Highly active Cr(iii) catalysts for the reaction of CO2 with epoxides

Sait Elmas, Afzal Subhani, Marcus Harrer, Walter Leitner, Jörg Sundermeyer, Thomas Müller

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    42 Citations (Scopus)

    Abstract

    This paper describes the synthesis and characterization of [Cr(babhq)OAcF(EtOH)] (OAcF- = CF3CO 2-) as well as the application of the complex as the catalyst in the reaction of CO2 with epoxides. While cyclic propylene-carbonate was obtained as the sole product when propylene oxide was used as epoxide, alternating polycarbonate was obtained with cyclohexene oxide. Following the course of the reaction with in situ IR spectroscopy revealed that a direct pathway to the formation of cyclic carbonate prevails in the case of propylene oxide whereas the polycarbonate obtained from cyclohexene oxide is prone to degradation to cyclic carbonate. The differences in chemoselectivity are rationalised on the basis of the propensity of the ligand to adopt a podand-like structural motif allowing for an inner-sphere mechanism. This journal is

    Original languageEnglish
    Pages (from-to)1652-1657
    Number of pages6
    JournalCatalysis Science and Technology
    Volume4
    Issue number6
    DOIs
    Publication statusPublished - 2014

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  • Cite this

    Elmas, S., Subhani, A., Harrer, M., Leitner, W., Sundermeyer, J., & Müller, T. (2014). Highly active Cr(iii) catalysts for the reaction of CO2 with epoxides. Catalysis Science and Technology, 4(6), 1652-1657. https://doi.org/10.1039/c3cy01087b