Table 3. Catalytic Performance of PN- and PP-Based Mn(I) Methyl Complexes in the Hydroboration of 4-Chlorostyrene.
| catalyst | conversion [%] | A/B |
|---|---|---|
| PN1 | 41 | >99:1 |
| PN2 | 67 | >99:1 |
| PN3 | 22 | >99:1 |
| PN4 | 16 | 97:3 |
| PN5 | 99 | >99:1 |
| PN6 | 93 | >99:1 |
| PN7 | 43 | 99:1 |
| PN8 | 57 | >99:1 |
| PP3b | >99 | 97:3 |
| PP4 | 80 | >99:1 |
| PP5 | 87 | >99:1 |
| none | 6 | >99:1 |
a
Reaction conditions: 4-chlorostyrene (1.10 mmol, 1.00 equiv), pinacolborane (1.12 mmol, 1.02 equiv), catalyst (0.011 mmol, 1.00 mol %), THF (2 M), 18 h, 70 °C; conversion, A:B ratio detected by GC-MS.
b
Data taken from ref (19).