Objectif Traditional methods of production of enantiopure compounds include separation of racemates by crystallisation of diastereomeric salts, enzymatic resolution and increasingly also asymmetric catalysis. All these methods have certain advantages and may well b e the cheapest method for a particular chiral compound. However, in all cases the selection and optimisation of the method may take considerable development for each separate case and is still very much guided by a trial-and-error approach. An alternative approach to those described above for the separation of racemates, relies on the ability of chiral host compounds to discriminate between the two enantiomers of a racemate, thus allowing the physical separation of the enantiomers.We plan to adopt a very promising method, namely the enantiomeric separation of racemic mixtures by extraction involving the selective coordination of one enantiomer to a hydrophobic chiral metal complex in the organic phase and the extraction of the uncomplexed enantiomer in the aqueous phase. The main objective of this project is the design and synthesis of chiral metal complexes for the enantioselective separation of racemic mixtures of entire classes of compounds (e.g. carboxylic acids, amino acid derivatives, hydroxy acids, but also amine derivatives) by extraction. Libraries of chiral ligands (ca. 100-125 compounds) will be synthesized in a parallel format, starting from a variety of chiral diamino or aminoalcohol scaffolds, and other chiral reagents (beta-aminosulfonyl chlori des, Boc-amino acids) as well as salicyl aldehydes.Purification by chromatography of the intermediates and of the final products will be avoided by using solid-phase scavenger resins. The chiral complexes with transitions metals will then be synthesized and the selectors will be used in the enantioselective extraction of a variety of racemic substrates. In addition, the factors influencing the extraction and re-extraction enantioselectivity will be examined. Champ scientifique natural scienceschemical sciencesorganic chemistryaldehydesnatural scienceschemical sciencesorganic chemistryorganic acidsnatural scienceschemical sciencesinorganic chemistryalkali metalsnatural scienceschemical sciencesinorganic chemistrytransition metalsnatural scienceschemical sciencesorganic chemistryamines Mots‑clés chiral metal complexes chiral selectors enantiomers extraction modular ligands parallel synthesis racemates separation Programme(s) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Thème(s) MOBILITY-2.1 - Marie Curie Intra-European Fellowships (EIF) Appel à propositions FP6-2002-MOBILITY-5 Voir d’autres projets de cet appel Régime de financement EIF - Marie Curie actions-Intra-European Fellowships Coordinateur UNIVERSITA DEGLI STUDI DI MILANO Contribution de l’UE Aucune donnée Adresse Via Festa Del Perdono 7 MILANO Italie Voir sur la carte Liens Site web Opens in new window Coût total Aucune donnée