反应详情

A solution of 1,9 g of ethyl p-cyanophenylacetate in 50 ml of diglyme is added to a slurry of 0.48 g of sodium hydride (50% oil dispersion) in 10 ml of diglyme. The reaction mixture is stirred at room temperature for 2 h, cooled to 0° and 1.75 g of N-bromosuccinimide is added portionwise. The solvent is evaporated under high vacuum and the residue is chromatographed on 50 g of silica with ether to yield ethyl-α-bromo-p-cyanophenylacetate.

1. temperaturecooled to 0°
2. customThe solvent is evaporated under high vacuum
3. customthe residue is chromatographed on 50 g of silica with ether