Benzyl Bromide → Benzyl 3-benzyloxy-2-nitrobenzoate

HRID 219435

Reaktionsgleichung

Reaktionsgleichung von HRID 219435
[OH:1][C:2]1[C:3]([N+:11]([O-:13])=[O:12])=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6].[CH2:14](Br)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH2:14]([O:1][C:2]1[C:3]([N+:11]([O-:13])=[O:12])=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([O:7][CH2:5][C:4]1[CH:8]=[CH:9][CH:10]=[CH:2][CH:3]=1)=[O:6])[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1

Komponenten

5

Edukt 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 2932913-Hydroxy-2-nitrobenzoic acid

Produkt 1

HCID 10594871Benzyl 3-benzyloxy-2-nitrobenzoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

3-Hydroxy-2-nitrobenzoic acid (10.5 g) was dissolved in 60 ml of N,N-dimethylformamide, then 15 ml of benzyl bromide and 19.0 g of potassium carbonate were added at 0° C. and the mixture was stirred for one night at room temperature. The reaction solution was filtered through Celite and concentrated in vacuo. Water was added to the resulting residue and the mixture was extracted with ether, washed with a saturated aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was evaporated in vacuo to give 20.7 g of benzyl 3-benzyloxy-2-nitrobenzoate.

Aufarbeitung

  1. filtrationThe reaction solution was filtered through Celite
  2. concentrationconcentrated in vacuo
  3. additionWater was added to the resulting residue
  4. extractionthe mixture was extracted with ether
  5. washwashed with a saturated aqueous solution of sodium chloride
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customThe solvent was evaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-4fe582c0320b4431a61a25da457dc5f1
Quelldatensatz
uspto-grants-2012_06
Patentnummer
USRE043481E1

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