反应详情

温度

25 °C

1.6M n-Butyllithium (680 ml) is added over 5 min to a stirred solution of 4-ethoxyphenyl acetonitrile (56 g) in anhydrous THF (600 ml) at 25° C. under an atmosphere of nitrogen. After 1 h, a solution of 1.2 dichloroethane (111 g) in anhydrous THF (300 ml) is added dropwise over 2 h and the mixture stirred at 25° C. for 16 h. The mixture is then poured onto 3N HCl (1 l ), concentrated under reduced pressure, extracted with diethyl ether (x3), washed with water, dried over anhydrous sodium sulphate, the solvent removed under reduced pressure and the residue distilled to give the product, b.p. 116°-120° C., yield 40 g. nD 1.5320.

1. concentrationconcentrated under reduced pressure
2. extractionextracted with diethyl ether (x3)
3. washwashed with water
4. dry with materialdried over anhydrous sodium sulphate
5. customthe solvent removed under reduced pressure
6. distillationthe residue distilled
7. customto give the product, b.p. 116°-120° C., yield 40 g