Listar QUIO_Articles por autoría "eb337365-e695-4ade-91a6-9e4a5dd95d52"
Mostrando ítems 1-15 de 15
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AuNP−polymeric ionic liquid composite multicatalytic nanoreactors for one-pot cascade reactions
Montolio Breva, Silvia; Vicent Barrera, Cristian; Aseyev, Vladimir; Alfonso Rodríguez, Ignacio; Burguete, M. Isabel; Tenhu, Heikki; Garcia-Verdugo, Eduardo; Luis, Santiago V. American Chemical Society (2016)Different AuNP-PIL nanocomposites have been developed as bifunctional catalysts in which the IL-like units promote the Knoevenagel condensation through a dual electrophilic/nucleophilic activation relay mechanism and ... -
Bis (imidazolium) salts derived from amino acids as receptors and transport agents for chloride anions
González, Laura; Altava, Belen; Burguete, M. Isabel; Escorihuela, Jorge; Hernando, Elsa; Luis, Santiago V.; Quesada, Roberto; Vicent Barrera, Cristian Royal Society of Chemistry (2015-04)The binding properties of bis(imidazolium) hosts 1a–c derived from amino acids towards different anions have been studied by 1H NMR titration experiments in 95[thin space (1/6-em)]:[thin space (1/6-em)]05 CD3CN[thin space ... -
Bis(amino amides) derived from natural amino acids as chiral receptors for N-protected dicarboxylic amino acids
Altava, Belen; Burguete, M. Isabel; Carbó Mestre, Noèlia; Luis, Santiago V.; Martí-Centelles, Vicente; Vicent Barrera, Cristian Elsevier (2013-01)A family of bis(amino amides) derived from natural amino acids has been synthesized and tested for the NMR enantiodiscrimination, as chiral receptors, of some N-protected dicarboxylic amino acids. The influence of the amino ... -
Influence of the gas atmosphere on the deprotection of (Z)-γ -hydroxy- α , β-unsaturated esters
López Martín, Irakusne; Rodríguez, Santiago; Izquierdo Ferrer, Javier; González, Florenci; Vicent Barrera, Cristian Bentham Science Publishers (2009)The deprotection of O-protected (Z)-α-methyl-γ-hydroxy-α,β-unsaturated ester 1 furnishes dimer 2 when the reaction is performed under a nitrogen atmosphere, while compound 3 forms when the reaction is performed under an ... -
Ion Mobility Mass Spectrometry Uncovers Guest-Induced Distortions in a Supramolecular Organometallic Metallosquare
Vicent Barrera, Cristian; Martínez Agramunt, Víctor; Gandhi, Viraj; Larriba, Carlos; Gusev, Dmitry; Peris, Eduardo Wiley (2021)The encapsulation of the tetracationic palladiummetallosquare with four pyrene-bis-imidazolylidene ligands[1]4+with aseries of organic molecules was studied byElectrosprayionization Travelling Wave Ion-Mobility MassSpectrometry ... -
Molecular recognition of N-protected dipeptides by pseudopeptidic macrocycles: a comparative study of the supramolecular complexes by ESI-MS and NMR
Alfonso Rodríguez, Ignacio; Bolte, Michael; Burguete, M. Isabel; Bru Roig, Miriam; Luis, Santiago V.; Vicent Barrera, Cristian Royal Society of Chemistry (2010)The molecular recognition properties of pseudopeptidic macrocycles have been studied by ESI-MS and NMR spectroscopy, as highly complementary experimental techniques in solution and in the gas phase. We used ESI-MS competition ... -
New insights on organosilane oligomerization mechanisms using ESI-MS and 29Si NMR
Planelles Aragó, José; Vicent Barrera, Cristian; Julian-Lopez, Beatriz; Cordoncillo, Eloisa; Escribano López, Purificación Royal Society of Chemistry (2009)The use of electrospray ionization mass spectrometry (ESI-MS) in parallel with 29Si and 1H NMR to elucidate the aqueous speciation and temporal evolution of the organosilane methyldiethoxysilane (MDES) through hydrolysis ... -
Pseudopeptidic Cages as Receptors for N-Protected Dipeptides
