Transformation of Atmospheric CO2 Catalyzed by Protic Ionic Liquids: Efficient Synthesis of 2‐Oxazolidinones1. Issue 18 (3rd March 2015)

• Record Type: Journal Article
• Authors: Hu, Jiayin; Ma, Jun; Zhu, Qinggong; Zhang, Zhaofu; Wu, Congyi; Han, Buxing
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 18(2015)
• Page Start: 5399
• Page End: 5403
• Publication Date: 2015-03-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201411969
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>