Articles producció científica> Química Física i Inorgànica

Iron(III) versatile catalysts for cycloaddition of CO2 to epoxides and epoxidation of alkenes

  • Datos identificativos

    Identificador: PC:2702
    Autores:
    Cuesta-Aluja, L.Masdeu-Bultó, A.M.
    Resumen:
    Fe(III) complexes with tridentate pyridine-imine-phenolato ligands differing in the chain length between the imine and pyridine groups (2-methylpyridine L1 and 2-ethylpyridine L2) have been synthesized. New complex [Fe(L2)2]ClO4 (2) was characterized by X-ray diffraction and spectroscopic techniques. [Fe(L1)2]ClO4 (1) and 2 form active catalysts for the cycloaddition of CO2 to epoxides and for the epoxidation of alkenes. Catalytic systems with the more flexible skeleton (2) in combination with tetrabutylammonium bromide (TBAB) were more active than 1/TBAB in the cycloaddition of CO2 to epoxides. TOFs up to 900 h−1 for the selective synthesis of styrene carbonate and 3640 h−1 for the synthesis of glycidol carbonate were obtained using 2/TBAB at low catalyst loadings (0.025 mol %). Additionally, 2 was also active in the epoxidation of styrene derivatives such as trans-stilbene (conversion 88 %) and trans-β-methylstyrene (conversion 100 %) using tert-butylhydroperoxide as oxidant at 60 ºC in acetonitrile. Epoxidation of styrene and cyclohexene proceed at low conversions.
  • Otros:

    Autor según el artículo: Cuesta-Aluja, L.; Masdeu-Bultó, A.M.
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: CUESTA ALUJA, LAIA; MASDEU BULTÓ, ANNA MARIA
    Palabras clave: Fe(III) catalysis
    Resumen: Fe(III) complexes with tridentate pyridine-imine-phenolato ligands differing in the chain length between the imine and pyridine groups (2-methylpyridine L1 and 2-ethylpyridine L2) have been synthesized. New complex [Fe(L2)2]ClO4 (2) was characterized by X-ray diffraction and spectroscopic techniques. [Fe(L1)2]ClO4 (1) and 2 form active catalysts for the cycloaddition of CO2 to epoxides and for the epoxidation of alkenes. Catalytic systems with the more flexible skeleton (2) in combination with tetrabutylammonium bromide (TBAB) were more active than 1/TBAB in the cycloaddition of CO2 to epoxides. TOFs up to 900 h−1 for the selective synthesis of styrene carbonate and 3640 h−1 for the synthesis of glycidol carbonate were obtained using 2/TBAB at low catalyst loadings (0.025 mol %). Additionally, 2 was also active in the epoxidation of styrene derivatives such as trans-stilbene (conversion 88 %) and trans-β-methylstyrene (conversion 100 %) using tert-butylhydroperoxide as oxidant at 60 ºC in acetonitrile. Epoxidation of styrene and cyclohexene proceed at low conversions.
    Grupo de investigación: Organometàl.lics i Catàlisi Homogènia
    Áreas temáticas: Chemistry Química Química
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2365-6549
    Identificador del autor: ;
    Fecha de alta del registro: 2017-03-22
    Página final: 2070
    Volumen de revista: 1
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: http://onlinelibrary.wiley.com/doi/10.1002/slct.201600488/abstract
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1002/slct.201600488
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Página inicial: 2065
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

    Catalitzadors
    Anhídrid carbònic
    Fe(III) catalysis
    Chemistry
    Química
    Química
    2365-6549
  • Documentos:

  • Cerca a google

    Search to google scholar