The mass fragmentation of 4-arylaminocytosioe derivatives was investigated and it was found that the ortho effect is mainly responsible for the strong stabilization of even-electron ions formed during fragmentation. The ortho effect in this class of compounds completely eliminates other possible fra
Stabilization of even-electron ions by cyclization of substituents on 3N- and 4N-nitrogens in 4N-substituted cytosines
โ Scribed by Adam S. Plaziak; Lech Celewicz; Jaroslaw Spychala; Krzysztof Golankiewicz
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 259 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1076-5174
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Various 4-and 4'-substitued Pans-N-benzylideneanilines were synthesized and their 'H N M R spectra recorded at 30ยฐC in DMSO-d, and acidic media (TFA-d and D1S04). The effects of substituents on the chemical shifts of H-a (proton on carbon of imme group) and H-2' (protons on benzaldehyde ring ortho t