Table 4.
Time optimization for the deprotection reaction of 14a using TG-NCO-SH reagent.
| Entry | Time (h) | Yield of 9a (%)a |
|---|---|---|
| 1 | 2 | 40 |
| 2 | 6 | 55 |
| 3 | 24 | 93 |
a
Calculated by HPLC.
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