Dimethylformamide → 3-Bromo-5-(methoxymethyl)pyridine

HRID 1620079Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1620079
[H-].[Na+].[CH3:3]N(C=O)C.[Br:8][C:9]1[CH:10]=[C:11]([CH2:15][OH:16])[CH:12]=[N:13][CH:14]=1.CI>O>[Br:8][C:9]1[CH:14]=[N:13][CH:12]=[C:11]([CH2:15][O:16][CH3:3])[CH:10]=1

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 2784733(5-Bromo-3-pyridinyl)methanol

Produkt 1

HCID 186245693-Bromo-5-(methoxymethyl)pyridine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Sodium hydride (61% in oil) (11 mg) was added to a DMF (0.9 ml) solution containing (5-bromopyridin-3-yl)methanol (34 mg) under ice cooling, followed by stirring for 1 hour. Then, methyl iodide (17 μl) was added, followed by stirring at room temperature for 13 hours. Thereafter, water was added to the reaction solution, followed by extraction with ethyl acetate. The resultant was washed with saturated saline and dried over anhydrous sodium sulfate. Subsequently, the solvent was distilled away under reduced pressure, the obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=4:1 to 1:1), and a light yellow solid of 3-bromo-5-(methoxymethyl)pyridine (26.5 mg) was thus obtained.

Aufarbeitung

  1. stirringby stirring at room temperature for 13 hours
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe resultant was washed with saturated saline
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationSubsequently, the solvent was distilled away under reduced pressure
  6. customthe obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=4:1 to 1:1)

Quellen und Nachweise

ORD-Eintrag
ord-c1fc2a3de1464bd99069b210e4f32e05
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08772320B2

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