Hydrochloric Acid → 1-(2-(Benzyloxy)-4-fluorophenyl)ethanone

HRID 1433148

Reaktionsgleichung

Reaktionsgleichung von HRID 1433148
C(=O)([O-])[O-].[K+].[K+].[F:7][C:8]1[CH:13]=[CH:12][C:11]([C:14](=[O:16])[CH3:15])=[C:10]([OH:17])[CH:9]=1.[CH2:18](Br)[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1.Cl>CN(C=O)C>[CH2:18]([O:17][C:10]1[CH:9]=[C:8]([F:7])[CH:13]=[CH:12][C:11]=1[C:14](=[O:16])[CH3:15])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 27373264'-Fluoro-2'-hydroxyacetophenone

Produkt 1

HCID 212415771-(2-(Benzyloxy)-4-fluorophenyl)ethanoneAusbeute 97,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

Potassium carbonate (4.02 g, 29.10 mmol) was added to a solution of 4′-fluoro-2′-hydroxyacetophenone (2.0 mL, 2.56 g, 16.60 mmol) in DMF (15 mL). Benzyl bromide (2.07 mL, 2.98 g, 17.50 mmol) was added dropwise over 5 minutes at room temperature, and the mixture stirred for 18 h. The mixture was poured into hydrochloric acid (1.0 M in H2O; 200 mL) and extracted with ethyl acetate (2×100 mL). The combined organic extracts were dried (MgSO4) and the solvents removed in vacuo. Pure 2′-(benzyloxy)-4′-fluoroacetophenone (3.94 g, 97%) was obtained as a white powder after trituration with hexane. Rf 0.44 (9:1 hexane:EtOAc); δH (CDCl3) 7.82 (1H, dd, J=8.6 and 7.0 Hz), 7.43-7.38 (5H, m), 6.75-6.69 (2H, m), 5.13 (2H, s), 2.56 (3H, d, J=3.2 Hz); LCMS retention time 2.68 min, M+H+ 245.1.

Aufarbeitung

  1. extractionextracted with ethyl acetate (2×100 mL)
  2. dry with materialThe combined organic extracts were dried (MgSO4)
  3. customthe solvents removed in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-b46be5ce9de943b8952c873fd3786abe
Quelldatensatz
uspto-grants-2009_11
Patentnummer
US07612201B2

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