Journal
GREEN CHEMISTRY
Volume 18, Issue 1, Pages 226-231Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5gc01826a
Keywords
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Funding
- National Natural Sciences Foundation of China
- Specialized Research Fund for the Doctoral Program of Higher Education [20130031110013]
- MOE Innovation Team of China [IRT13022]
- 111 Project of the Ministry of Education of China [B06005]
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An efficient and recyclable catalytic system of a Zn(O)(4)-coordinated complex e.g. 2-hydroxypyridine N-oxide zinc(II), Zn(OPO)(2) and tetrabutylammonium iodide (TBAI) was developed for the cyclic carbonate synthesis from epoxides and CO2 without the use of any organic solvents. This easily prepared, low-toxic Zn(OPO)(2) may have a strong Lewis acidity for the activation of epoxides and exhibited high activity (TOF up to 22 000 h(-1)) even at a CO2 pressure as low as 1 bar with a broad substrate scope. Furthermore, the catalyst can be easily recovered and reused five times without a significant loss of its catalytic activity.
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