Methanol → HCID 14989222, Verbindung

HRID 1030918Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1030918
[Na].Cl[C:3]1[N:8]=[N:7][C:6]([N:9]2[CH2:14][CH2:13][CH:12]([CH2:15][CH2:16][OH:17])[CH2:11][CH2:10]2)=[CH:5][CH:4]=1.[CH3:18][OH:19]>>[CH3:18][O:19][C:3]1[N:8]=[N:7][C:6]([N:9]2[CH2:14][CH2:13][CH:12]([CH2:15][CH2:16][OH:17])[CH2:11][CH2:10]2)=[CH:5][CH:4]=1

Komponenten

4

Edukt 3

HCID 887MethanolHCID 5360545SodiumHCID 149892211-(6-Chloro-3-pyridazinyl)-4-piperidineethanol

Produkt 1

HCID 14989222HCID 14989222, VerbindungAusbeute 61,5 %

Versuchsvorschrift

5.7 Parts of sodium (in pieces) were added to 86 parts of methanol. After the dropwise addition of 12.1 parts of 1-(6-chloro-3-pyridazinyl)-4-piperidineethanol, the reaction mixture was stirred overnight at reflux temperature. After cooling, the whole was poured into ice water and the product was extracted with dichloromethane. The extract was dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of methylbenzene and methanol (90:10 by volume) as eluent. The desired fraction was collected and the eluent was evaporated, yielding 7.3 parts (61.5%) of 1-(6-methoxy-3-pyridazinyl)-4-piperidineethanol as a residue (int. 95).

Aufarbeitung

  1. temperatureat reflux temperature
  2. temperatureAfter cooling
  3. extractionthe product was extracted with dichloromethane
  4. customThe extract was dried
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by column chromatography over silica gel using
  8. additiona mixture of methylbenzene and methanol (90:10 by volume) as eluent
  9. customThe desired fraction was collected
  10. customthe eluent was evaporated

Quellen und Nachweise

ORD-Eintrag
ord-1c0114af2c0342bca8ad4b197cb7f94c
Quelldatensatz
uspto-grants-1992_04
Patentnummer
US05106973

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