反应详情

温度

-70 °C

To a mixture under nitrogen of 26.3 g (260 mmoles) of diisopropylamine and 300 ml of tetrahydrofuran cooled to -75° C., there is added dropwise 125 ml (200 mmoles) of n-butyllithium in a 1.6M hexane solution, then 13.4 g (200 mmoles) of commercial cyclopropanecarbonitrile and finally 25.3 g (200 mmoles) of benzyl chloride. The reaction mixture is stirred 2 hours at -70° C. then 2 days at 20° C. 4 ml of water is added, before washing the reaction mixture with water saturated with NaCl. The organic phase dried over Na2SO4 is concentrated to give a brown liquid, which is purified by distillation. There is obtained 16.8 g (yield=53.5%) of a colorless liquid. b.p.13 =140°-8° C. A new distillation gives a colorless liquid. b.p.0.3 =64°-8° C.

1. custom2 days
2. customat 20° C
3. washbefore washing the reaction mixture with water saturated with NaCl
4. dry with materialThe organic phase dried over Na2SO4
5. concentrationis concentrated
6. customto give a brown liquid, which
7. distillationis purified by distillation