反应详情

Lithium (0.17 g, 24 mmol) was added in portions to a solution of benzonitrile (0.99 mL, 1.0 g, 9.7 mmol) and t-BuOH (0.93 mL, 0.72 g, 9.7 mmol) in NH3 (50 mL) and THF (10 mL) under N2 at −78° C. After 10 minutes, ethyl bromoacetate (2.2 mL, 3.3 g, 20 mmol) was added dropwise. After 1 hour, ammonium chloride (4.0 g, 75 mmol) was added in portions. The reaction mixture was slowly warmed to room temperature while the NH3 was removed with a stream of N2. Water (25 mL) was added, and the mixture extracted with EtOAc (3×25 mL). The combined organic extracts were washed with brine (50 mL), dried (MgSO4), and concentrated under reduced pressure. Flash chromatography (SiO2. CH2Cl2) afforded 1.12 g (60%) of product as an oil.

1. waitAfter 1 hour
2. customwas removed with a stream of N2
3. additionWater (25 mL) was added
4. extractionthe mixture extracted with EtOAc (3×25 mL)
5. washThe combined organic extracts were washed with brine (50 mL)
6. dry with materialdried (MgSO4)
7. concentrationconcentrated under reduced pressure