Study on preparation of cyclic carbonates catalyzed by metalloporphyrin-based porous polymers.

This article reviews the preparation of cyclic carbonates from alkylene oxides and CO₂ catalyzed by metalloporphyrin polymers. It is found that metalloporphyrin-based porous polymers have high specific surface area, central metal of the porphyrin ring and nucleophilicity in small molecule polymerized monomers, which are the key points for efficiently catalyzing the cycloaddition reaction of epoxides and CO₂ under mild conditions. However, currently synthesized metalloporphyrin polymers have some problems, such as easy pore size, unstable structure, and difficulty in adapting to large-sized epoxides. In the future, we should focus on designing and preparing dual-active site metalloporphyrin-based porous polymers with small steric hindrance, stable performance, and a large number of Lewis acid-base highly active centers, which is the direction we need to research in the future. [ABSTRACT FROM AUTHOR]