One of the most well-known successful example is the cycloaddition between epoxides and CO2 to afford the propylene carbonate (PC), ethylene carbonate (EC) which are widely used as raw materials.

• 以环氧丙烷(PO)、环氧乙烷（EO）和二氧化碳(CO2)为原料通过环加成反应制备 PC、EC是一条环境友好且原子经济的工艺路线。