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| entry | alteration | yield (%) |
|---|---|---|
| 1 | none | 52 |
| 2 | 18 h | 58 |
| 3 | air instead of argon | -- |
| 4 | AQ instead of PQ | 19 |
| 5 | no light | -- |
| 6 | no photocatalyst | -- |
| 7 | no Selectfluor | -- |
Isolated yield.
GC yield.
