Table 19.
entry | conditions | R | 548 | yield (%) |
---|---|---|---|---|
1 | MeLi/Me2SO4 | -CH3 | 548a | 70 |
2 | MeLi/BrCH2Ph | -CH2Ph | 548b | 58 |
3 | tBuLi/ClCOtBu | -C(O)tBu | 548c | 44 |
4 | tBuLi/ClCOOBn | -C(O)OBn | 548d | 33 |
5 | MeLi/TMSCl | -SiMe3 | 548e | 40 |
6 | tBuLi/Bu3SnCl | -SnBu3 | 548f | 57 |
7 | tBuLi/PhSeCl | -SePh | 548g | 55 |
8 | Pd(PPh3)4, CuI, HC≡CC4H9 | -C≡CC4H9 | 548h | 10 |
9 | PPh3, Pd(OAc)2 Cs2CO3, ArB(OH)2 |
C6H5 | 548i | 63 |
10 | as above | 2-MeO-C6H4 | 548j | 76 |
11 | as above | 4-MeO-C6H4 | 548k | 84 |
12 | as above | 2-Naphthyl | 548l | 84 |