反应详情

温度

-78 °C

To a solution of 4-bromo-3,5-dimethyl-triisopropylsilanoxybenzene (1.29 g, 3.6 mmol, G. Chiellini et al. Biorg. Med. Chem. Lett. 2000, 10, 2607) in THF at −78° C. was added n-butyllithium (1.58 mL, 3.96 mmol, 2.5 M in THF). After 30 min, a solution of 4-fluoro-3-isopropenylbenzaldehyde (500 mg, 3.0 mmol) in THF was added. The reaction mixture was stirred at −78° C. for 1 h, allowed to warm to room temperature, diluted with EtOAc and quenched with water. The organic layer was dried over MgSO4, filtered and concentrated to afford crude 1-(2,6-dimethyl-4-triisopropylsilanyloxyphenyl)-1-(4′-fluoro-3′-isopropenylphenyl)methanol as an oil: 1H NMR (200 MHz, CDCl3): δ 7.18 (m, 1 H), 7.02 (m, 1 H), 6.94 (m, 1 H), 6.56 (s, 2 H), 6.22 (s, 1 H), 5.18 (m, 2 H), 2.20 (s, 6 H), 2.08 (s, 3 H), 1.25 (m, 3 H), 1.11 (m, 18).

1. temperatureto warm to room temperature
2. customquenched with water
3. dry with materialThe organic layer was dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated