The negative-ion mass spectra of some pyridines, pyrazines and their N-oxides are reported. All of the compounds examined fragment by generation of CN-ions. The alkylated derivatives readily form [M -11 anions. Most of the N-oxides yield 0and OH-ions. Polar substituents control the fragmentation pro
The mass spectra of cinnolines and their N-oxides
โ Scribed by M. H. Palmer; E. R. R. Russell; W. A. Wolstenholme
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 483 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1076-5174
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Mass spectra of picolinic, nicotinic and isonicotinic acids and of their respective N-oxides are presented. Picolinic acid and its N-oxide demonstrate the facile loss of carbon dioxide and low-intensity molecular ions. Fragmentation is relatively simple. Nicotinic and isonicotinic acids show very si
Electron impact positive ion spectra of ten substituted or annelated benzofurazan-l-oxides are reported. While most of the molecular ions lose either NO' + NO', or NO' + CO, some also lose CO as an initial fragment. One of the fragmentation pathways for 4-methylbenzofurazan-l-oxides involves initial