反应详情

温度

-78 °C

BBr3 (4 mL, 4 mmol, 1.0 M in heptane) was added dropwise to a solution of 2-fluoro-5-(methyloxy)benzaldehyde in CH2Cl2 at −78° C. The reaction mixture was stirred at −78° C. for 1 hour, slowly warmed to 0° C. and stirred for 2 hours. The reaction mixture was poured into water, extracted with EtOAc (3×10 mL). The extracts were combined, washed with water, brine, and dried (Na2SO4). The solvent was evaporated, and the residue was purified on silica gel, using 0-20% EtOAc-Hexane to give the desired product (142 mg, 25%) as a white solid. MS m/z 141 [M+H]+

1. temperatureslowly warmed to 0° C.
2. stirringstirred for 2 hours
3. extractionextracted with EtOAc (3×10 mL)
4. washwashed with water, brine
5. dry with materialdried (Na2SO4)
6. customThe solvent was evaporated
7. customthe residue was purified on silica gel