Water → 1-Phenyl-1,4-butanediol

Methyl 3-benzoylpropionate (50 g, 0.25 mol) in 300 ml of anhydrous THF was added under nitrogen dropwise over one hour to a suspension of LAH in 500 ml of anhydrous THF. After the addition the mixture was refluxed for 20 hours. After cooling to room temperature 14.3 ml of water was added dropwise followed by the addition of 14.3 ml of 15% KOH and then 42.9 ml of water. The mixture was stirred for 30 minutes and then filtered. The filtrate was concentrated under reduced pressure to remove the THF. The residue was partitioned between methylene chloride and 1 N HCl. The organic layer was separated and the aqueous layer extracted three times with methylene chloride. The organic extracts were combined, dried (MgSO4) and the solvent removed under reduced pressure to give 4-phenyl-4-hydroxybutanol (37.90 g, 91%) as a white solid, mp 63-68° C.

1. additionAfter the addition the mixture
2. temperaturewas refluxed for 20 hours
3. additionwas added dropwise
4. filtrationfiltered
5. concentrationThe filtrate was concentrated under reduced pressure
6. customto remove the THF
7. customThe residue was partitioned between methylene chloride and 1 N HCl
8. customThe organic layer was separated
9. extractionthe aqueous layer extracted three times with methylene chloride
10. dry with materialdried (MgSO4)
11. customthe solvent removed under reduced pressure

ORD record

ord-68863bb6e23e49f6bd779d534b50b5b3

Source dataset

uspto-grants-1999_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05977170