Table 1. Screening for photoxidants.
| ||
| Entry | Photoxidant | 19F NMR Yield (%) |
| 1 | — | 0 |
| 2 | 1,2,4,5-Tetracyanobenzene | 30 |
| 3 | 1,4-Dicyanobenzene | 31 |
| 4 | Acetophenone | 28 |
| 5 | Anthraquinone | 23 |
| 6 | Xanthone | 33 |
| 7 | 9–Fluorenone | 60 |
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