Ring-Opening Polymerization of Cyclohexene Oxide and Cycloaddition with CO[sub.2] Catalyzed by Amine Triphenolate Iron Complexes

A series of novel amine triphenolate iron complexes were synthesized and characterized using UV, IR, elemental analysis, and high-resolution mass spectrometry. These complexes were applied to the ring-opening polymerization (ROP) of cyclohexene oxide (CHO), demonstrating excellent activity (TOF >...

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Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2024-05, Vol.29 (9)
Hauptverfasser: Li, Peng, Li, Sixuan, Dai, Xin, Gao, Shifeng, Song, Zhaozheng, Jiang, Qingzhe
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Sprache:eng
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Zusammenfassung:A series of novel amine triphenolate iron complexes were synthesized and characterized using UV, IR, elemental analysis, and high-resolution mass spectrometry. These complexes were applied to the ring-opening polymerization (ROP) of cyclohexene oxide (CHO), demonstrating excellent activity (TOF > 11050 h[sup.−1]) in the absence of a co-catalyst. In addition, complex C1 maintained the dimer in the presence of the reaction substrate CHO, catalyzing the ring-opening polymerization of CHO to PCHO through bimetallic synergy. Furthermore, a two-component system consisting of iron complexes and TBAB displayed the ability to catalyze the reaction of CHO with CO[sub.2], resulting in the formation of cis-cyclic carbonate with high selectivity. Complex C4 exhibited the highest catalytic activity, achieving 80% conversion of CHO at a CHO/C4/TBAB molar ratio of 2000/1/8 and a CO[sub.2] pressure of 3 MPa for 16 h at 100 °C, while maintaining >99% selectivity of cis-cyclic carbonates, which demonstrated good conversion and selectivity.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29092139