Table 1.
Entry | Reducing Conditions | Sec Intermediate | Electrophile | Notes |
---|---|---|---|---|
1 | LiBEt3H (ref. 17) | Trace product formed. Selenol intermediate readily re-formed 1 under the basic reaction conditions. | ||
2 | In(I)I (refs. 21 & 22) | No product formed. In(III)I diorganyl selenoate unreactive to the tertiary alkyl chloride electrophile. | ||
3a | Zn/HCl (refs. 15 & 16) | 84% Fmoc-Sec(Xan)-OH product isolated. | ||
3b | Zn/HCl (refs. 15 & 16) | 87% Fmoc-Sec(Trt)-OH product isolated. |