Sodium Chloride → 4-Methylpyridine-3-carbaldehyde

HRID 1421683Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1421683
[Li]CCCC.C[N:7]([CH3:12])[CH2:8][CH2:9]NC.N1C=[CH:17][CH:16]=[C:15]([CH:19]=[O:20])C=1.IC.[Na+].[Cl-]>C1COCC1>[CH3:17][C:16]1[CH:9]=[CH:8][N:7]=[CH:12][C:15]=1[CH:19]=[O:20]

Komponenten

7

Edukt 5

HCID 5234Sodium ChlorideHCID 6328Methyl iodideHCID 103713-PyridinecarboxaldehydeHCID 673381,2-Ethanediamine, N1,N1,N2-trimethyl-HCID 178418339Butyllithium2×

Produkt 1

HCID 124604704-Methylpyridine-3-carbaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

n-BuLi (1.6M in hexanes) (2.2 mmol, 1.37 ml) was added dropwise to a stirred solution of N,N,N'-trimethylethylenediamine (2.4 mmol, 0.245 g) in THF at -78° C. A solution of 3-pyridinecarboxaldehyde (2 mmol, 0.214 g) in THF was added and the mixture stirred for 15 min before adding a further portion of n-BuLi (1.6M in hexanes) (4 mmol, 2.5 ml). After stirring for 2 h at -70° C., iodomethane was added, the mixture stirred at RT for 30 min, then poured into aqueous NaCl solution, extracted twice with Et2O, dried (MgSO4), filtered and concentrated in vacuo. The residue was subjected to chromatography (SiO2 ; Et2O) to afford the title compound as an oil.

Aufarbeitung

  1. stirringAfter stirring for 2 h at -70° C.
  2. stirringthe mixture stirred at RT for 30 min
  3. extractionextracted twice with Et2O
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-8489366b140149dd8003d304e2903011
Quelldatensatz
uspto-grants-2000_06
Patentnummer
US06077854

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