Table 1.
Asymmetric β-borylation of 1b with different configurations.
 | |||
| Entry | E/Z ratio of 1b | Yield (%)a | ee (%)b |
| 1 | 4.3:1 | 66 | 78 |
| 2 | 5.7:1 | 65 | 76 |
| 3 | >99:<1 | 68 | 76 |
aIsolated yield. bDetermined by chiral HPLC analysis.
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