Stereoselective ring-opening polymerization of rac-lactides catalyzed by titanium complexes containing N,N-bidentate phenanthrene derivatives

Magnesium complexes based on N,N-bidentate phenanthrene derivatives derived from Schiff bases were synthesized and investigated as catalysts for rac-lactide polymerization.

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Ring-Opening Polymerization of Lactide Using Aluminum Salen-Type Initiators

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.915-916.713 ◽

2014 ◽

Vol 915-916 ◽

pp. 713-716

Author(s):

Qing Zhang ◽

Jing Tian ◽

Zhi Qi Cao ◽

Ru Xia Xu ◽

Zhen Zhen Sun ◽

...

Keyword(s):

Nuclear Magnetic Resonance ◽

Infrared Spectroscopy ◽

Reaction Time ◽

Magnetic Resonance ◽

Schiff Bases ◽

Reaction Temperature ◽

Ring Opening ◽

Ring Opening Polymerization ◽

Resonance Spectroscopy ◽

Aluminum Complex

In this investigation, Schiff bases aluminum complex was synthesized and used as the initiator in the polymerization of D,L-lactide. The aluminum complex was characterized by infrared spectroscopy (IR), and nuclear magnetic resonance spectroscopy (NMR). The influences of different factors, including reaction time, reaction temperature, and the ratio of D, L-lactide/Al3+ on the synthesis of polylactide were described. The results showed that Schiff bases aluminum complex could be successfully applied in the ring opening polymerization. The optimum condition of the ring opening polymerization of D,L-lactide, which included D,L-lactide/Al3+ (mol/mol) ratio of 250, reaction temperature of 120 °C, and reaction time of 16 hours.

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Ring-opening polymerization of lactones by mono(cyclopentadienyl)titanium complexes

Macromolecular Symposia ◽

10.1002/masy.19950950117 ◽

1995 ◽

Vol 95 (1) ◽

pp. 195-202 ◽

Cited By ~ 5

Author(s):

Jun Okuda ◽

Thomas Kleinhenn ◽

Peter König ◽

Insa Taden ◽

Silvana Ngo ◽

...

Keyword(s):

Ring Opening ◽

Ring Opening Polymerization ◽

Titanium Complexes

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Synthesis of biodegradable and biorenewable polylactides initiated by aluminum complexes bearing m-xylylenediamine derivatives via the ring-opening polymerization of lactides

New Journal of Chemistry ◽

10.1039/c9nj01268k ◽

2019 ◽

Vol 43 (18) ◽

pp. 6943-6950 ◽

Cited By ~ 2

Author(s):

Dongni Li ◽

Bo Gao ◽

Qian Duan

Keyword(s):

Ring Opening ◽

Ring Opening Polymerization ◽

Aluminum Complexes ◽

Lactide Polymerization

Aluminum complexes derived from m-xylylenediamine were synthesized and investigated as initiators for l-lactide and rac-lactide polymerization.

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Titanium complexes containing new dianionic tetradentate [ONNO]-type ligands with benzyl substituents on bridging nitrogen atoms: Syntheses, X-ray structures, and catalytic activities in ring opening polymerization of lactide

Journal of Organometallic Chemistry ◽

10.1016/j.jorganchem.2009.06.037 ◽

2009 ◽

Vol 694 (21) ◽

pp. 3409-3417 ◽

Cited By ~ 29

Author(s):

So Han Kim ◽

Junseong Lee ◽

Da Jung Kim ◽

Jung Hee Moon ◽

Sungwoo Yoon ◽

...

Keyword(s):

Ring Opening ◽

Ring Opening Polymerization ◽

Titanium Complexes ◽

X Ray ◽

Catalytic Activities

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The effect of steric changes on the isoselectivity of dinuclear indium catalysts for lactide polymerization

Dalton Transactions ◽

10.1039/c5dt00222b ◽

2015 ◽

Vol 44 (13) ◽

pp. 6126-6139 ◽

Cited By ~ 33

Author(s):

K. M. Osten ◽

D. C. Aluthge ◽

P. Mehrkhodavandi

Keyword(s):

Ring Opening ◽

Ring Opening Polymerization ◽

Lactide Polymerization

Functionalized diaminophenolates as ligands for dinuclear indium catalysts were investigated in the ring-opening polymerization of lactide. An increase in the steric bulk of the ligand phenolates decreases the selectivity of the catalysts due to catalyst dissociation during polymerization.

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