It is highly demanded to reduce the environmental pollution related to the disposal of end-of-life plastics. Polycarbonates derived from the copolymerization of CO2 and epoxides has attracted much attention since...
The production of cyclic carbonates and (or) polycarbonates from the coupling of carbon dioxide (CO 2 ) with epoxides is a practical strategy for CO 2 fixation. Chemically recycling of the polycarbonates is also urgently needed for sustainable development of plastics. Here a dinuclear βdiketiminato (BDI) methyl zinc complex((BDI-ZnMe) 2 , 1) is reported to achieve not only selective cyclic carbonates from cycloaddition of CO 2 to meso-CHO in the presence of cocatalyst, but also effective depolymerization of PCHC into trans-CHC. The trans-CHC can be further transformed into cis-CHC, thus demonstrating great application potentials of this strategy in CO 2 fixation and chemical recycling of plastics.
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