![2,2'-{2,2-Propanediylbis[(2,6-dibromo-4,1-phenylene)oxy]}diethanol structure](https://static.chemtradehub.com/structs/416/4162-45-2-b3d6.webp "2,2'-{2,2-Propanediylbis[(2,6-dibromo-4,1-phenylene)oxy]}diethanol structure")
2,2'-{2,2-Propanediylbis[(2,6-dibromo-4,1-phenylene)oxy]}diethanol
CAS Number:
4162-45-2
Molecular Formula:
C19H20Br4O4
Imidazolium-based ionic liquid decorated zinc porphyrin catalyst for converting CO2 into five-membered heterocyclic molecules
Literature Information
Publication Date
2017-10-31
DOI
10.1039/C7SE00464H
Impact Factor
6.367
Authors
Yaju Chen, Rongchang Luo, Zhi Yang, Xiantai Zhou, Hongbing Ji
View Original
Abstract
An imidazolium-based ionic liquid (IL) functionalized zinc porphyrin catalyst was successfully synthesized for the first time, and was employed as an efficient catalyst for CO2 transformation including both the chemoselective synthesis of cyclic carbonates from various epoxides and the regioselective synthesis of 5-aryl-2-oxazolidinones from N-substituted aziridines. Detailed studies demonstrated that the intramolecular cooperative effect between the coordinated zinc center (electrophile) and flexible bromine anions (nucleophile) could mediate these reactions effectively under solvent-free and mild conditions. More importantly, the IL-based catalyst could be readily recovered by solvent precipitation and reused with retention of high activity and selectivity more than ten times based on the concept of “one-phase catalytic coupling with two-phase separation”.
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