Table 1.
Tables of 1H NMR chemical shift for the non-substituted pyridones.
| Compound (Solvent) |
Chemical Shift (Multiplicity, J Values in Hz) | |||||
|---|---|---|---|---|---|---|
| NH | H2 | H3 | H4 | H5 | H6 | |
| 2PY (DMSO-d6) |
12.3 (s), 9.05 (s), 7.51 (s) | 7.66 (d, J = 4.32 Hz) | 6.41 (t, J = 6.66 Hz) | 8.29 (d, J = 5.28 Hz) | ||
| 2PY (DMSO-d6) [25] |
11.80 (s), 9.02 (s), 7.57 (s) | 7.69 (q, 1H) | 6.44 (t) | 8.31 (q) | ||
| 4PY (CD3OD) |
8.54 (s) | 6.56 (d, J = 6.53 Hz) | 7.79 (d, J = 5.56 Hz) | |||
| 4PY (CD3OD) [25] |
8.56 (d, J = 1.7 Hz) | 6.58 (d, J = 7.2 Hz) | 7.80 (dd, J = 7.2, 1.7 Hz) | |||
| 6PY (DMSO-d6) |
11.92(s), 7.72 (s) 7.18 (s) | 8.00 (s) | 7.85 (d, J = 9.6 Hz) | 6.32 (d, J = 9.56 Hz) | ||
| 6PY (DMSO-d6) [31] |
11.84 (s), 7.71 (s), 7.18 (s) | 7.99 (d, J = 2.6 Hz) | 7.82–7.87 (dd, J = 2.6 & 9.5 Hz) | 6.32 (d, J = 9.5 Hz) | ||