Search results for "stereo"

Predstavleniâ molodëži v vozraste ot 13-ti do 14-ti let o Rossii, russkih i russkom âzyke : (opyt analiza social'nyh stereotipov)

1997

Mejora de la captura y reproducción de imágenes integrales mediante la implementación de técnicas ópticas. Aplicaciones industriales

2022

Las imágenes tridimensionales proporcionan una visión realista del mundo que nos rodea, de ahí el interés por reproducirlas de ese modo. Esto no solo es atractivo desde una perspectiva visual y recreativa, sino que aporta un gran valor al estudio en ciencias y medicina, y al análisis y detección en los procesos industriales. De entre las técnicas que hay para capturar y reproducir imágenes 3D reales, la de imagen integral es la única capaz de hacerlo con luz natural, de forma autoestereoscópica, con paralaje continuo vertical y horizontal, en tiempo real y con tecnología de consumo. Sin embargo, y aunque se han producido grandes avances en los últimos veinte años, la técnica aún presenta ci…

Asymmetric Organocatalytic Synthesis of 4-Aminoisochromanones via a Direct One-Pot Intramolecular Mannich Reaction

2016

Synthesis 48(24), 4451 - 4458(2016). doi:10.1055/s-0035-1562522

"Mutta mehän sovimme, että sinä hoidat lasta, kun minä rupean rehtoriksi." sukupuolistereotypiat oppikirjassa

2008

New simple hydrophobic proline derivatives as highly active and stereoselective catalysts for the direct asymmetric aldol reaction in aqueous medium

2008

New 4-substituted acyloxyproline derivatives with different hydrophobic properties of the acyl group were easily synthesized and used as catalysts in the direct asymmetric aldol reaction between cyclic ketones (cyclohexanone and cyclopentanone) and several substituted benzaldehydes. Reactions were carried out using water, this being the best reaction medium examined. Screening of these catalysts showed that compounds bearing the most hydrophobic acyl chains [4-phenylbutanoate and 4-(pyren-1-yl)butanoate] provided better results. The latter catalysts were successfully used in only 2 mol% at room temperature without additives to give aldol products in excellent stereoselectivities. These resu…

Fluorine-containing functionalized cyclopentene scaffolds through ring contraction and deoxofluorination of various substituted cyclohexenes

2018

The fluorination of some highly‐functionalized cyclopentene derivatives, obtained from various substituted cyclohexenes through a ring‐opening/ring‐contraction procedure, has been investigated. The transformations were found to be highly substrate dependent, and led to the formation of various functionalized alicyclic compounds or heterocycles containing allyl difluoride or vinyl fluoride moieties. peerReviewed

New charge transfer salts of two organic π-donors of the tetrathiafulvalene type with the paramagnetic [Cr(NCS)6]3- anion

2003

cited By 9; International audience; The electrochemical combination of the paramagnetic anion [Cr(NCS)6]3- with the organic π-donors bis(ethylenedithio)tetrathiafulvalene (ET) and 4,5-bis(2-hydroxyethylthio) -4′,5′-ethylenedithiotetrathiafulvalene (DHET-EDTTTF) leads to two new radical cation salts, namely (ET)4 [Cr(NCS 6]·PhCN 1 and (DHET-EDTTTF)2 (NEt4)[Cr(NCS)6] 2. Both have been characterized by X-ray crystallography, magnetic and resistivity measurements. The structure of 1 consists of alternating inorganic layers generated by the anions and organic layers in which the PhCN molecules are inserted; the organic sub-lattice is built up from four different ET units, three of them with a ch…

Synthesis, NMR spectral and structural studies on mixed ligand complexes of Pd(II) dithiocarbamates: First structural report on palladium(II) dithioc…

2016

Abstract Three new mixed ligand complexes of palladium(II) dithiocarbamates; [Pd(4-dpmpzdtc)(PPh3)(SCN)] (1), [Pd(4-dpmpzdtc)(PPh3)Cl] (2) and [Pd(bzbudtc)(PPh3)Cl] (3), (where, 4-dpmpzdtc = 4-(diphenylmethyl)piperazinecarbodithioato anion, bzbudtc = N-benzyl-N-butyldithiocarbamato anion and PPh3 = triphenylphosphine) have been synthesized from their respective parent dithiocarbamates by ligand exchange reactions and characterized by IR and NMR (1H, 13C and 31P) spectroscopy. IR and NMR spectral data support the isobidentate coordination of the dithiocarbamate ligands in all complexes (1–3) in solid and in solution, respectively. Single crystal diffraction analysis of complexes 1–3 evidence…

On the relations between parents’ and children’s implicit and explicit academic gender stereotypes.

2017

Although parents may represent influential sources of children’s gender stereotypes, to date no study has directly investigated the relations between parents’ and children’s gender stereotypes regarding academic abilities. Aiming at filling this gap, in the present study parents’ and their young children’s gender stereotypes about math and language were assessed using both explicit and implicit measures for each member of the family. Sixty-eight Italian 6-year-olds, their mothers, and their fathers (a) performed an Implicit Association Test designed to assess implicit gender stereotypes about math and language, and (b) completed a measure of the relevant explicit stereotypes. Fathers’, but …

Synthesis and Molecular Modeling Studies of Derivatives of a Highly Potent Peptidomimetic Vinyl Ester as Falcipain-2 Inhibitors

2012

Herein we report the synthesis of a set of constrained peptidomimetics endowed with an electrophilic vinyl ester warhead and structurally related to a previously identified lead compound, a potent and irreversible inhibitor of falcipain-2 (FP-2). FP-2 is the main hemoglobinase of the malaria parasite P. falciparum. The new compounds were evaluated for their inhibition against FP-2, and the results were rationalized on the basis of docking experiments. These studies underscore the pivotal role of both the ester function at the P1' site and the trifluoromethyl group of the P3 side chain in determining the correct orientation of the Michael acceptor warhead in the catalytic site, and as a cons…