scholarly journals Pyrazole Supported Zinc(II) Benzoates as Catalysts for the Ring Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide

Catalysts ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 17 ◽  
Author(s):  
Mapudumo Lephoto ◽  
Koji Nakano ◽  
Divambal Appavoo ◽  
Bernard Owaga ◽  
Kyoko Nozaki ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Cyclohexene Oxide

scholarly journals Polynuclear alkoxy–zinc complexes of bowl-shaped macrocycles and their use in the copolymerisation of cyclohexene oxide and CO2

2019 ◽  
Vol 48 (15) ◽  
pp. 4887-4893 ◽  
Author(s):  
James R. Pankhurst ◽  
Shyeni Paul ◽  
Yunqing Zhu ◽  
Charlotte K. Williams ◽  
Jason B. Love
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Zinc Complexes ◽  
Cyclohexene Oxide

Tri- and tetranuclear macrocyclic zinc alkoxides act as catalysts for the ring-opening polymerisation of epoxides and carbon dioxide.

scholarly journals Ti(IV)–Tris(phenolate) Catalyst Systems for the Ring-Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide

2020 ◽  
Vol 39 (9) ◽  
pp. 1619-1627 ◽  
Author(s):  
Sumesh K. Raman ◽  
Arron C. Deacy ◽  
Leticia Pena Carrodeguas ◽  
Natalia V. Reis ◽  
Ryan W. F. Kerr ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Cyclohexene Oxide ◽  
Catalyst Systems

Chromium Diamino-bis(phenolate) Complexes as Catalysts for the Ring-Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide

2020 ◽  
Vol 59 (20) ◽  
pp. 15375-15383
Author(s):  
Kenson Ambrose ◽  
Jennifer N. Murphy ◽  
Christopher M. Kozak
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Cyclohexene Oxide

Ring-opening copolymerisation of cyclohexene oxide and carbon dioxide catalysed by scorpionate zinc complexes

2016 ◽  
Vol 7 (42) ◽  
pp. 6475-6484 ◽  
Author(s):  
Javier Martínez ◽  
José A. Castro-Osma ◽  
Agustín Lara-Sánchez ◽  
Antonio Otero ◽  
Juan Fernández-Baeza ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Zinc Complexes ◽  
Cyclohexene Oxide

New bimetallic heteroscorpionate zinc complexes have been developed and used as efficient catalysts for the synthesis of poly(cyclohexene carbonate).

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.

scholarly journals Low-temperature and purification-free stereocontrolled ring-opening polymerisation of lactide in supercritical carbon dioxide

2020 ◽  
Vol 22 (7) ◽  
pp. 2197-2202 ◽  
Author(s):  
Simon P. Bassett ◽  
Andrew D. Russell ◽  
Paul McKeown ◽  
Isabel Robinson ◽  
Thomas R. Forder ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Supercritical Carbon Dioxide ◽  
Ring Opening ◽  
Solvent Free ◽  
Free Ring ◽  
First Time ◽  
Supercritical Carbon

A stereoselective, solvent-free ring-opening polymerisation (ROP) of lactide (LA) in supercritical carbon dioxide (scCO2) is reported for the first time.

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