemical properties of polymers with ionic-liquid-like moieties covalently bound to their surfaces (SILLPs) have been studied by thermal and spectroscopic techniques, as well as by direct impedance and dielectric ... -
Recent developments in the applications of palladium complexes bearing N-heterocyclic carbene ligands
Bentham Science Publishers (2011-01-09)N-heterocyclic carbene (NHC) ligands have become ubiquitous ligands in the preparation of metal complexes with new catalytic applications. Mainly due to their applications in C-C bond formation reactions, a plethora of ... -
Role of Solvent on Nonenzymatic Peptide Bond Formation Mechanisms and Kinetic Isotope Effects
American Chemical Society (2013)Based on the hypothesis that similar mechanisms are involved in the peptide bond formation in aqueous solution and in the ribosome, the aminolysis of esters in aqueous solution has been the subject of numerous studies as ... -
Supercritical Synthesis of Biodiesel
MDPI Publishing (2012)The synthesis of biodiesel fuel from lipids (vegetable oils and animal fats) has gained in importance as a possible source of renewable non-fossil energy in an attempt to reduce our dependence on petroleum-based fuels. The ... -
Supramolecular Interactions Based on Ionic Liquids for Tuning of the Catalytic Efficiency of (L)-Proline
American Chemical Society (2016-09)Noncovalent intermolecular interactions between (l)-proline and ionic liquids (ILs) are key to explain the different catalytic efficiencies observed for this organocatalyst in the aldol reaction carried out in ILs or in ... -
Supramolecular metallogels for application in catalysis
Universitat Jaume I (2016-06-21)La tesis describe el diseño y la síntesis de geles moleculares funcionalizados con fragmentos catalíticos de feniltriazol (PhTzValn), benciltriazol (BzTzAValn) y azidocoumarinatriazol (RAzTzValn) y su aplicación como ... -
Synthesis of nitriles by catalytic dehydrogenation of amines using ruthenium complexes
Universitat Jaume I (2014)Nitriles represent one of the most important classes of organic compounds used as intermediates in the synthesis of biologically active compounds and pharmaceutical substances. Furthermore, they are also used in ...