Table 11.
DcA of Protected α-Hydroxy Allyl Vinyl Carbonates
 | |||||
|---|---|---|---|---|---|
| entry | SM | n | yield (%) | dr | ee (major) |
| 1 | 39 | 1 | quant. | 2.5:1 | 92% |
| 2 | 38 | 2 | quant. | 11:1 | >99% |
| 3 | 39 | 2 | quant. | 11:1 | >99% |
| 4 | 38 | 3 | quant. | 50:1 | >99% |
| 5 | 39 | 3 | 30% | 50:1 | >99% |
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