Bu, Chao, Gong, Yanyan, Du, Minchen, Chen, Cheng, Chaemchuen, Somboon, Hu, Jia, Zhang, Yongxing, Díaz Velázquez, Heriberto, Yuan, Ye, Verpoort, Francis, and Macario, Anastasia
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. [ABSTRACT FROM AUTHOR]