Methanol → Methyl 2-(4-fluorophenyl)acetate

HRID 381868

Reaktionsgleichung

Reaktionsgleichung von HRID 381868
S(=O)(=O)(O)O.[F:6][C:7]1[CH:12]=[CH:11][C:10]([CH2:13][C:14]([OH:16])=[O:15])=[CH:9][CH:8]=1.[CH3:17]O>CCOCC.C(OCC)(=O)C>[F:6][C:7]1[CH:8]=[CH:9][C:10]([CH2:13][C:14]([O:16][CH3:17])=[O:15])=[CH:11][CH:12]=1

Komponenten

5

Edukt 3

HCID 887MethanolHCID 1118Sulfuric AcidHCID 98372-(4-Fluorophenyl)acetic acid

Produkt 1

HCID 2733233Methyl 2-(4-fluorophenyl)acetate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21584169Diethylether ethylacetateLösungsmittel

Versuchsvorschrift

A catalytic amount (0.5 mL) of concentrated sulfuric acid was added to a solution of 4-fluorophenylacetic acid (30.8 g, 0.20 mol) in 500 mL of methanol. The solution was stirred at reflux for 4 hours. The volatile materials were removed under reduced pressure to furnish a colorless oil which was dissolved in ether/ethyl acetate and washed with 2 N aqueous Na2CO3, brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide an oil which was dried overnight under high vacuum (yield: 33.6 g; 95%). 1H NMR (300 MHz, CDCl3) δ 3.59 (s, 2H), 3.65 (s, 3H), 7.01 (t, J=9 Hz, 2H), 7.20-7.28 (m, 2H). MS (DCI/NH3) m/z 186 (M+NH4)+.

Aufarbeitung

  1. temperatureat reflux for 4 hours
  2. customThe volatile materials were removed under reduced pressure
  3. customto furnish a colorless oil which
  4. washwashed with 2 N aqueous Na2CO3, brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated under reduced pressure
  8. customto provide an oil which
  9. customwas dried overnight under high vacuum (yield: 33.6 g; 95%)

Quellen und Nachweise

ORD-Eintrag
ord-6feb91dac7f34909bb374af84cd94bf1
Quelldatensatz
uspto-grants-2001_10
Patentnummer
US06307047B1

Verknüpfte Notizen

Wird geladen…