Table 17.
entry | 177 | RLi | R | 487/488 | yield (%) | |
---|---|---|---|---|---|---|
1 | 177d | MeLi | Me | 487a | 95 | |
2 | 177d | sec-BuLi | sec-Bu | 487b | 80 | |
3 | 177d | tert-BuLi | tert-Bu | 488a | 90 | |
4 | 177e | MeLi | Me | 487c | 92 | |
5 | 177e | sec-BuLi | sec-Bu | 487d | 88 | |
6 | 177e | tert-BuLi | tert-Bu | 488b | 90 |