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- Title
Ring-Opening Copolymerization of Cyclohexene Oxide and Cyclic Anhydrides Catalyzed by Bimetallic Scorpionate Zinc Catalysts.
- Authors
de la Cruz-Martínez, Felipe; Martínez de Sarasa Buchaca, Marc; del Campo-Balguerías, Almudena; Fernández-Baeza, Juan; Sánchez-Barba, Luis F.; Garcés, Andrés; Alonso-Moreno, Carlos; Castro-Osma, José A.; Lara-Sánchez, Agustín; Balart Gimeno, Rafael Antonio; Compañ Moreno, Vicente; Díez-Pascual, Ana María; Serra, Angels; Velasco, Rebeca Hernandez; Mecerreyes, David
- Abstract
The catalytic activity and high selectivity reported by bimetallic heteroscorpionate acetate zinc complexes in ring-opening copolymerization (ROCOP) reactions involving CO2 as substrate encouraged us to expand their use as catalysts for ROCOP of cyclohexene oxide (CHO) and cyclic anhydrides. Among the catalysts tested for the ROCOP of CHO and phthalic anhydride at different reaction conditions, the most active catalytic system was the combination of complex 3 with bis(triphenylphosphine)iminium as cocatalyst in toluene at 80 °C. Once the optimal catalytic system was determined, the scope in terms of other cyclic anhydrides was broadened. The catalytic system was capable of copolymerizing selectively and efficiently CHO with phthalic, maleic, succinic and naphthalic anhydrides to afford the corresponding polyester materials. The polyesters obtained were characterized by spectroscopic, spectrometric, and calorimetric techniques. Finally, the reaction mechanism of the catalytic system was proposed based on stoichiometric reactions.
- Subjects
ZINC catalysts; ANHYDRIDES; COPOLYMERIZATION; CYCLOHEXENE; ZINC compounds; PHTHALIC anhydride; POLYESTERS
- Publication
Polymers (20734360), 2021, Vol 13, Issue 10, p1651
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13101651