Citation: Dai Zhong-Ran, Yin Chang-Feng, Wang Cheng, Wu Jin-Cai. Zinc bis-Schiff base complexes: Synthesis, structure, and application in ring-opening polymerization of rac-lactide[J]. Chinese Chemical Letters, ;2016, 27(11): 1649-1654. doi: 10.1016/j.cclet.2016.05.001 shu

Zinc bis-Schiff base complexes: Synthesis, structure, and application in ring-opening polymerization of rac-lactide

a.
State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou 730000, China
b.
The Second Affiliated Hospital of Lanzhou University, Lanzhou 730000, China

Corresponding author: Wu Jin-Cai, wujc@lzu.edu.cn
Received Date: 6 April 2016
Revised Date: 23 April 2016
Accepted Date: 28 April 2016
Available Online: 6 November 2016

Figures(5)

A series of bis-ligated zinc complexes supported by Schiff base ligands were successfully synthesized and characterized by ¹H, ¹³C NMR, elemental analysis, and X-ray crystallography.These zinc complexes can be used as catalysts for the polymerization of rac-lactide in solution as well as in molten lactide.The results show that all catalysts exhibited high catalytic activity and obtained moderate heterotactic PLAs with the expected molecular weight.Complex 1 can catalyze the polymerization of rac-lactide under controllable conditions with living and immortal character in toluene solution.In addition, the steric hindrance and electronic effects has a great influence on the catalytic activity and selectivity of catalysts.
- Rac-lactide,
- Catalyst,
- Zinc complex,
- Ring-opening polymerization
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