反应详情

温度

-78 °C

Triflic acid (3.2 g, 21 mmol) is added portionwise to diphenyldimethylsilane (2.22 g, 10.5 mmol) in 20 mL of dichloromethane and stirred for 1 hour. After cooling to -78° C., diisopropylethylamine (1.42 g, 11 mmol) and 4'-fluoroacetophenone (1.38 g, 10 mmol) are added and the reaction mixture stirred for another hour before adding 3-cyanobenzaldehyde (1.0 g, 7.62 mmol). After the reaction mixture is stirred 18 hours, it is diluted with 100 mL of dichloromethane and stirred 1 hour with a saturated solution of sodium bicarbonate. The organic layer is separated, dried (MgSO4), concentrated and columned over SiO2 eluting with dichloromethane to provide 0.8 g of the title compound; mp 170°-172° C.

1. stirringthe reaction mixture stirred for another hour
2. stirringAfter the reaction mixture is stirred 18 hours
3. customThe organic layer is separated
4. dry with materialdried (MgSO4)
5. concentrationconcentrated