Novel aluminum complexes bearing 2-(aminomethylene)malonate ligands with high efficiency and controllability in ring-opening polymerization of ε-caprolactone
| Autor: | Wei Yi Lu, Kuo Hui Wu, Chi Chi Chang, Yung Chi Chang, Yi Chun Lai, Hsuan-Ying Chen, Ya Fan Lin |
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| Rok vydání: | 2019 |
| Předmět: |
Steric effects
Polymers and Plastics Organic Chemistry General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ring-opening polymerization Medicinal chemistry 0104 chemical sciences Catalysis chemistry.chemical_compound Malonate chemistry Polymerization Materials Chemistry Chelation Methylene 0210 nano-technology Caprolactone |
| Zdroj: | European Polymer Journal. 115:399-408 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2019.03.055 |
| Popis: | A series of Al complexes bearing diethyl 2-((arylamino)methylene)malonate and diethyl 2-((alkylamino)methylene)malonate ligands (AMM ligands) were synthesized and their application in the ring-opening polymerization of e-caprolactone was studied. All the Al complexes bearing AMM ligands exhibited higher catalytic activity (approximately 2.8–16.5 fold) than those Al complexes bearing ketiminate ligands did, except OiPrAlMe2 (2 fold lower catalytic activity). In addition, Al complexes with steric hindrance or electron-withdrawing groups in the ligands revealed the greater catalytic activity, and the chelating effect reduced the reactivity of ring-opening polymerization. |
| Databáze: | OpenAIRE |
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