反应详情

A solution of (4-hydroxyphenyl)acetonitrile (6.01 g, 45.1 mmol) in N,N-dimethylformamide (60 ml) was treated with imidazole (3.81 g, 58.6 mmol), tert-butyldimethylsilyl chloride (7.49 g, 49.6 mmol) and N,N-dimethylaminopyridine (20 mg) and the resulting solution left to stir at room temperature under a nitrogen atmosphere for 16 hours. The reaction mixture was diluted with water (200 ml) and extracted with ethyl acetate (200 ml×2). The combined organic extracts were washed with sat aq. sodium chloride (200 ml), dried (sodium sulfate) and the solvent removed in vacuo. Purification by column chromatography on silica gel eluting with ethyl acetate:pentane (0:100 changing to 10:90) gave the title compound as a pale yellow oil (9.44 g).

1. waitthe resulting solution left
2. extractionextracted with ethyl acetate (200 ml×2)
3. washThe combined organic extracts were washed with sat aq. sodium chloride (200 ml)
4. dry with materialdried (sodium sulfate)
5. customthe solvent removed in vacuo
6. customPurification by column chromatography on silica gel eluting with ethyl acetate:pentane (0:100 changing to 10:90)