scholarly journals Uranium-mediated ring-opening polymerization of ε-caprolactone: a comparative study

2015 ◽  
Vol 5 (12) ◽  
pp. 5110-5119 ◽  
Author(s):  
Isabell S. R. Karmel ◽  
Maxim Khononov ◽  
Matthias Tamm ◽  
Moris S. Eisen
Keyword(s):  
Catalytic Activity ◽  
Comparative Study ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Uranium Complexes ◽  
Uranium Complex

This study shows and compares the catalytic activity and the mechanism of the uranium complexes [(ImDippN)2U(NMeEt)2] (3), [(C5Me5)2U(NMe2)2] (4) and [(C5Me5)2U(NCMePh)2] (5) in the ring-opening polymerization of ε-caprolactone, among which the bis(imidazolin-2-iminato) uranium complex3displayed the highest catalytic activity.

Organocalcium Compounds with Catalytic Activity for the Ring-Opening Polymerization of Lactones

2003 ◽  
Vol 2003 (18) ◽  
pp. 3432-3439 ◽  
Author(s):  
Matthias Westerhausen ◽  
Stefan Schneiderbauer ◽  
Alexander N. Kneifel ◽  
Yvonne Söltl ◽  
Peter Mayer ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ring Opening ◽  
Ring Opening Polymerization

scholarly journals Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: a cooperation effect

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 40690-40696
Author(s):  
Tzu-Fang Wang ◽  
Someswara Rao Kosuru ◽  
Shu-Chun Yu ◽  
Yung-Chi Chang ◽  
Hsin-Yu Lai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Pot

Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only.

Molecular Structure–Catalytic Activity Relationship in the Ring-Opening Polymerization of (Macro)lactones

2016 ◽  
Vol 49 (3) ◽  
pp. 796-806 ◽  
Author(s):  
Mark P. F. Pepels ◽  
Inge Hermsen ◽  
Geert J. Noordzij ◽  
Rob Duchateau
Keyword(s):  
Molecular Structure ◽  
Catalytic Activity ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Activity Relationship

Amido rare-earth(iii) and Ca(ii) complexes coordinated by tridentate amidinate ligands: synthesis, structure, and catalytic activity in the ring-opening polymerization of rac-lactide and ε-caprolactone

2020 ◽  
Vol 44 (19) ◽  
pp. 7811-7822
Author(s):  
Natalia Yu. Rad’kova ◽  
Tatyana A. Kovylina ◽  
Andrei S. Shavyrin ◽  
Anton V. Cherkasov ◽  
Georgy K. Fukin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Ring Opening ◽  
Ring Opening Polymerization

Y(iii), Sm(iii) and Ca(ii) monoamido complexes coordinated by tridentate amidinate ligand were synthesized and evaluated as initiators of ring-opening polymerization of rac-lactide and ε-caprolactone.

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