Table 3. Mechanistic Insight from O-Alkyl Group Variance of the Oxyboration Reaction.
| entry | R | 1H NMR yield (%)a of 3aa |
|---|---|---|
| 1 | Me | 81 |
| 2 | Et | 68 |
| 3 | iPr | 60 |
| 4 | tBu | 0 |
a
Yield determined relative to mesitylene internal standard.
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