Stereoregulation in N-carboxy anhydride polymerization
β Scribed by Inoue, Shohei ;Matsuura, Kazuo ;Tsuruta, Teiji
- Book ID
- 105340466
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2007
- Weight
- 511 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0449-2994
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π SIMILAR VOLUMES
The polymerization was studied in detail using ),-benzyl N-carboxy-L-glutamate anhydride (BGA). Compounds such as tributyltin methoxide, bis(tributyltin)oxide, and N-tributyltin imidazole polymerized BGA while others like dibutyltin dichloride, which are Lewis acids, failed. Polymerization of BGA in
The polymerization of -y-benzyl+glutamate NCA initiated by n-hexylamine in DMF proceeds with two successive propagation r a h whose ratio is about 1.5. The onset of the increase in rate of propagation occurred a t a DP, of 7-14, which waa independent of initiator to anhydride ratio and anhydride con
## Abstract Various kinds of NCA's were polymerized in dimethyl sulfoxide (DMSO). DLβAlanine NCA polymerized at a fast rate without initiator, the rate being represented by __R__~__p__1~ = __k__[M]^1/2^. When the polymerization was carried out in chloroform in the presence of DMSO, the rate was rep
Single-crystal X-ray study T = 288 K Mean '(CΒ±C) = 0.003 A Γ R factor = 0.048 wR factor = 0.159 Data-to-parameter ratio = 12.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.