scholarly journals Synthesis, Structures, and Catalytic Activity of Homo- and Heteroleptic Ketoiminate Zinc Complexes in Lactide Polymerization

2018 ◽  
Vol 2018 (36) ◽  
pp. 4014-4021 ◽  
Author(s):  
Phillip Steiniger ◽  
Pascal M. Schäfer ◽  
Christoph Wölper ◽  
Johanna Henkel ◽  
Agnieszka N. Ksiazkiewicz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Zinc Complexes ◽  
Lactide Polymerization

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 Zinc Complexes with Guanidine-Pyridine Hybrid Ligands: Anion Effect and Catalytic Activity

2015 ◽  
Vol 641 (12-13) ◽  
pp. 2147-2156 ◽  
Author(s):  
Artjom Döring ◽  
Ulrich Flörke ◽  
Alexander Hoffmann ◽  
Matthew D. Jones ◽  
Dirk Kuckling ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Zinc Complexes ◽  
Anion Effect ◽  
Hybrid Ligands

Zinc Complexes with Mono- and Polydentate Behaving Guanidine Ligands and Their Application in Lactide Polymerization

2011 ◽  
pp. 169-200 ◽  
Author(s):  
Janna Börner ◽  
Ines dos Santos Vieira ◽  
Ulrich Flörke ◽  
Artjom Döring ◽  
Dirk Kuckling ◽  
...  
Keyword(s):  
Zinc Complexes ◽  
Lactide Polymerization

Zinc complexes containing asymmetrical N,N,O-tridentate ligands and their application in lactide polymerization

2013 ◽  
Vol 42 (46) ◽  
pp. 16334 ◽  
Author(s):  
Bo Gao ◽  
Ranlong Duan ◽  
Xuan Pang ◽  
Xiang Li ◽  
Zhi Qu ◽  
...  
Keyword(s):  
Zinc Complexes ◽  
Tridentate Ligands ◽  
Lactide Polymerization

Magnesium(II) Complexes of the dpp-BIAN Radical-Anion: Synthesis, Molecular Structure, and Catalytic Activity in Lactide Polymerization

2009 ◽  
Vol 2009 (33) ◽  
pp. 4995-5003 ◽  
Author(s):  
Igor L. Fedushkin ◽  
Alexander G. Morozov ◽  
Valentina A. Chudakova ◽  
Georgy K. Fukin ◽  
Vladimir K. Cherkasov
Keyword(s):  
Molecular Structure ◽  
Catalytic Activity ◽  
Radical Anion ◽  
Lactide Polymerization

Bimetallic and trimetallic zinc amino-bis(phenolate) complexes for ring-opening polymerization of rac-lactide

2019 ◽  
Vol 48 (36) ◽  
pp. 13699-13710 ◽  
Author(s):  
Yi Liu ◽  
Louise N. Dawe ◽  
Christopher M. Kozak
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Lactide Polymerization

Di- and trinuclear zinc complexes of an amino-bis(phenolate) ligand show good lactide polymerization activity in both solution and melt.

Aluminum complexes with Schiff base bridged bis(indolyl) ligands: synthesis, structure, and catalytic activity for polymerization of rac-lactide

2019 ◽  
Vol 48 (40) ◽  
pp. 15290-15299 ◽  
Author(s):  
Yun Wei ◽  
Lulu Song ◽  
Ling Jiang ◽  
Zeming Huang ◽  
Shaowu Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Polymerization Catalysts ◽  
Aluminum Complexes ◽  
Lactide Polymerization

A series of aluminum complexes with Schiff base bridged indolyl ligands were synthesized as rac-lactide polymerization catalysts.

Lanthanide Borohydride Complexes of Bulky Guanidinate Ligands [(Me3Si)2NC(N-Cy)2]2Ln(μ-BH4)2Li(THF)2 (Ln = Nd, Sm, Yb): Synthesis, Structure and Catalytic Activity in Lactide Polymerization

2007 ◽  
Vol 2007 (20) ◽  
pp. 3260-3267 ◽  
Author(s):  
Grigorii G. Skvortsov ◽  
Marina V. Yakovenko ◽  
Pascal M. Castro ◽  
Georgy K. Fukin ◽  
Anton V. Cherkasov ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Lactide Polymerization
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