Benzyl Bromide → 5-(Benzyloxy)-2-bromobenzaldehyde

HRID 1040386Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1040386
[Br:1][C:2]1[CH:9]=[CH:8][C:7]([OH:10])=[CH:6][C:3]=1[CH:4]=[O:5].C(=O)([O-])[O-].[K+].[K+].[CH2:17](Br)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>[I-].C([N+](CCCC)(CCCC)CCCC)CCC.CN(C)C=O.C(OCC)C>[CH2:17]([O:10][C:7]1[CH:8]=[CH:9][C:2]([Br:1])=[C:3]([CH:6]=1)[CH:4]=[O:5])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Komponenten

7

Edukt 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 3871792-Bromo-5-hydroxybenzaldehyde

Produkt 1

HCID 108700245-(Benzyloxy)-2-bromobenzaldehydeAusbeute 97 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 67553Tetrabutylammonium IodideKatalysatorHCID 3283Diethyl EtherLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a suspension of 2-bromo-5-hydroxybenzaldehyde (100 mg, 0.50 mmol), potassium carbonate (138 mg, 1.00 mmol), and tetrabutylammonium iodide (18 mg, 0.05 mmol) in 1.0 mL of dry N,N-dimethylformamide was added benzyl bromide (89 μL, 0.74 mmol) at 0° C. After being stirred at room temperature overnight, the reaction mixture was diluted with diethyl ether. The solution was washed with water, saturated NaHCO3 aqueous solution, brine, and dried over MgSO4. After filtration, the filtrate was concentrated in vacuo, and the residue was purified by silica gel column chromatography (hexane/ethyl acetate=95/5 to 80/20) to obtain the title compound as a colorless oil (140 mg, 97%).

Aufarbeitung

  1. washThe solution was washed with water, saturated NaHCO3 aqueous solution, brine
  2. dry with materialdried over MgSO4
  3. filtrationAfter filtration
  4. concentrationthe filtrate was concentrated in vacuo
  5. customthe residue was purified by silica gel column chromatography (hexane/ethyl acetate=95/5 to 80/20)

Quellen und Nachweise

ORD-Eintrag
ord-f03e115501574fd19195461440c439df
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08552220B2

Notizen zur Reaktion

Wird geladen…