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Methanol → 1-(cyclopropylmethyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

HRID 333730
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 333730
[CH3:1][O:2][C:3]1[C:4]([OH:20])=[C:5]([C:9]2[N:13]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:12]=[CH:11][CH:10]=2)[N:6]=[N:7][CH:8]=1.[H-].[Na+].Br[CH2:24][CH:25]1[CH2:27][CH2:26]1.CO>CN(C)C=O>[CH:25]1([CH2:24][N:7]2[CH:8]=[C:3]([O:2][CH3:1])[C:4](=[O:20])[C:5]([C:9]3[N:13]([C:14]4[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=4)[N:12]=[CH:11][CH:10]=3)=[N:6]2)[CH2:27][CH2:26]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 887MethanolHCID 24758Sodium hydrideHCID 81503BromomethylcyclopropaneHCID 178493808HCID 178493808, Verbindung

Produkt 1

HCID 680148501-(cyclopropylmethyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Versuchsvorschrift

Under an argon atmosphere, to a solution of 5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4-ol (2.0 g) in dimethylformamide (40 mL) was added 60% sodium hydride (596 mg) with stirring under ice-cooling, and the mixture was stirred at the same temperature for 1.5 hr. Then, (bromomethyl)cyclopropane (1.085 mL) was added, and the mixture was stirred at room temperature for 16 hr. To the reaction mixture was added methanol, and the mixture was concentrated under reduced pressure to dryness. The residue was purified by silica gel column chromatography (ethyl acetate/methanol) and crystallized from methanol/ethyl acetate to give the title compound (2.12 g) as white prisms.

Aufarbeitung

  1. temperaturecooling
  2. stirringthe mixture was stirred at the same temperature for 1.5 hr
  3. stirringthe mixture was stirred at room temperature for 16 hr
  4. concentrationthe mixture was concentrated under reduced pressure to dryness
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate/methanol)
  6. customcrystallized from methanol/ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-aafd060bb8214724bc14d107f6b14dab
Quelldatensatz
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08883788B2

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