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Issue 25, 2013
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Reaction of CO2 with propylene oxide and styrene oxide catalyzed by a chromium(III) amine-bis(phenolate) complex

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Abstract

A diamine-bis(phenolate) chromium(III) complex, {CrCl[O2NN′]BuBu}2 catalyzes the copolymerization of propylene oxide with carbon dioxide. The synthesis of this metal complex is straightforward and it can be obtained in high yields. This catalyst incorporates a tripodal amine-bis(phenolate) ligand, which differs from the salen or salan ligands typically used with Cr and Co complexes that have been employed as catalysts for the synthesis of such polycarbonates. The catalyst reported herein yields low molecular weight polymers with narrow polydispersities when the reaction is performed at room temperature. Performing the reaction at elevated temperatures causes the selective synthesis of propylene carbonate. The copolymerization activity for propylene oxide and carbon dioxide, as well as the coupling of carbon dioxide and styrene oxide to give styrene carbonate are presented.

Graphical abstract: Reaction of CO2 with propylene oxide and styrene oxide catalyzed by a chromium(iii) amine-bis(phenolate) complex

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Publication details

The article was received on 24 Aug 2012, accepted on 06 Nov 2012 and first published on 12 Nov 2012


Article type: Paper
DOI: 10.1039/C2DT31942J
Citation: Dalton Trans., 2013,42, 9233-9244
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    Reaction of CO2 with propylene oxide and styrene oxide catalyzed by a chromium(III) amine-bis(phenolate) complex

    R. K. Dean, K. Devaine-Pressing, L. N. Dawe and C. M. Kozak, Dalton Trans., 2013, 42, 9233
    DOI: 10.1039/C2DT31942J

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