Radical trapping experiments.
| |||
|---|---|---|---|
| Entry | Conditions | Yielda/% | |
| 2b | 4b | ||
| 1 | 2.5 mol% [RhCl(cod)]2 | 19 | 52 |
| 5.0 mol% depe, hν (365 nm) | |||
| 2 | hν (365 nm) | 0 | 96b |
| 3 | 2.5 mol% [RhCl(cod)]2 | 0 | 0 |
| 5.0 mol% depe | |||
NMR yield.
The combined yield of 4b and p-methylbenzoic acid, which was generated by the reaction of 4b and HBpin under the reaction conditions.