Table 2.
Chemical shift in ppm (13C NMR) of monothiooxalamides 2(c–h).
| Compound | Chemical shift (δ in ppm) |
|
|---|---|---|
| C=O | C=S 2(c-h) or CH2 (2) | |
| 2 | 167.8 | 43.9 |
| 2c | 165.1 | 190.4 |
| 2e | 164.1 | 188.7 |
| 2g | 162.9 | 188.9 |
| 2h | 162.0 | 188.1 |
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