## Abstract **Summary:** Novel polyester and copolyesters have been prepared by anionic ring‐opening polymerization of racemic 4‐alkyloxycarbonyl‐3,3‐dimethyl‐2‐oxetanones that had been synthesized in five steps from diethyl oxalpropionate used as chemical precursor. The anionic polymerizations, re
Anionic Ring-Opening Polymerization of β-Alkoxymethyl-Substituted β-Lactones
✍ Scribed by Adamus, Grażyna; Kowalczuk, Marek
- Book ID
- 120568203
- Publisher
- American Chemical Society
- Year
- 2008
- Tongue
- English
- Weight
- 220 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1525-7797
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## Abstract Poly(β‐hydroxyalkanoate)s (PHAs) are a class of aliphatic polyesters that can be efficiently synthesized by ring‐opening polymerization (ROP) of β‐lactones. The case of chiral racemic β‐substituted β‐lactones is particularly appealing since these monomers open the way to original tactic
## Abstract The synthesis of poly(__β__‐alanine) by __Candida antarctica__ lipase B immobilized as novozyme 435 catalyzed ring‐opening of 2‐azetidinone is reported. After removal of cyclic side products and low molecular weight species pure linear poly(__β__‐alanine) is obtained. The formation of t