✦ LIBER ✦
Synthetische Verwendung von Epoxynitronen. III. Der anomere Effekt als bestimmender Faktor für die Konformation der 3-Cyano-perhydro-1,2-benzoxazine
✍ Scribed by Martin Riediker; Walter Graf
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- German
- Weight
- 364 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
The anomeric effect as a conformation determining factor for 3‐cyano‐perhydro‐1,2‐benzoxazines
An unusual population of conformer II is found by ^1^H‐NMR. spectroscopy in the conformation equilibrium I⇄ II of 1b (Fig. 3) in which the non‐bonding nitrogen electronpair is anti‐periplanar to the CCN bond. This finding is interpreted in terms of a generalized anomeric effect operating in the α‐cyano‐hydroxylamin‐ether structural unit.