2019 Volume 48 Issue 5 Pages 479-482
Dinuclear Co–salcy complexes bearing a dibenzofuran linker were explored for the copolymerizations of epoxides with cyclic anhydrides (CAs) or carbon dioxide [salcy = trans-N,N′-bis(salicylidene)-1,2-cyclohexanediamine]. It was found that the absolute configuration of the two Co–salcy moieties and the substituents on the salcy ligand greatly affect their catalyst activity. The optimized heterochiral dinuclear Co–salcy complex demonstrated one of the highest catalyst activities among the previously reported metal catalysts for the epoxide/CA copolymerization.
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