Highly heteroselective ring-opening polymerization of racemic lactide initiated by divalent ytterbium complexes bearing amino bis(phenolate) ligands

2012 ◽  
Vol 48 (78) ◽  
pp. 9780 ◽  
Author(s):  
Sheng Yang ◽  
Zhu Du ◽  
Yong Zhang ◽  
Qi Shen
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Ytterbium Complexes ◽  
Phenolate Ligands

Titanium complexes bearing amine bis(phenolate) ligands: Synthesis, structure and catalysis in ring-opening polymerization of lactide

2016 ◽  
Vol 31 (9) ◽  
pp. e3688
Author(s):  
Baolong Wang ◽  
Jianing Zhang ◽  
Huanqin Zhao ◽  
He Huang ◽  
Junpei Zheng ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Titanium Complexes ◽  
Phenolate Ligands

Immortal ring-opening polymerization of lactides with super high monomer to catalyst ratios initiated by zirconium and titanium complexes containing multidentate amino-bis(phenolate) ligands

2017 ◽  
Vol 41 (13) ◽  
pp. 5669-5677 ◽  
Author(s):  
Baolong Wang ◽  
Huanqin Zhao ◽  
Liying Wang ◽  
Junmin Sun ◽  
Yongfeng Zhang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Titanium Complexes ◽  
Highly Active ◽  
Zirconium Complexes ◽  
Phenolate Ligands

Zirconium and titanium complexes containing amino-bis(phenolate) ligands were prepared. These complexes are highly active initiators for the ring-opening polymerization of lactide. And two zirconium complexes are highly active and excellent catalysts for immortal ring-opening polymerization of lactide.

scholarly journals Synthesis of aluminum complexes supported by 2-(1,10-phenanthrolin-2-yl)phenolate ligands and their catalysis in the ring-opening polymerization of cyclic esters

RSC Advances ◽  
2017 ◽  
Vol 7 (44) ◽  
pp. 27177-27188 ◽  
Author(s):  
Xiang-Xin Zheng ◽  
Zhong-Xia Wang
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Block Copolymerization ◽  
Cyclic Esters ◽  
Aluminum Complexes ◽  
Phenolate Ligands

Phenanthroline-phenolate based N,N,O-chelate aluminum complexes were demonstrated to catalyze the ROP of ε-caprolactone, rac-lactide, and rac-β-butyrolactone, as well as their block copolymerization.

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