反应详情

温度

0 °C

To a solution of 4-(2-hydroxy-ethoxy)-phenol (4.2 g, 27 mmol) in anhydrous N,N-dimethylformamide (30 mL) at 0° C. was added imidazole (2.1 g, 31 mmol) and tert-butyldimethylchlorosilane (4 g, 27 mmol). The reaction mixture was then stirred at 0° C. for 1 h. The mixture was partitioned between ethyl acetate and water. Organic layer was separated, aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with water and brine, dried over MgSO4, and concentrated. The residue was purified by chromatography (EtOAc:hexanes=1;4) to give 4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-phenol as a colorless oil (5.1 g, 70%)

1. customThe mixture was partitioned between ethyl acetate and water
2. customOrganic layer was separated
3. extractionaqueous layer was extracted with ethyl acetate
4. washThe combined organic layers were washed with water and brine
5. dry with materialdried over MgSO4
6. concentrationconcentrated
7. customThe residue was purified by chromatography (EtOAc:hexanes=1;4)