Redox Switchable Copolymerization of Cyclic Esters and Epoxides by a Zirconium Complex
2016
A zirconium precatalyst, (salfan)Zr(OtBu)2 (salfan = 1,1′-di(2-tert-butyl-6-N-methylmethylenephenoxy)ferrocene), shows activity for the redox-controlled block copolymerization of l-lactide and cyclohexene oxide. The role of the oxidant is examined, and several diblock (AB and BA) and triblock copolymers (ABA and BAB) were synthesized and characterized.
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