Listar QUIO_Articles por fecha de publicación
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Eu3+ @Organo-Si(HIPE) Macro-Mesocellular Hybrid Foams Generation: Syntheses, Characterizations, and Photonic Properties
American Chemical Society (2008)The elaboration of organosilica-based hybrid monoliths exhibiting a hierarchically structured bimodal porous structure with chelating functionality have been synthesized under interplay between high internal phase emulsion ... -
Structural and Spectroscopy Study of a Novel Erbium Titanate Pink Pigment Prepared by Sol-gel Methodology
American Chemical Society (2008)Pyrochlore oxides show a large variety of physical and chemical properties depending on the ordering/disordering of the cations and oxygen vacancies. Taking account of these structural features and the luminescent properties ... -
Base Supported Ionic Liquid-Like Phases as catalysts for the Batch and Continuous-Flow Henry Reaction
Royal Society of Chemistry (2008)New solid basic catalysts immobilised onto supported ionic liquid-like phases have been prepared, having suitable mechanical stability for their use for the continuous-flow Henry reaction -
Brown ceramic pigments based on chromium(III)-doped titanite obtained by spray pyrolysis
Elsevier (2008)Cr-doped titanite (CaTiSiO5) pigments were synthesized through spray pyrolysis of aerosols generated from aqueous solutions containing colloidal silica, calcium chloride, titanium(IV) oxychloride and chromium(III) nitrate. ... -
Sol-gel synthesis of tunable cerium titanate materials
ChemPubSoc Europe (2008)Cerium titanate structures present a high technological interest because of their optical and catalytic properties. This work reports the synthesis of these materials by a sol-gel methodology which allows to obtain mixed ... -
Aldol Reactions between L-Erythrulose Derivatives and Chiral α-Amino and α -Fluoro Aldehydes: Competition between Felkin–Anh and Cornforth Transition States
Wiley-Blackwell (2008)Both matched and mismatched diastereoselection have been observed in aldol reactions of a boron enolate of a protected l-erythrulose derivative with several chiral α-fluoro and α-Amino aldehydes. Strict adherence to the ... -
Biomimetic self-assembly of tetrapeptides into fibrillar networks and organogels
WILEY-VCH (2008)The self-assembly features of a family of tetrapeptides inspired in silk structure are presented. An exhaustive study of the influence of the terminal alkyl chain length in this process is undertaken. Scanning electron ... -
Designed folding of pseudopeptides: the transformation of a configurationally driven preorganization into a stereoselective multicomponent macrocyclization
VCH Verlagsgesellschaf (2008)The efficient synthesis of large-ring pseudopeptidic macrocycles through a multicomponent [2+2] reductive amination reaction is described. The reaction was entirely governed by the structural information contained in the ... -
Development of blue ceramic dyes from cobalt phosphates
Elsevier (2008)In this study the development of blue ceramic dyes from compositions based on phosphate structures have been investigated. The replacement of cobalt by copper or iron to minimize the Co content have been considered. ... -
Synthesis of black ceramic pigments from secondary raw materials
Elsevier (2008)Black ceramic pigments were prepared from industrial wastes as raw materials, namely, Cr/Ni-rich sludge generated from Cr/Ni plating and Fe-rich galvanizing sludge generated during steel wiredrawing. The pigment was based ... -
High-Tech Applications of Self-Assembling Supramolecular Nanostructured Gel-Phase Materials: From Regenerative Medicine to Electronic Devices
John Wiley & Sons (2008)It is likely that nanofabrication will underpin many technologies in the 21st century. Synthetic chemistry is a powerful approach to generate molecular structures that are capable of assembling into functional nanoscale ... -
Short, Stereoselective Synthesis of the Naturally Occurring Pyrrolidine Radicamine B and a Formal Synthesis of Nectrisine
American Chemical Society (2008)A short, stereoselective synthesis of the naturally occurring pyrrolidine radicamine B is reported. Garner′s (R)-aldehyde, prepared from d-serine, was the chiral starting material. The pyrrolidine ring was stereoselectively ... -
Polymorphism and Dielectric Properties of Nb-Doped BaTiO3
Wiley (2008-01)A working subsolidus phase diagram for the system BaTiO3–Ba5Nb4O15 has been determined by firing sol–gel-synthesized samples over a range of temperatures. The main difference from previous diagrams is the greater extent ... -
An Unusual Example of Base-Free Catalyzed Reduction of C═O and C═NR Bonds by Transfer Hydrogenation and Some Useful Implications
American Chemical Society (2008-03)A series of Cp*IrIII(NHC) complexes have been used in the catalytic transfer hydrogenation of ketones and imines in iPrOH, showing that the reduction of ketones is complete within minutes at room temperature, with the ... -
Polymorphism of BaTiO3 Acceptor Doped with Mn3+, Fe3+, and Ti3+
Wiley (2008-07)The effect of Mn doping on the cubic to hexagonal phase transition temperature in BaTiO3 has been determined by quenching samples with different Mn contents from a range of temperatures. Under conditions of equilibrating ... -
Stereoselective synthesis of the naturally occurring 2-pyranone dodoneine
Wiley-VCH (2008-08)The first total synthesis of the naturally occurring dihydropyranone dodoneine is reported. Asymmetric allylations were used for the stereoselective generation of the two stereogenic centers. The pyranone ring was created ... -
Cp*Ir(NHC) complexes as highly versatile and efficient catalysts for the cross-coupling of alcohols and amines
Wiley-VCH (2008-11-19)A comparative study on the catalytic activity of a series of Cp*Ir(NHC)Cl2 complexes in several C-O and C-N coupling processes implying hydrogen-borrowing mechanisms has been performed. The compound Cp*Ir(InBu)Cl2 (InBu ... -
Synthesis of new chiral imidazolium salts derived from amino acids: their evaluation in chiral molecular recognition
Elsevier (2009)A family of new imidazolium salts derived from natural amino acids has been synthesized and tested for NMR enantiodiscrimination, as chiral shift reagents, of carboxylic acids. These imidazolium receptors contain different ... -
Amidation through carbamates
Elsevier (2009)N-Alkyl carbamates of primary amines are easily converted into amides under treatment with Grignard reagents. Consequently, primary amines can be converted into amides in a one-pot reaction through carbamate protection and ... -
Cu2ZnSnS4 films deposited by a soft-chemistry method
Elsevier (2009)Cu2ZnSnS4 films were deposited on glass substrates by the use of a printing technique. A series of different precursor materials was synthesized by a soft-chemistry route. Suspensions were prepared with or without the ...