Dual zinc catalysts for L‐lactide polymerization and reaction of CO2 with cyclohexene oxide |
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| Authors: | Wei‐Chu Wang Shih‐Hsien Hsu Yu‐Chia Su Hsuan‐Ying Chen Chu‐Chieh Lin |
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| Institution: | 1. Department of Chemistry, National Chung Hsing University, Taichung, Taiwan, ROC;2. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC;3. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, ROC;4. Prof. Hsuan‐Ying Chen, Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, R.O.C.;5. Prof. Chu‐Chieh Lin, Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, R.O.C. |
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| Abstract: | A series of zinc complexes, L X ZnEt] ( 1–5 ) and L X Zn 2 (OAc) 3 ] (6–9) , associated with NNO‐tridentate Schiff base ligands (2‐(((2‐((cyclohexylmethyl]amino)methyl)phenyl)imino)methyl)phenolate (CAP) derivatives), were synthesized, and their activity toward ring‐opening polymerization (ROP) of L‐lactide (LA) and the reaction of CO2 with cyclohexene oxide were also investigated. All of L X ZnEt] revealed excellent catalytic activity to ring‐opening polymerization (ROP) of LA in the presence of benzyl alcohol. Among them, L H ZnEt] (1) showed the highest activity with 82% conversation within 45 s. In contrast, L X Zn 2 (OAc) 3 ] (6–9) were inactive in ROP of L‐lactide. In addition, all of these Zn complexes demonstrated moderate activity in the reaction of CO2 with cyclohexene oxide in the presence of Bu4NCl. |
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| Keywords: | inorganic chemistry organometallic chemistry polymer chemistry |
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