Unusual spectroscopic and conformational properties of some spirocyclic oxaziridines
✍ Scribed by Jeffrey Aubé*; Yuguang Wang
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 142 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The proton that bears a 1,3-diaxial relationship to the substituted nitrogen atom of some chiral oxaziridines appears in the NMR spectrum at unusually high field. This observation indicates that an unusual rotamer is substantially populated in these systems.
We and others have been interested in the conformational properties of chiral oxaziridines, especially those
📜 SIMILAR VOLUMES
## 4-Cyanopyridine -2,6-d 2 (5a-2,6-d 2 ), 3-cyanopyridine-2,6-d 2 (5b-2,6-d 2 ), and 2-cyanopyridine-4,6-d 2 (5c-4,6-d 2 ) were synthesized from the corresponding 2-, 3-or 4-pyridinecarboxylic acid N-oxides. These dideuterated products were characterized by their mass and NMR spectra.
## Abstract magnified image 2‐Trideuteriopyridine‐4,6‐d~2~ (1‐4,6‐d~2~), 3‐methylpyridine‐2,6‐d~2~ (2‐2,6‐d~2~), 3‐methylpyridine‐2,4,6‐d~3~ (2‐2,4,6‐d~3~), and 4‐trideuteriopyridine‐2,6‐d~2~ (3‐2,6‐d~2~) were synthesized from the appropriate 2‐, 3‐, or 4‐methylpyridine N‐oxides. These deuterated