Polymerization of rac -Lactide Using Schiff Base Aluminum Catalysts: Structure, Activity, and Stereoselectivity
β Scribed by Du, Hongzhi; Pang, Xuan; Yu, Haiyang; Zhuang, Xiuli; Chen, Xuesi; Cui, Dongmei; Wang, Xianhong; Jing, Xiabin
- Book ID
- 118152021
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 278 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0024-9297
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## Abstract A series of enolic Schiff base aluminum(III) complexes LAlR (where L=NNOOβtetradentate enolic Schiff base ligand) containing ligands that differ in their steric and electronic properties were synthesized. Their single crystals showed that these complexes are fiveβcoordinated around the
The polymerization of racemic lactide with a racemic aluminum alkoxide catalyst is reported. Microstructural analysis of the polymer produced with 1 H NMR spectroscopy revealed that an isotactic stereoblock poly(lactic acid) formed, where each enantiomerically pure block contained an average of 11 l