Dimethylformamide → 2-Benzyloxy-5-ethoxybenzaldehyde

HRID 1294128

Reaktionsgleichung

Reaktionsgleichung von HRID 1294128
[CH2:1]([O:8][C:9]1[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][C:10]=1[CH:11]=[O:12])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:18](I)[CH3:19].C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:1]([O:8][C:9]1[CH:16]=[CH:15][C:14]([O:17][CH2:18][CH3:19])=[CH:13][C:10]=1[CH:11]=[O:12])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 6340IodoethaneHCID 11430Potassium CarbonateHCID 185361922-(Benzyloxy)-5-hydroxybenzaldehyde

Produkt 1

HCID 178612542-Benzyloxy-5-ethoxybenzaldehydeAusbeute 92,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of 2-benzyloxy-5-hydroxybenzaldehyde (8.93 g), ethyl iodide (7.31 g), anhydrous potassium carbonate (5.40 g) and N,N-dimethylformamide (50 mL) was stirred at room temperature for 15 hrs. The reaction mixture was poured into water and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The obtained residue was subjected to silica gel column chromatography to give 2-benzyloxy-5-ethoxybenzaldehyde as a colorless oil (9.25 g, 92%) from a fraction eluted with ethyl acetate-hexane (1:9, v/v).

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-180de77d51c44996bba278b04d4b15e0
Quelldatensatz
uspto-grants-2007_07
Patentnummer
US07238716B2

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