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Mostrando ítems 1-10 de 19
Artículo
Preparation of Chitosan-supported Urea Materials and their Application in Some Organocatalytic Procedures
(Elsevier, 2018)
An efficient and mild procedure was developed for the preparation of three chitosan-supported ureas containing electron-withdrawing groups. These catalysts were characterized and employed as organocatalysts in different ...
Artículo
A Dynamic Kinetic Asymmetric Heck Reaction for the Simultaneous Generation of Central and Axial Chirality
(American Chemical Society, 2018)
A highly diastereo- and enantioselective, scalable Pd-catalyzed dynamic kinetic asymmetric Heck reaction of heterobiaryl sulfonates with electron-rich olefins is described. The coupling of 2,3-dihydrofuran or N-boc protected ...
Artículo
Nuevas estrategias en el proceso de enseñanza-aprendizaje de la asignatura Experimentación Química II del Grado en Ingeniería Química Industrial
(Universidad de Sevilla, 2018)
El trabajo realizado durante el desarrollo del ciclo de mejora experimentado en la asignatura Experimentación en Química II se ha centrado en dos pilares fundamentales: 1) Interconexión de los contenidos teórico-prácticos ...
Artículo
Germination and Early Seedling Development in Quercus ilex Recalcitrant and Non-dormant Seeds: Targeted Transcriptional, Hormonal, and Sugar Analysis
(Frontiers Media, 2018)
Seed germination and early seedling development have been studied in the recalcitrant species Quercus ilex using targeted transcriptional, hormonal, and sugar analysis. Embryos and seedlings were collected at eight ...
Patente
Procedimiento para la obtención de secoiridoides dialdehídicos
(Oficina Española de Patentes y Marcas , 2018-11-20)
Procedimiento para la obtención de secoiridoides dialdehídicos.Esta invención se refiere un procedimiento para la obtención de secoiridoides dialdehídicos, tales como la oleaceína y oleocantal mediante el uso de DMSO. Este ...
Artículo
Bifunctional Squaramide Organocatalysts for the Asymmetric Addition of Formaldehyde tert-Butylhydrazone to Simple Aldehydes
(Wiley-Blackwell, 2018)
The nucleophilic addition of formaldehyde tert-butylhydrazone to simple aldehydes (a formal hetero-carbonyl–ene reaction) can be performed with good reactivity and excellent enantioselectivity by virtue of the dual ...
Tesis Doctoral
Phenolics as carbonyl scavengers: an additional protection against lipid oxidative damage in foods.
(2018-04-13)
Los compuestos fenólicos, además de actuar como agentes quelantes de metales y de capturar radicales libres, también pueden estar limitando el daño producido por la oxidación lipídica en alimentos mediante la captura de ...
Artículo
N-Heterotricyclic Cationic Carbene Ligands. Synthesis, Reactivity and Coordination Chemistry
(Royal Society of Chemistry, 2018)
The direct dialkylation of triazolo[4,3-b]isoquinolin-3-ylidene structures readily affords dicationic N-heterotricyclic azolium salts. These are suitable starting materials for the synthesis of transition metal complexes ...
Artículo
Stereoselective enzymatic reduction of 1,4-diaryl-1,4-diones to the corresponding diols employing alcohol dehydrogenases
(MDPI, 2018)
Due to the steric hindrance of the starting prochiral ketones, the preparation of chiral 1,4-diaryl-1,4-diols through the asymmetric hydrogen transfer reaction has been mainly restricted to the use of metal-based catalysts, ...
Artículo
Synthesis of unprecedented steroidal spiro heterocycles as potential antiproliferative drugs
(Elsevier, 2018-01-01)
Herein we report the straightforward preparation of novel conformationally-restricted steroids from trans-androsterone and estrone, decorated with spiranic oxazolidin-2-one or 2-aminooxazoline motifs at C-17 as potential ...