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Half-life (t1/2) for the spontaneous hydrolysis of selected derivatives.
| Compound | t1/2 (h) |
Absorption wavelength (nm)a |
|---|---|---|
| 3a | 9.6 | 280 |
| 3b | 6.1 | 275 |
| 3c | 14.4 | 270 |
| 3d | 6.1 | 315 |
| 3e | 0.4 | 260 |
| 3f | 10.5 | 265 |
| 3g | 1.8 | 270 |
| 3i | 1.8 | 0.270 |
| 3j | 2.5 | 290 |
| 3k | 1.3 | 290 |
| 3l | 3.5 | 295 |
| 4 | 6.4 | 260 |
| 7a | 6.8 | 295 |
| 7b | 5.3 | 280 |
| 7c | 1.5 | 270 |
| 7d | 16.5 | 280 |
| 7e | 5.8 | 285 |
| 9a | 2.1 | 260 |
| 9b | 1.9 | 270 |
| G | 5.8 | 290 |
Absorption used for monitoring spontaneous hydrolysis.
