✦ LIBER ✦

Contribution of the trityl group to magnetic asymmetry in N-trityl amino acid benzyl esters

✍ Scribed by J. Matsoukas; D. Theodoropoulos

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 275 KB
Volume: 12
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270120702

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The magnetic nonequivalence of the O‐methylene protons of certain N‐trityl amino acid benzyl esters is reported. It is shown that magnetic asymmetry arises from hindered internal rotation of the α‐benzyl group. The degree of proximity of the bulky N‐trityl to the α‐benzyl group, and consequently the degree of free rotation of the latter, is dependent on the nature of the amino acid side‐chain R.

📜 SIMILAR VOLUMES

Contributions of the PO ester and CO tor

Contributions of the PO ester and CO torsion angles of the phosphate group to 31P-nuclear magnetic shielding constant in nucleic acids: Theoretical and experimental study of model compounds

✍ Claude Giessner-Prettre; Bernard Pullman; Fernando Ribas Parado; Doris M. Cheng; 📂 Article 📅 1984 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 685 KB

The magnetic shielding constant of the nucleus of the dimethylphosphate anion is calculated by an eb initio method for different values of the torsion angles about the PO ester bond and different orientations of the methyl groups. The results obtained tend to show that both types of conformational p