期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 8, 页码 2264-2275出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201302536
关键词
aluminium; carbon dioxide; carbonates; homogeneous catalysis; ligands
资金
- ICIQ
- ICREA
- Spanish Ministry of Science and Innovation (MINECO) [CTQ-2011-27385, CTQ2011-29054-C02-02]
- Spanish Ministry of Science and Innovation (MINECO, FPI)
- Generalitat de Catalunya [2009-SGR-259]
- ICREA Funding Source: Custom
Al-III complexes of amino-tris(phenolate) ligand scaffolds have been prepared to attain highly Lewis acidic catalysts. Combination of the aforementioned systems with ammonium halides provides highly active catalysts for the synthesis of organic carbonates through addition of carbon dioxide to oxiranes with initial turnover frequencies among the highest reported to date within the context of cyclic carbonate formation. Density functional theory (DFT) studies combined with kinetic data provides a rational for the relative high activity found for these Al-III complexes, and the data are consistent with a monometallic mechanism. The activity and versatility of these Al-III complexes has also been evaluated against some state-of-the-art catalysts and the combined results compare favorably in terms of catalyst construction, stability, activity, and applicability.
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