反应详情

To a solution of (S)-ethyl 2-tert-butoxy-2-(6-chloro-3-methyl-1-(trifluoromethylsulfonyloxy)naphthalen-2-yl)acetate (1.521 g, 3.15 mmol) in anhydrous THF (30 mL) at 0° C. was added a 1M solution of tetrabutylammonium fluoride in THF (6.30 mL. 6.30 mmol) to give a bright yellow solution. The reaction mixture was stirred for 45 minutes and quenched with saturated ammonium chloride solution and stirred for 5 minutes. The product was extracted with ethyl acetate/hexane (1:1, 2×). The combined organic layer was dried (MgSO4), filtered, concentrated and purified by flash column chromatography (silica gel, 0 to 10% ethyl acetate/hexanes) to give the desired product. LCMS-ESI+ (m/z): [M+H]+ calcd for C19H24ClO4: 349.1. Found: 349.1.

1. customto give a bright yellow solution
2. customquenched with saturated ammonium chloride solution
3. stirringstirred for 5 minutes
4. extractionThe product was extracted with ethyl acetate/hexane (1:1, 2×)
5. dry with materialThe combined organic layer was dried (MgSO4)
6. filtrationfiltered
7. concentrationconcentrated
8. custompurified by flash column chromatography (silica gel, 0 to 10% ethyl acetate/hexanes)