Free radical ring-opening polymerization of 4,7-dimethyl-2-methylene-1,3-dioxepane and 5,6-benzo-2-methylene-1,3-dioxepane
✍ Scribed by Bailey, William J.; Ni, Zhende; Wu, Shang Ren
- Book ID
- 111898829
- Publisher
- American Chemical Society
- Year
- 1982
- Tongue
- English
- Weight
- 477 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0024-9297
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## Abstract 2‐Methylene‐1,3‐dioxepane 6 polymerized with a quantitative ring opening to form poly‐ϵ‐caprolactone via a free radical mechanism. On the other hand, 2‐methylene‐1,3‐dioxolane (ethylene ketene acetal) 4 and 2‐methylene‐1,3‐dioxane 5, under the same conditions, generated polymers with mi
## Abstract New bicyclic 2‐methylene‐1,3‐dioxepanes, were synthesized starting from 2‐bromomethyl‐5,6‐dihydroxy‐1,3‐dioxepanes. The structure of the 2‐methylene‐1,3‐dioxepanes was confirmed by elemental analysis, IR, ^1^H NMR and ^13^C NMR spectroscopy. Radical polymerization of 2‐methylene‐1,3‐dio