Aluminum Salen Complexes and Tetrabutylammonium Salts:  A Binary Catalytic System for Production of Polycarbonates from CO2and Cyclohexene Oxide

2005 ◽  
Vol 44 (5) ◽  
pp. 1433-1442 ◽  
Author(s):  
Donald J. Darensbourg ◽  
Damon R. Billodeaux
Keyword(s):  
Catalytic System ◽  
Cyclohexene Oxide ◽  
Salen Complexes

scholarly journals Ring-Opening Copolymerization of Cyclohexene Oxide and Cyclic Anhydrides Catalyzed by Bimetallic Scorpionate Zinc Catalysts

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1651
Author(s):  
Felipe de la Cruz-Martínez ◽  
Marc Martínez de Sarasa Buchaca ◽  
Almudena del Campo-Balguerías ◽  
Juan Fernández-Baeza ◽  
Luis F. Sánchez-Barba ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Mechanism ◽  
Catalytic System ◽  
Phthalic Anhydride ◽  
Ring Opening ◽  
High Selectivity ◽  
Zinc Complexes ◽  
Cyclohexene Oxide ◽  
Reaction Conditions ◽  
Cyclic Anhydrides

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.

Alternating ring-opening copolymerization of cyclohexene oxide with phthalic anhydride catalyzed by iron(III) salen complexes

2015 ◽  
Vol 23 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Robert Mundil ◽  
Zdeněk Hošt’álek ◽  
Ivana Šeděnková ◽  
Jan Merna
Keyword(s):  
Phthalic Anhydride ◽  
Ring Opening ◽  
Cyclohexene Oxide ◽  
Salen Complexes

Highly Enantioselective Catalytic System for Asymmetric Copolymerization of Carbon Dioxide and Cyclohexene Oxide

2014 ◽  
Vol 20 (39) ◽  
pp. 12394-12398 ◽  
Author(s):  
Yuan-Zhao Hua ◽  
Liu-Jie Lu ◽  
Pei-Jin Huang ◽  
Dong-Hui Wei ◽  
Ming-Sheng Tang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic System ◽  
Cyclohexene Oxide

Cyclohexene Oxide/CO2Copolymerization Catalyzed by Chromium(III) Salen Complexes andN-Methylimidazole:  Effects of Varying Salen Ligand Substituents and Relative Cocatalyst Loading

2004 ◽  
Vol 43 (19) ◽  
pp. 6024-6034 ◽  
Author(s):  
Donald. J. Darensbourg ◽  
Ryan M. Mackiewicz ◽  
Jody L. Rodgers ◽  
Cindy C. Fang ◽  
Damon R. Billodeaux ◽  
...  
Keyword(s):  
Cyclohexene Oxide ◽  
Salen Complexes ◽  
Salen Ligand

Influence of Co(ii) Ionic Liquids Catalytic System for Polycarbonate (CHO/CO2) Synthesis

2015 ◽  
Vol 1095 ◽  
pp. 345-348
Author(s):  
Jing Tian ◽  
Qing Zhang ◽  
Wei Feng Li ◽  
Yue Meng ◽  
Tong Yan ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Ionic Liquids ◽  
Infrared Spectroscopy ◽  
Reaction Time ◽  
Catalytic System ◽  
Reaction Temperature ◽  
Carbon Oxide ◽  
Resonance Spectroscopy ◽  
Cyclohexene Oxide ◽  
Temperature And Pressure

In the report, Co (ii) ionic liquids catalytic system was synthesized and used in the polycarbonate (CHO/CO2) synthesis. The Co (ii) ionic liquids catalytic system was characterized by infrared spectroscopy (IR), and nuclear magnetic resonance spectroscopy (NMR). The influences of different factors, including reaction time, reaction temperature, and pressure of CO2 on the synthesis of polycarbonate (CHO/CO2) were described. The results show that Co (ii) ionic liquids catalytic system could be successfully applied in the copolymerization of carbon oxide (CO2) and cyclohexene oxide (CHO). The optimum synthetic conditions of the polycarbonate, including reaction temperature of 90 °C, reaction time of 8 hours , and CO2 pressure of 25 bar.

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