Browsing QUIO_Articles by Title
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Chemoenzymatic synthesis of optically active 2-(2- or 4-substituted-1H-imidazol-1-yl)cycloalcanols. Chiral additives for (L)-proline
Royal Society of Chemistry (2013-04-03)Enantiopure substituted imidazoles obtained by enzymatic kinetic resolution can be promising candidates as co-catalysts for aldol reactions catalysed by (L)-proline. These additives seem to form supramolecular complexes ... -
Chiral bis(amino amides) as chiral solvating agents for enantiomeric excess determination of α-hydroxy and arylpropionic acids
Elsevier (2010)A family of bis(amino amides) derived from natural amino acids has been synthesized and tested for the NMR enantiodiscrimination, as chiral solvating agents, for enantiomeric excess determination of some carboxylic acids. ... -
Chiral Catalysts for the Enantioselective Carbon Dioxide-Based Cyclic Carbonates and Polycarbonates
MDPI (2023-11-14)Using carbon dioxide as a feedstock for synthesizing organic molecules with added value can contribute to a more sustainable chemical industry since CO2 is an abundant, inexpensive, and nontoxic renewable carbon resource. ... -
Chiral catalysts immobilized on achiral polymers: effect of the polymer support on the performance of the catalyst
Royal Society of Chemistry (2018)Positive effects of the polymeric support on the performance of supported chiral catalysts, in terms of activity, stability and selectivity–enantioselectivity, have been reported when the support is properly selected and ... -
Chiral imidazolium prolinate salts as efficient synzymatic organocatalysts for the asymmetric aldol reaction
MDPI (2021-07-09)Chiral imidazolium l-prolinate salts, providing a complex network of supramolecular interaction in a chiral environment, have been studied as synzymatic catalytic systems. They are demonstrated to be green and efficient ... -
Chiral Imidazolium Receptors for Citrate and Malate: The Importance of the Preorganization
American Chemical Society (2014-09)A family of simple receptors formed by two or three cationic imidazolium arms attached to a central aromatic linkage and displaying different conformational flexibility has been synthesized from the enantiopure ... -
Chiral palladacycles with N‑heterocyclic carbene ligands as catalysts for asymmetric hydrophosphination
American Chemical Society (2013)Design of chiral palladacycles with N-heterocyclic carbene (NHC) ligands has been carried out in good yields starting form commercially available enantiopure benzylamines. The methodology developed consists of the formation ... -
Chiral Room Temperature Ionic Liquids as Enantioselective Promoters for the Asymmetric Aldol Reaction
Wiley Online Library (2014)Chiral ionic liquids derived from natural amino acids are shown to be green and efficient media for direct asymmetric aldol reactions at room temperature catalyzed by (S)-proline. The corresponding aldol products were ... -
Chiral synthetic pseudopeptidic derivatives as triplet excited state quenchers
Elsevier (2009)The behavior of 6 pseudopeptidic models, synthesized by connecting different protected amino acids (Trp, Tyr, Phe, and Lys) with various diamino spacers, as quenchers of the triplet excited state of tiaprofenic acid (and ... -
Chiral Triazolium Salts and Ionic Liquids: From the Molecular Design Vectors to Their Physical Properties through Specific Supramolecular Interactions
Wiley-VCH (2012-11-29)An exhaustive experimental study based on X-ray diffraction analysis, NMR, FTIR-ATR (attenuated total reflection), and Raman spectroscopy as well as theoretical calculations is reported in order to understand how the ... -
CIGSS films prepared by sol-gel route
Elsevier (2009)Homogeneous layers of amorphous oxides of Cu-In, Cu-In-Ga were deposited by a sol-gel method. Selenization, sulfurization and sequential selenization + sulfurization treatments were performed with elemental S and Se, ... -
Clean enzymatic preparation of oxygenated biofuels from vegetable and waste cooking oils by using spongelike ionic liquids technology
American Chemical Society (2016)The biocatalytic synthesis of oxygenated biofuels (fatty acid solketal esters, FASEs) and biodiesel (fatty acid methyl esters, FAMEs) was carried out by both the direct esterification of fatty acids (i.e., lauric, ... -
Co-assembly of tetrapeptides into complex pH-responsive molecular hydrogel networks
Royal Society of Chemistry (2014-07)Here we prepare pH-responsive complex molecular hydrogels from oppositely charged tetrapeptidic components that can be pH-tuned resulting in interconversion between different networks. Two different systems are described ... -
Co2P2O7‐Ni2P2O7 solid solutions: Structural characterization and color
Wiley (2018-10)NH4[Co1−yNiyPO4]·H2O (0 ≤ y ≤ 1) single crystals were fired to prepare Co2−xNixP2O7 0 ≤ x ≤ 2 solid solutions between 800 and 1200°C. The structure of these solid solutions is α‐M2P2O7 (M = Co, Ni). The contraction of the ... -
Cobalt Minimisation in Violet Co3P2O8 Pigment
MDPI (2022-01-31)This study considers the limitations of cobalt violet orthophosphate, Co3P2O8, in the ceramic industry due to its large amount of cobalt. MgxCo3−xP2O8 (0 ≤ x ≤ 3) solid solutions with the stable Co3P2O8 structure were ... -
Combustion synthesis, structural and magnetic characterization of Ce1-xPrxO2 system
Springer (2017-07)The current work describes the synthesis of Ce1−xPrxO2 (x = 0.0, 0.2, 0.4, 0.6, 0.8) and Pr6O11 systems by the combustion method, using citric acid as chelating agent. The obtained solids after combustion and calcination ... -
Competition versus Cooperation in Catalytic Hydrogelators for anti-Selective Mannich Reaction
Wiley (2017-07-21)Chemical systems find similarities in different sociological and biological processes, in which the entities compete or cooperate for a favorable outcome. The structural and functional adaptations leading to emergent ... -
Concurso de cristalización en la escuela: una herramienta educativa innovadora
Infoedita (2023-09-01) -
Conductive films based on composite polymers containing ionic liquids absorbed on crosslinked polymeric ionic-like liquids (SILLPs)
Elsevier (2015)Polymerization of styrenic monomers containing imidazolium subunits in the presence of crosslinking monomers and using ionic liquids (ILs) as porogenic agents provides composite materials with excellent mechanical ... -
Conductivity and Polarization Processes in Highly Cross-Linked Supported Ionic Liquid-Like Phases
American Chemical Society (2010)Supported ionic liquid-like phases were prepared by anchoring imidazolium moieties onto highly cross-linked poly(p-chloromethylstyrene-co-divinylbenzene) monolithic matrixes. The influence of the chemical nature of the ...