Table 2. Negishi Coupling of Zinc Reagent 8 with Vinyl Bromides.
entry | substrate | R1 | R2 | R3 | product | yield (%) |
---|---|---|---|---|---|---|
1 | 12 | Me | H | H | 16 | 84 |
2 | 13 | H | Me | Me | 17 | 95 |
3 | (E)-14 | Me | Me | H | (E)-18 | 68 |
4 | (Z)-14 | Me | H | Me | (Z)-18 | 72 |
5 | (E,Z)-14 | Me | Me/H | (E,Z)-18 | 88 | |
6 | 15 | (CH2)2 | H | 19 | 79 |