4-Bromo-2-fluorobenzaldehyde → 4-Bromo-2-methoxybenzaldehyde

HRID 510578Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 510578
[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[C:4](F)[CH:3]=1.[CH3:11][O-:12].[Na+]>CO>[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[C:4]([O:12][CH3:11])[CH:3]=1

Komponenten

4

Edukt 2

HCID 1435174-Bromo-2-fluorobenzaldehydeHCID 10942334Sodium Methoxide

Produkt 1

HCID 110530414-Bromo-2-methoxybenzaldehydeAusbeute 61,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

To a stirred solution of 4-bromo-2-fluorobenzaldehyde (3.38 g; 16 mmol) in 35 mL methanol at ambient temperature was added sodium methoxide solution (4.0 mL of 25% solution; 17.6 mmol), and the resulting solution was stirred and heated to reflux. After refluxing for 2 hours the solvent was evaporated. The residue was partitioned between 100 mL dichloromethane and 50 mL water. The organic layer was dried over sodium sulfate and evaporated. The residue was purified by silica gel chromatography to give 2.13 g of 4-bromo-2-methoxybenzaldehyde as a white solid. MS (apci, neg) m/z=199.

Aufarbeitung

  1. temperatureheated to reflux
  2. temperatureAfter refluxing for 2 hours the solvent
  3. customwas evaporated
  4. customThe residue was partitioned between 100 mL dichloromethane and 50 mL water
  5. dry with materialThe organic layer was dried over sodium sulfate
  6. customevaporated
  7. customThe residue was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-532aa89658c34ce284eba00699c24cbf
Quelldatensatz
uspto-grants-2015_08
Patentnummer
US09096567B2

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