 |
|
| Correlation Table | Common Splitting | Interpret NMR |
| Give Structure | Next Example | Return to NMR Home |
From the molecular formula, the compound has "5 degrees of unsaturation" (four double bonds or rings), suggesting the possibility of an aromatic compound (benzene has four degrees of unsaturation) attached to another unsaturated center.
Click here for a review on proton NMR.
Click here to view a 1H NMR correlation table.
The proton NMR has three peaks; a singlet at 
2.2 (3H), and a singlet at 10 (1H) and two doublets centered around 7.6. The doublets centered at 7.6 are in the aromatic region; the fact that two doublets are observed (2H each) suggests a 1,4-disubstituted aromatic compound. The peak at 2.2 is in the region for a methyl group adjacent a mildly electronegative group. The singlet at 10 is in the region observed for aldehydic protons. The presence of two doublets in the aromatic region is highly characteristic of 1,4-disubstitution.
