[Cl:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][C:10](O)=[O:11])[CH:5]=[CH:6][CH:7]=1.O1CCCC1.B.O.Cl>O1CCCC1>[Cl:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][CH2:10][OH:11])[CH:5]=[CH:6][CH:7]=13-(3-Chlorophenyl)propionic acid (5.00 g) was dissolved in tetrahydrofuran (100 ml), a tetrahydrofuran-borane.tetrahydrofuran solution (1 mol/l, 34.5 ml) was added dropwise to the mixture under ice-cooling, and the mixture was stirred under ice-cooling for 30 min, and further at room temperature for 15 hr. To the reaction mixture was added water, 1 mol/l aqueous hydrochloric acid solution was added, and the mixture was extracted with ethyl acetate, washed with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give the object product (3.48 g) as a colorless oil.
Wird geladen…
