Di-nuclear zinc complexes containing tridentate imino-benzotriazole phenolate derivatives as efficient catalysts for ring-opening polymerization of cyclic esters and copolymerization of phthalic anhydride with cyclohexene oxide

2015 ◽  
Vol 54 (5) ◽  
pp. 714-725 ◽  
Author(s):  
Chin-Hsiang Chang ◽  
Hui-Ju Chuang ◽  
Ting-Yi Chen ◽  
Chen-Yu Li ◽  
Chia-Her Lin ◽  
...  
Keyword(s):  
Phthalic Anhydride ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Cyclohexene Oxide ◽  
Cyclic Esters

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.

Hybrid Scorpionate/Cyclopentadienyl Magnesium and Zinc Complexes: Synthesis, Coordination Chemistry, and Ring-Opening Polymerization Studies on Cyclic Esters

2010 ◽  
Vol 49 (6) ◽  
pp. 2859-2871 ◽  
Author(s):  
Andrés Garcés ◽  
Luis F. Sánchez-Barba ◽  
Carlos Alonso-Moreno ◽  
Mariano Fajardo ◽  
Juan Fernández-Baeza ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Cyclic Esters

scholarly journals Synthesis and structures of mono- and di-nuclear aluminium and zinc complexes bearing α-diimine and related ligands, and their use in the ring opening polymerization of cyclic esters

2020 ◽  
Vol 49 (5) ◽  
pp. 1456-1472 ◽  
Author(s):  
Lin Xiao ◽  
Yanxia Zhao ◽  
Sijie Qiao ◽  
Ziyue Sun ◽  
Orlando Santoro ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Cyclic Esters

Multi-metallic complexes (of Al, Zn) derived from imine-based ligands effectively operate as catalysts for the ring opening polymerization (ROP) of ε-caprolactone (ε-CL), δ-valerolactone (δ-VL) and co-polymerization thereof.

Mono-, di- and tetra-zinc complexes derived from an amino-benzotriazole phenolate ligand containing a bulkier N-alkyl pendant arm: synthesis, structure and catalysis for ring-opening polymerization of cyclic esters

2015 ◽  
Vol 44 (27) ◽  
pp. 12401-12410 ◽  
Author(s):  
Jun-Han Wang ◽  
Chen-Yen Tsai ◽  
Jing-Kai Su ◽  
Bor-Hunn Huang ◽  
Chu-Chieh Lin ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Cyclic Esters ◽  
Pendant Arm ◽  
Active Initiator

Tetranuclear alkoxide 3 with a saddle-shaped Zn4O4 conformation was an active initiator for living ROP of ε-caprolactone and β-butyrolactone.

Synthesis of Lewis Acidic, Aromatic Aminotroponiminate Zinc Complexes for the Ring-Opening Polymerization of Cyclic Esters

2018 ◽  
Vol 57 (16) ◽  
pp. 9931-9940 ◽  
Author(s):  
Sebastian Kernbichl ◽  
Marina Reiter ◽  
Daniel H. Bucalon ◽  
Philipp J. Altmann ◽  
Alexander Kronast ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Cyclic Esters
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