Transformation of Atmospheric CO2 Catalyzed by Protic Ionic Liquids: Efficient Synthesis of 2‐Oxazolidinones
Abstract
Protic ionic liquids (PILs), such as 1,8-diazabicyclo[5.4.0]-7-undecenium 2-methylimidazolide [DBUH][MIm], can catalyze the reaction of atmospheric CO2 with a broad range of propargylic amines to form the corresponding 2-oxazolidinones. The products are formed in high yields under mild, metal-free conditions. The cheaper and greener PILs can be easily recycled and reused at least five times without a decrease in the catalytic activity and selectivity. A reaction mechanism was proposed on the basis of a detailed DFT study which indicates that both the cation and anion of the PIL play key synergistic roles in accelerating the reaction.
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Catalytic formation of C-N bonds results from reactions of CO2 with various amines to synthesize N-containing compounds, including oxazolidinones, quinazolines, ureas, imidazolinones, and benzimidazoles.
“Catalytic formation of C–N bonds resulting from the reactions of CO2 with various amines to the synthesis of N-containing compounds. Various N-containing compounds, including oxazolidinones, quinazolines, ureas, imidazolinones, and benzimidazoles, can be produced via these routes.297, 298, 299, 300”
From Technologies and perspectives for achieving carbon neutrality (2021) · cites this paper as [299]
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References 66 · Cited by 265
- Authors
- Hu, J., Ma, J., Zhu, Q., Zhang, Z., Wu, C., & Han, B.
- Affiliations
- Chinese Academy of Sciences (CN)
- Corresponding author
- Ma, Jun
- Han, Buxing
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-03-03
- Volume
- 54
- Issue
- 18
- Pages
- 5399-5403
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2169155502
- Cited by
- 265
- References
- 66
- Citations by year
- 2026: 4 · 2025: 15 · 2024: 17 · 2023: 20 · 2022: 15 · 2021: 19 · 2020: 31 · 2019: 28 · 2018: 35 · 2017: 32 · 2016: 33 · 2015: 15
- FWCI
- 14.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (21303224, 21403253, 21173239, 21133009, U1232203, 21321063)
- Chinese Academy of Sciences (KJCX2.YW.H30)
- Topics
- Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
- Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
- Physical Sciences › Chemistry › Organic Chemistry › Multicomponent Synthesis of Heterocycles
- Keywords
- atmospheric CO2, protic ionic liquids, 2-oxazolidinones, propargylic amines, metal-free catalysis, catalyst recycling, reaction mechanism, DFT calculations, CO2 utilization
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