反应详情

To a solution of 2-nitro-5-trifluoromethylphenol (400 mg) in DMF (4.0 ml), sodium hydride (77 mg) was added at 0° C. in a stream of argon. The mixture was stirred for 30 minutes. After stirring, methoxymethyl chloride (147 μl) was added dropwise thereto. The mixture was stirred for 20 minutes. The reaction mixture was quenched by iced water and extracted with ethyl acetate. The layer containing ethyl acetate was washed, dried over and concentrated under the reduced pressure. The residue was purified on silica gel column chromatography (hexane:AcOEt=20:1) to give the title compound (353 mg) having the following physical data.

1. stirringAfter stirring
2. stirringThe mixture was stirred for 20 minutes
3. customThe reaction mixture was quenched by iced water
4. extractionextracted with ethyl acetate
5. additionThe layer containing ethyl acetate
6. washwas washed
7. customdried over and
8. concentrationconcentrated under the reduced pressure
9. customThe residue was purified on silica gel column chromatography (hexane:AcOEt=20:1)