Efficient cycloaddition of CO2 to epoxides using novel heterogeneous organocatalysts based on tetramethylguanidine-functionalized porous polyphenylenes.
In: Journal of CO2 Utilization, Jg. 25 (2018-05-01), S. 170-179
Online
academicJournal
Zugriff:
The conversion of CO 2 into cyclic carbonates by cycloaddition to epoxides is achieved under relatively mild reaction conditions (without solvent, 7 bar of CO 2 , 100 °C) using easily available heterogeneous tetramethylguanidine(TMG)-polyphenylene organocatalysts. These new highly stable catalysts were easily prepared by reaction of tetramethylurea in the presence of oxalyl chloride with aminomethyl polyphenylenes. The TMG-functionalized polyphenylene (2PhCH 2 TMG) prepared from a pre-functionalized network was efficient and competitive compared with other reported catalysts achieving high epoxides conversion (>90%) and 100% selectivity towards the corresponding cyclic carbonates. The catalyst was easily separated from the reaction media and reused after basic regeneration without loss of activity. [ABSTRACT FROM AUTHOR]
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Titel: |
Efficient cycloaddition of CO2 to epoxides using novel heterogeneous organocatalysts based on tetramethylguanidine-functionalized porous polyphenylenes.
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Autor/in / Beteiligte Person: | Maya, Eva M. ; Rangel-Rangel, Elizabeth ; Díaz, Urbano ; Iglesias, Marta |
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Zeitschrift: | Journal of CO2 Utilization, Jg. 25 (2018-05-01), S. 170-179 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 2212-9820 (print) |
DOI: | 10.1016/j.jcou.2018.04.001 |
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