Niobium(v) chloride and imidazolium bromides as efficient dual catalyst systems for the cycloaddition of carbon dioxide and propylene oxide
Type
ArticleAuthors
Wilhelm, Michael E.Anthofer, Michael H.
Reich, Robert M.
D’Elia, Valerio

Basset, Jean-Marie

Herrmann, Wolfgang A.
Cokoja, Mirza
Kühn, Fritz
KAUST Department
Chemical Science ProgramKAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Date
2014Permanent link to this record
http://hdl.handle.net/10754/577047
Metadata
Show full item recordAbstract
The application of niobium(v) chloride and several imidazolium bromides as catalyst systems for the cycloaddition of propylene oxide (PO) with carbon dioxide to propylene carbonate (PC) is reported. A set of 31 different imidazolium bromides has been synthesized with varying substituents at all five imidazolium ring atoms, of which 17 have not been reported before. The impact of different substitution patterns (steric and electronic changes and solubility in PO) at the imidazolium ring on the catalytic activity was investigated. The optimisation of the catalyst structure allows for the valorisation of carbon dioxide under mild reaction conditions with high reaction rates in very good yield and selectivity for PC. This journal is © the Partner Organisations 2014.Citation
Wilhelm, M. E., Anthofer, M. H., Reich, R. M., D’Elia, V., Basset, J.-M., Herrmann, W. A., … Kühn, F. E. (2014). Niobium(v) chloride and imidazolium bromides as efficient dual catalyst systems for the cycloaddition of carbon dioxide and propylene oxide. Catal. Sci. Technol., 4(6), 1638–1643. doi:10.1039/c3cy01057kSponsors
MEW, MHA and RMR thank the TUM Graduate School for financial support. The authors thank T. Hofmann for experimental assistance.Publisher
Royal Society of Chemistry (RSC)Journal
Catalysis Science & Technologyae974a485f413a2113503eed53cd6c53
10.1039/C3CY01057K