Water → Methyl 2-amino-5-bromo-3-methoxybenzoate

HRID 2206700

Reaktionsgleichung

Reaktionsgleichung von HRID 2206700
[NH2:1][C:2]1[C:11]([O:12][CH3:13])=[CH:10][CH:9]=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].[Br:14]N1C(=O)CCC1=O.O>CN(C=O)C>[NH2:1][C:2]1[C:11]([O:12][CH3:13])=[CH:10][C:9]([Br:14])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5]

Komponenten

5

Edukt 3

HCID 962WaterHCID 67184N-bromobutanimideHCID 602320Methyl 2-amino-3-methoxybenzoate

Produkt 1

HCID 13894022Methyl 2-amino-5-bromo-3-methoxybenzoateAusbeute 86 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of compound 53 (22.4 g 123 mmol) in DMF (250 mL) was added N-bromosuccinimide (21.9 g, 123 mmol) portionwise at 0° C. The mixture was stirred at 0° C. for 0.5 h. To the mixture was added water and extracted with EtOAc (500 mL×2). The combined organic layer was dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by silica gel column chromatography to provide the desired compound 54 (27.5 g, 86%) as a white solid.

Aufarbeitung

  1. extractionextracted with EtOAc (500 mL×2)
  2. dry with materialThe combined organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-d9a4f93d8e0e4fc0b5753717cf2b053a
Quelldatensatz
uspto-grants-2016_06
Patentnummer
US09371303B2

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