“…The increasing consumption of fossil resources has led to the excessive emission of CO 2 in the atmosphere, which is responsible for serious environmental problems such as the global greenhouse effect. − Therefore, how to reduce the content of CO 2 in the environment has become an urgent research topic for the scientific community. − On the other hand, CO 2 is also an abundant, cheap, nontoxic, and renewable C1 resource, and the transformation of CO 2 into high value-added chemicals is consistent with the development concept of green chemistry. − For example, as a kind of important oxygen–nitrogen heterocyclic equipped with hydrophobic, π–π, and electrostatic interactions, oxazole rings possess some special properties and tremendous application potential in many fields including medicine, pesticide, chemistry, physics, materials science, etc. − In particular, oxazolidinone compounds present effective biological activities by interacting with a variety of enzymes and receptors in organisms. − Therefore, they could be employed as important pharmaceutical intermediates used in the synthesis of many antimicrobial drugs. , However, most reported studies about the cycloaddition of CO 2 with aziridines were associated with homogeneous catalysts. − Although they have excellent catalytic performance, homogeneous catalysts are not easy to separate from the products, which will limit their recyclability and practical applications. Hence, it is necessary and important to find an effective heterogeneous catalyst.…”