Faggi, Enrico; Moure, Alejandra; Bolte, Michael; Vicent Barrera, Cristian; Luis, Santiago V.; Alfonso Rodríguez, Ignacio American Chemical Society (2014-04)The molecular recognition of short peptides is a challenge in supramolecular chemistry, and the use of peptide-like cage receptors represents a promising approach. Here we report the synthesis and characterization of a ... -
Pseudopeptidic host adaptation in peptide recognition unveiled by ion mobility mass spectrometry
Tapia, Lucia; Pérez, Yolanda; Solà, Jordi; Luis, Santiago V.; Alfonso, Ignacio; Vicent Barrera, Cristian Royal Society of Chemistry (2022-12-07)Complexation of the glutamic–tyrosine–glutamic tripeptide (EYE) with a series of pseudopeptidic cages has been thoroughly investigated using different analytical techniques. The stoichiometry and affinities of the ... -
Radical Mechanism in the Elimination of 2-Arylsulfinyl Esters
Latorre, Antonio; López Martín, Irakusne; Ramírez, Victoria; Rodríguez, Santiago; Izquierdo Ferrer, Javier; González, Florenci; Vicent Barrera, Cristian American Chemical Society (2012-05)The mechanism of the dehydrosulfenylation of 2-arylsulfinyl esters was investigated. The reaction was found to follow a homolytic cleavage mechanism as verified by electrospray ionization tandem mass spectrometry and ... -
Ruthenium molecular complexes immobilized on graphene as active catalysts for the synthesis of carboxylic acids from alcohol dehydrogenation
Ventura Espinosa, David; Vicent Barrera, Cristian; Baya, Miguel; Mata Martínez, Jose A Royal Society of Chemistry (2016-09)Ruthenium complexes containing N-heterocyclic carbene ligands functionalized with different polyaromatic groups (pentafluorophenyl, anthracene, and pyrene) are immobilized onto the surface of reduced graphene oxide. The ... -
Stereoisomerization of β-Hydroxy-α-sulfenyl-γ-butyrolactones Controlled by Two Concomitant 1,4-Type Nonbonded Sulfur−Oxygen Interactions As Analyzed by X-ray Crystallography
González, Florenci; Jain, Amit; Rodríguez, Santiago; Sáez, José A.; Vicent Barrera, Cristian; Peris, Gabriel American Chemical Society (2010)We have synthesized nine β-hydroxy-α-sulfenyl-γ-butyrolactones having different substituents. The syn-anti or syn-syn lactones (or any mixture of both) invariably isomerized into syn-anti/syn-syn lactones in a ratio of ... -
Stereoselective recognition of the Ac-Glu-Tyr-OH dipeptide by pseudopeptidic cages
Faggi, Enrico; Vicent Barrera, Cristian; Luis, Santiago V.; Alfonso Rodríguez, Ignacio Royal Society of Chemistry (2015)Pseudopeptidic molecular cages are appealing receptors since they can display different polar and nonpolar interaction sites in a modular framework and a controlled disposition. Inspired by previous host– guest knowledge, ... -
Tight and Selective Caging of Chloride Ions by a Pseudopeptidic Host
Martí Vidal, Inés; Bolte, Michael; Burguete, M. Isabel; Vicent Barrera, Cristian; Alfonso Rodríguez, Ignacio; Luis, Santiago V. WILEY-VCH Verlag GmbH & Co. KGaA (2014-06)The selective molecular recognition of chloride versus similar anions is a continuous challenge in supramolecular chemistry. We have designed and prepared a simple pseudopeptidic cage (1 a) that defines a cavity suitable ... -
Unveiling anion-induced folding in tripodal imidazolium receptors by ion-mobility mass spectrometry
Vicent Barrera, Cristian; Valls Ten, Adriana; Escorihuela, Jorge; Altava, Belen; Luis, Santiago V. The Royal Society of Chemistry (2021-08-02)The anion-induced folding of tripodal imidazolium receptors has been investigated by NMR spectroscopy, electrospray ionization ion mobility mass spectrometry and DFT calculations. Such folding can be switched by anion ...