反应详情

A mixture of 4-chloro-2-fluoro-benzonitrile (1.00 g, 6.43 mmol), ethylene glycol (3.59 mL, 64.3 mmol) and K2CO3 (1.33 g, 9.64 mmol) in DMF (30 mL) is stirred at RT for 12 h. The reaction mixture is quenched by H2O. EtOAc is added and the organic layer is washed with brine, dried over MgSO4. Concentration in vacuo affords the corresponding 4-chloro-2-(2-hydroxy-ethoxy)-benzonitrile. A THF (6 mL) solution of 4-chloro-2-(2-hydroxy-ethoxy)benzonitrile (875 mg, 4.43 mmol) is added to a suspension of LAH (504 mg, 13.2 mmol) in THF (45 mL) at 0° C. The reaction is allowed to stir for 2 h at ambient temperature and then quenched by Na2SO4.10H2O, and the product is isolated by filtration with Celite and washed with THF and dried under reduced pressure to give the title compound as colorless solid; ES-MS: M+=202.1; HPLC: AtRet=1.90 min

1. customThe reaction mixture is quenched by H2O
2. additionEtOAc is added
3. washthe organic layer is washed with brine
4. dry with materialdried over MgSO4
5. concentrationConcentration in vacuo