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Enantiomer selection in the nucleophilic addition reaction of optically active amines to α-amino acid N-carboxyanhydrides

✍ Scribed by Yukio Imanishi; Hiroyuki Ohnishi; Yutaka Hashimoto

Book ID
119069741
Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
789 KB
Volume
3
Category
Article
ISSN
0141-8130

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📜 SIMILAR VOLUMES

Enantiomer selection in the addition rea
Enantiomer selection in the addition reaction of optically active 3-methyl-5-substituted hydantoins to N-[(S)-α-methylbenzyl]glycine N-Carboxyanhydride: Model Reaction for the Stereoselective Polymerization of α-amino acid N-carboxyanhydride
✍ Yutaka Hashimoto; Yukio Imanishi 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 813 KB

## Abstract In order to investigate the contribution from the chiral penultimate unit to the enantiomer selection in the activated __N__‐carboxyanhydride (NCA) polymerizations, the addition reaction to __N__‐[(S)‐methylbenzyl]glycine NCA of various α‐amino acid hydantoins activated by the tertiary

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Enantiomer selection in the reaction of N-methyl-α-amino acid N-carboxyanhydride and 3-methyl-5-substituted hydantoin: A model reaction for the stereoselective polymerization of α-amino acid N-carboxyanhydride
✍ Yutaka Hashimoto; Yukio Imanishi 📂 Article 📅 1980 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 677 KB

## Abstract The addition reaction to __N__‐methyl‐(__S__)‐alanine or __N__‐methyl‐(__S__)‐phenylalanine __N__‐car‐boxyanhydride (NCA) of 3‐methyl‐5‐substituted hydantoin (HDT) catalyzed by a tertiary amine was investigated as a model reaction for the propagation reaction of NCA according to the act

Contribution from the chirality of the g
Contribution from the chirality of the growing chain to the enantiomer selectivity in activated-NCA polymerization of α-amino acid N-carboxyanhydride
✍ Yutaka Hashimoto; Yukio Imanishi 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 892 KB

## Abstract As a model compound for the growing chain in the activated‐NCA type of polymerization of α‐amino acid __N__‐carboxyanhydride (NCA), 3‐[ω‐acetylglycyl‐poly(α‐amino acid) acyl]‐α‐amino acid NCA (called the prepolymer) having various degrees of polymerization (DPs) was synthesized by the p

Understanding the Ring-Opening Reaction
Understanding the Ring-Opening Reaction of α-Amino Acid N-Carboxyanhydride in an Amine-Mediated Living Polymerization: A DFT Study
✍ Jun Ling; Yanxin Huang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 251 KB

## Abstract The primary‐amine‐initiated polymerization of __α__‐amino acid __N__‐carboxyanhydride (NCA) is a widely‐used and promising way to synthesize polypeptide‐involved materials with various applications. The nucleophilic attack mechanism, also known as normal amine mechanism of ring opening