Journal
MACROMOLECULAR RESEARCH
Volume 23, Issue 2, Pages 161-166Publisher
POLYMER SOC KOREA
DOI: 10.1007/s13233-015-3022-4
Keywords
polyesters; iron salen complexes; catalysis; anhydride epoxide copolymerization
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Funding
- specific university research (MSMT) [20/2014]
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A series of three iron(III) salen complexes was synthesized and successfully used for copolymerization of cyclohexene oxide and phthalic anhydride. Catalytic systems based on an iron(III) salen complex in combination with 4-(dimethylamino) pyridine (DMAP) or bis(triphenylphosphine) iminium chloride (PPNCl) cocatalysts produced purely alternating copolymer with narrow molar mass distributions. [N, N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexylenediamine] iron(III) chloride was the most active complex and afforded the copolymer even in the absence of the cocatalysts. Other iron complexes were completely inactive in absence of a cocatalyst. Both DMAP and PPNCl alone were able to catalyze the copolymerization, affording purely alternating copolymers in good yields.
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