title: Improvement of ligand economy controlled by polymer morphology: the case of polymer-supported bis(oxazoline) catalysts.
abstract: A functionalized chiral bis(oxazoline) is used as a chiral monomer in polymerization reactions leading to homo- and copolymers of different morphology. Polymers with a high content of chiral monomer lead to enantioselectivities that are higher than those obtained with the soluble ligand, but the chiral ligand is not used in an optimal way. A hyperbranched polymer, obtained by using a hexavinyldendrimer as the cross-linker, leads to the same enantioselectivities with a more efficient use of the chiral ligand.
authors.affiliation: Dep. Química Inorgánica y Orgánica, E.S.T.C.E., Universidad Jaume I, E-12080 Castellón, Spain.
authors.forename: M I
authors.initials: MI
authors.lastname: Burguete
authors.forename: E
authors.initials: E
authors.lastname: Díez-Barra
authors.forename: J M
authors.initials: JM
authors.lastname: Fraile
authors.forename: J I
authors.initials: JI
authors.lastname: García
authors.forename: E
authors.initials: E
authors.lastname: García-Verdugo
authors.forename: R
authors.initials: R
authors.lastname: González
authors.forename: C I
authors.initials: CI
authors.lastname: Herrerías
authors.forename: S V
authors.initials: SV
authors.lastname: Luis
authors.forename: J A
authors.initials: JA
authors.lastname: Mayoral
authors.forename: P
authors.initials: P
authors.lastname: Sanchez-Verdú
mesh_terms: D002384:Catalysis; D003300:Copper / Q000737:chemistry; D003432:Cross-Linking Reagents / Q000138:chemical synthesis; D003521:Cyclopropanes / Q000737:chemistry; D003979:Diazonium Compounds / Q000737:chemistry; D008024:Ligands; D010080:Oxazoles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013237:Stereoisomerism
chemical_list: D003432:Cross-Linking Reagents; D003521:Cyclopropanes; D003979:Diazonium Compounds; D008024:Ligands; D010080:Oxazoles; D011108:Polymers; D011137:Polystyrenes; D003300:Copper; C024075:styrofoam; C030797:cyclopropane; C032111:diazoacetic ester