7 projets européens trouvés
Recherche sur 125080 projets européens
TERMINÉ
C-H Acids for Organic Synthesis (CHAOS)
Date du début: 1 oct. 2016, Date de fin: 30 sept. 2021,
Enantioselective Brønsted acid organocatalysis has the potential to revolutionize asymmetric synthesis. However, the commonly used chiral phosphoric acid catalysts are typically limited to certain, fairly reactive substrate classes such as imines. Recently, more active and stereoselective catalysts have been introduced, which rely on acidic N–H bonds, and which have significantly widened the scope ...
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1
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TERMINÉ
Orthogonalization Models in Semiempirical Quantum Chemistry (OMSQC)
Date du début: 1 janv. 2014, Date de fin: 31 déc. 2018,
"The proposal aims at the development of a generally applicable semiempirical approach that goes beyond the current standard model by including explicit orthogonalization and dispersion terms into the semiempirical Hamiltonian. We have recently shown in preliminary work on organic molecules that such orthogonalization models (OMx = OM1, OM2, OM3) are significantly more accurate than standard semie ...
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1
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TERMINÉ
CAScade deoxygenation process using tailored nanoCATalysts for the production of BiofuELs from lignocellullosic biomass (CASCATBEL)
Date du début: 1 nov. 2013, Date de fin: 31 oct. 2017,
The present project is aimed to the development of a multi-step process for the production of second-generation biofuels from lignocellulosic biomass in a cost-efficient way through the use of tailored nanostructured catalysts. The proposed process is based on the cascade combination of three catalytic transformations: catalytic pyrolysis, intermediate deoxygenation and hydrodeoxygenation. The seq ...
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18
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TERMINÉ
Activation of Hydrogen by Organic Frustrated Lewis Pairs. Applications in catalysis (Frustrated Hydrogen)
Date du début: 1 oct. 2011, Date de fin: 31 mai 2017,
Activation of H2 is typically a domain of transition metal catalysis -even nature uses metal-centred reactions for this process. However, very recently Stephan and Erker have described metal free systems able to activate dihydrogen by the use of Frustrated Lewis Pairs (FLP), a combination of sterically hindered Lewis acids and Lewis bases that for this geometric reason are not able to quench each ...
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3
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TERMINÉ
From Flat to Chiral: A unified approach to converting achiral aromatic compounds to optically active valuable building blocks (FLATOUT)
Date du début: 1 janv. 2012, Date de fin: 31 déc. 2016,
"The stereoselective preparation of enantioenriched organic compounds of high structural complexity and synthetic value, in an economically viable and expeditious manner, is one of the most important goals in contemporary Organic Synthesis. In this proposal, I present a unified and conceptually novel approach for the conversion of flat, aromatic heterocycles into highly valuable compounds for a v ...
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2
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TERMINÉ
High Performance Lewis Acid Organocatalysis (HIPOCAT)
Date du début: 1 févr. 2011, Date de fin: 31 janv. 2016,
Although the demand for chiral enantiomerically pure molecules as pharmaceuticals, agrochemicals, and liquid crystals is growing strongly, the use of asymmetric catalysis for their production is rare. The most common industrial method to produce enantiopure compounds is still chiral resolution, which wastes half of the material. This surprises considering that catalytic methods are potentially cos ...
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1
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TERMINÉ
Polymeric catalysts and supports: A new paradigm for biomass processing (POLYCAT)
Date du début: 1 mars 2010, Date de fin: 28 févr. 2015,
Transforming part of the feedstock base of the chemical industry from fossil feedstocks to biomass, as expected by many researchers and companies, requires fundamental changes in the technologies for processing. While fossil feedstocks are non-polar and processed at high temperatures in the gas phase, most biomass derived feedstocks are polar molecules, which are present in aqueous solution and ar ...
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