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Issue 11, 2013
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High activity and switchable selectivity in the synthesis of cyclic and polymeric cyclohexene carbonates with iron amino triphenolate catalysts

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Abstract

Iron(III) amino triphenolate complexes were studied as catalysts for the reaction of carbon dioxide (CO2) with cyclohexene oxide, which can lead to the formation of cyclic carbonate and/or polycarbonate products. Both types of compound are relevant, but for their practical application it is crucial to be able to control the selectivity of the reaction. By working under solvent-free, green conditions with CO2 in the supercritical state and by tailoring the nature and the relative amount of the co-catalyst (Bu4NX or PPNX, where X is a halide) used in combination with the iron(III) complex, we have been able to enhance the catalytic efficiency and achieve a selective and high-yield synthesis of either the cyclic or the polymeric product. The studied reaction is relevant in the context of green chemistry as it provides an atom-efficient route for the conversion of CO2, which is an inexpensive, widely available, renewable and non-toxic feedstock, into valuable products.

Graphical abstract: High activity and switchable selectivity in the synthesis of cyclic and polymeric cyclohexene carbonates with iron amino triphenolate catalysts

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Publication details

The article was received on 04 Jul 2013, accepted on 27 Aug 2013 and first published on 27 Aug 2013


Article type: Paper
DOI: 10.1039/C3GC41303A
Green Chem., 2013,15, 3083-3090

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    High activity and switchable selectivity in the synthesis of cyclic and polymeric cyclohexene carbonates with iron amino triphenolate catalysts

    M. Taherimehr, S. M. Al-Amsyar, C. J. Whiteoak, A. W. Kleij and P. P. Pescarmona, Green Chem., 2013, 15, 3083
    DOI: 10.1039/C3GC41303A

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