Ring-opening polymerization of 2-phenyl-1,3,2-dioxaphosphorinane initiated with new catalyst system using a halobenzene and nickel(II) bromide
✍ Scribed by S. Kobayashi; J. Kadokawa
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 617 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0323-7648
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✦ Synopsis
Abstract
Ring‐opening polymerization of 2‐phenyl‐1,3,2‐dioxaphosphorinane (a six‐membered cyclic phosphonite, 4) has been initiated with a new catalyst system of a halobenzene and NiBr~2~. The polymerization proceeded in a living nature to produce poly(phosphinate) consisting exclusively of a “normal” unit. The kinetic analysis of the polymerization of 4 initiated with the catalyst system was successfully carried out. The rate constant of propagation (k~p~) was much lower than that initiated with MeI. Linear and star‐shaped telechelic polymers were synthesized using di‐, tri‐, tetra‐, and hexa‐ halobenzenes as a catalyst component.