反应详情

A solution of (S)-ethyl 2-tert-butoxy-2-(3,6-dimethyl-1-(trifluoromethyl-sulfonyloxy) naphthalen-2-yl)acetate (1.8 g, 3.9 mmol) in THF (18.2 mL) pre-cooled to −10° C. was treated dropwise with tetrabutylammonium fluoride (1M in THF, 7.8 mL, 7.8 mmol). After 1 hour, saturated NaHCO3 was added and the mixture stirred for 20 minutes. Following extraction of the aqueous layer with EtOAc, the combined organics were washed with brine, dried over anhydrous MgSO4, filtered and concentrated in vacuo. Purification via Yamazen silica gel column chromatography afforded (S)-ethyl 2-tert-butoxy-2-(1-hydroxy-3,6-dimethylnaphthalen-2-yl)acetate. LCMS-ESI− (m/z): [M−H]− calcd for C20H25O4: 329.4. found: 329.1.

1. extractionextraction of the aqueous layer with EtOAc
2. washthe combined organics were washed with brine
3. dry with materialdried over anhydrous MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customPurification via Yamazen silica gel column chromatography