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Transformation of Carbon Dioxide into Oxazolidinones and Cyclic Carbonates Catalyzed by Rare‐Earth‐Metal Phenolates

Rare‐earth‐metal complexes stabilized by amine‐bridged tri(phenolato) ligands were developed, and their activities in catalyzing transformations of CO2 were studied. A series of terminal epoxides and challenging disubstituted epoxides were converted into the respective cyclic carbonates in the presence of CO2 in yields of 58 to 96 %. In addition, these rare‐earth‐metal complexes also showed good activities in catalyzing three‐component reactions of anilines, epoxides, and CO2, which generated 5‐substituted‐3‐aryl‐2‐oxazolidines in yields of 48 to 96 %, as a useful strategy to construct oxazolidinones.