Front Cover: A Multitool for Circular Economy: Fast Ring‐Opening Polymerization and Chemical Recycling of (Bio)polyesters Using a Single Aliphatic Guanidine Carboxy Zinc Catalyst (ChemSusChem 12/2023)

The Front Cover shows the material flows in a circular plastics economy and highlights important role of catalysts its future implementation. For this purpose, we present zinc-based catalyst with newly developed hybrid guanidine ligand. In production renewable polyesters our is highly active towards ring-opening polymerization lactide at various reaction conditions, outperforming industrially used toxic tin octanoate. Moreover, it high activity chemical recycling bio-based as well petroleum-based polyesters. By using specific opens up possibility to create new processes for selective from plastic mixtures. This multifunctionality makes mediator facilitates these like traffic circle.. More information can be found Research Article by M. Fuchs et al.