Articles producció científica> Química Física i Inorgànica

Modular hydroxyamide and thioamide pyranoside-based ligand library from the sugar pool: new class of ligands for asymmetric transfer hydrogenation of ketones

  • Identification data

    Identifier: PC:687
    Authors:
    Coll, M.Pàmies, O.Diéguez, M.
    Abstract:
    10.1002/adsc.201301112
  • Others:

    Author, as appears in the article.: Coll, M. Pàmies, O. Diéguez, M.
    Department: Química Física i Inorgànica
    Keywords: Hydrogenation
    Abstract: A large library of pyranoside‐based hydroxyamide and thioamide ligands has been synthesized for asymmetric transfer hydrogenation in an attempt to expand the scope of the substrates to cover a broader range of challenging heteroaromatic and aryl/fluoroalkyl ketones. These ligands have the advantage that they are prepared from commercial D‐glucose, D‐glucosamine and α‐amino acids, inexpensive natural chiral feedstocks. By carefully selecting the ligand components (substituents/configurations at the amide/thioamide moiety, the position of amide/thioamide group and the configuration at C‐2), we found that pyranoside‐based thioamide ligands provided excellent enantioselectivities (in the best cases, ees of >99% were achieved) in a broad range of ketones, including the less studied heteroaromatics and challenging aryl/fluoroalkyls. Note that both enantiomers of the reduction products can be obtained with excellent enantioselectivities by simply changing the absolute configuration of the thioamide substituent.
    Thematic Areas: Catalysis
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1615-4150
    Last page: 2302
    Journal volume: 356
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: http://onlinelibrary.wiley.com/doi/10.1002/adsc.201301112/abstract
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1002/adsc.201301112
    Entity: Universitat Rovira i Virgili.
    Journal publication year: 2014
    First page: 2293
  • Keywords:

    Asymmetric catalysis
    Hydrogenation
    Catalysis
    1615-4150
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