Green Synthesis of 2-Oxazolidinones by an Efficient and Recyclable CuBr/Ionic Liquid System via CO2, Propargylic Alcohols, and 2-Aminoethanols

With the aim of profitable conversion of carbon dioxide (CO2) in an efficient, economical, and sustainable manner, we developed a CuBr/ionic liquid (1-butyl-3-methylimidazolium acetate) catalytic system that could efficiently catalyze the three-component reactions of propargylic alcohols, 2-aminoeth...

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Bibliographic Details
Published in:Catalysts 2021-02, Vol.11 (2), p.233
Main Authors: Bu, Chao, Gong, Yanyan, Du, Minchen, Chen, Cheng, Chaemchuen, Somboon, Hu, Jia, Zhang, Yongxing, Díaz Velázquez, Heriberto, Yuan, Ye, Verpoort, Francis
Format: Article
Language:English
Subjects:
carbon dioxide chemistry
copper catalysis
cyclization
multicomponent reaction
synthetic methods
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Summary:With the aim of profitable conversion of carbon dioxide (CO2) in an efficient, economical, and sustainable manner, we developed a CuBr/ionic liquid (1-butyl-3-methylimidazolium acetate) catalytic system that could efficiently catalyze the three-component reactions of propargylic alcohols, 2-aminoethanols, and CO2 to produce 2-oxazolidinones and α-hydroxy ketones. Remarkably, this catalytic system employed lower metal loading (0.0125–0.5 mol%) but exhibited the highest turnover number (2960) ever reported, demonstrating its excellent activity and sustainability. Moreover, our catalytic system could efficiently work under 1 atm of CO2 pressure and recycle among the metal-catalyzed systems.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal11020233