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Polymerization of DL-Phenylalanine N-Carboxyanhydride by Multifunctional Pyridine Derivatives

✍ Scribed by Imanishi, Yukio; Nagaoka, Shoji; Higashimura, Toshinobu


Book ID
121800360
Publisher
Nature Publishing Group
Year
1973
Tongue
English
Weight
745 KB
Volume
4
Category
Article
ISSN
0032-3896

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📜 SIMILAR VOLUMES


Polymerization of L- and DL-phenylalanin
✍ Yukio Imanishi; Kazuya Kugimiya; Toshinobu Higashimura 📂 Article 📅 1973 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 617 KB

## Abstract Polymerizations of L‐ and DL‐phenylalanine __N__‐carboxyanhydride in nitrobenzene by poly (__N__‐methyl‐L‐alanine) of varying degrees of polymerization (__n__ = 1–30) were investigated. Poly(__N__‐methyl‐L‐alanine) was prepared by the polymerization of __N__‐methyl‐L‐alanine NCA with __

Polymerization of amino acid derivatives
✍ Masahiko Sisido; Yukio Imanishi; Seizo Okamura 📂 Article 📅 1970 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 410 KB

## Abstract The polymerization of DL‐β‐phenylalanine __N__‐carboxyanhydride (NCA) initiated by poly(__N__‐benzylglycine)diethylamide (DEA) and poly(__N__‐methyl‐DL‐alanine)DEA has been investigated. As previously reported, polysarcosine DEA, poly‐__N__‐ethylglycine DEA, and poly‐__N__‐__n__‐propylg

Polymerization of optical isomers of phe
✍ Yukio Imanishi; Kazuya Kugimiya; Toshinobu Higashimura 📂 Article 📅 1974 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 400 KB

## Abstract In the polymerization of phenylalanine __N__‐carboxyanhydride (NCA) using poly(__N__‐methyl‐L‐or DL‐alanine) diethylamide as initiator, the polymerization rate was L‐NCA ≃ D‐NCA > DL‐NCA. This is a new type of selective polymerization and indicates the incompleteness of earlier investig

Polymerization of optical isomers of phe
✍ Yutaka Hashimoto; Akimasa Aoyama; Yukio Imanishi; Toshinobu Higashimura 📂 Article 📅 1976 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 705 KB

## Abstract In the polymerization of phenylalanine NCA initiated by some secondary amines, the two enatimorphs of phenylalanine NCA were polymerized with the same rate, which was almost twice as high, as that found for the racemic mixture. This stereoselectivity was observed only when the polymeriz