Water → 3-(4-Fluorophenyl)propan-1-ol

A solution of 3-(4-fluorophenyl)-propionic acid (4.20 g, 25 mmol) in tetrahydrofuran (10 mL) was stirred on an ice bath and treated with a solution of borane in tetrahydrofuran (1.0 M, 33 mL, 33 mmol) over 15 minutes. The resulting solution was stirred at room temperature for one hour. A mixture of tetrahydrofuran (5 mL) and water (5 mL) was added over 2 minutes. After 5 minutes of additional stirring, 4 mL of additional water was added, and solid potassium carbonate was added until the aqueous phase was saturated. The layers were separated and the aqueous phase was extracted three times with ethyl acetate. The combined organic phases were dried over sodium sulfate and concentrated to provide a colorless liquid (3.70 g, 96%) which was used without further purification. 1H NMR (300 MHz, CDCl3) δ7.16 (m, 2H), 6.99 (t, J=9 Hz, 2H), 3.69 (t, J=6 Hz, 2H), 2.70 (t, J=8 Hz, 2H), 1.87 (m, 2H), 1.50 (bs, 1H). Mass spec (CH4-CI) m/z 137.0 (M+H+-H2O).

1. additionwas added over 2 minutes
2. customThe layers were separated
3. extractionthe aqueous phase was extracted three times with ethyl acetate
4. dry with materialThe combined organic phases were dried over sodium sulfate
5. concentrationconcentrated

ORD record

ord-03f137224d594f848e7666bf52087ec8

Source dataset

uspto-grants-2005_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06919356B2