Highly Enantioselective Catalytic System for Asymmetric Copolymerization of Carbon Dioxide and Cyclohexene Oxide |
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| Authors: | Yuan‐Zhao Hua Liu‐Jie Lu Pei‐Jin Huang Dong‐Hui Wei Prof Ming‐Sheng Tang Prof Dr Min‐Can Wang Prof Dr Jun‐Biao Chang |
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| Institution: | College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (P.R. China), Fax: (+86)?371‐67767895 |
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| Abstract: | A new ligand can be easily prepared, and its intramolecular dinuclear zinc complexes act as a high performance catalyst for the asymmetric alternating copolymerization of cyclohexene oxide and CO2 under very mild conditions (1 atm CO2, room temperature), affording completely alternating polycarbonates with up to 93.8 % enantiomeric excess (ee) and 98 % yield. A high Mn value of 28 600 and a relatively narrow polydispersity (Mw/Mn ratio) of 1.43 were also achieved. |
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| Keywords: | asymmetric copolymerization carbon dioxide cyclohexene oxide polycarbonates zinc |
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