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Scope of phosphines
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| Entry | Phosphine | k1,obs (M−1s−1)a | k2,obs × 103 (s−1)a | Yield (%)b |
| 1 | 2a | 3.68 ± 0.03 | - | 91 |
| 2 | 2b | 6.1 ± 0.7 | 4.1 ± 0.1 | 93 |
| 3 | 2c | - | - | NRc |
| 4 | 2d | - | 1.56 ± 0.02 | 96 |
| 5 | 2e | - | 1.31 ± 0.01 | 89 |
| 6 | 2f | - | 0.56 ± 0.01 | 62 |
Monitored by 1H NMR.
NMR yield at 30 min.
No reaction during the course of 30 min.
