New data on the polymerization of N-carboxyanhydrides of α-amino acids
✍ Scribed by M. Goodman; E. Peggion
- Book ID
- 118358110
- Publisher
- Elsevier Science
- Year
- 1967
- Weight
- 420 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0032-3950
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📜 SIMILAR VOLUMES
## Abstract **Summary:** The feasibility of a living grafting from polymerization of __α__‐amino acid‐__N__‐carboxyanhydrides (NCA) from a surface using nickel initiators was shown. The polymerization has been carried out on commercially available polystyrene resins as spherical substrates in two d
## Abstract In the polymerizations of alanine, γ‐ethyl glutamate, and leucine __N__‐carboxyanhydrides (NCA's) initiated by tertiary amines and some secondary amines such as __N__‐methyl‐L‐alanine dialkylamide, a stereoselectivity was observed: the polymerization rates of L‐ and D‐NCA's were identic
The NCAs of the N-benzyl derivatives of 8-alanine, j3-nL-aminobutyric acid, and j3nkaminoisobutyric acid (nonplanar six-membered rings) were prepared by reacting the corresponding N-chloroformyl derivatives, obtained on reaction of the N-benzyl amino acids with phosgene, with triethylamine. Contrary
## Abstract Polymerizations of __N__~ε~‐trifluoroacetyl‐L‐lysine __N__‐carboxyanhydride initiated by hexylamine were performed in __N__,__N__‐dimethylformamide with different monomer to initiator ratios and at different temperatures. Poly(__N__~ε~‐trifluoroacetyl‐L‐lysine) samples were characterize