Zn(salphen) complexes are reported as effective, cheap, robust and relatively green catalysts for the cycloaddition of carbon dioxide to terminal epoxides to afford cyclic carbonates in good yields.
Efficient carbonate synthesis under mild conditions through cycloaddition of carbon dioxide to oxiranes using a Zn(salphen) catalyst
Chem. Commun. 2010, 46, 4580-4582.