Dimethylformamide → ethyl 1-benzyl-3-[(3-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxylate

HRID 2221740Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2221740
Cl[CH2:2][C:3]1[CH:4]=[C:5]([CH:19]=[CH:20][CH:21]=1)[O:6][CH2:7][C:8]1[N:9]=[C:10]([C:14]2[O:15][CH:16]=[CH:17][CH:18]=2)[O:11][C:12]=1[CH3:13].[CH2:22]([N:29]1[CH:33]=[C:32]([C:34]([O:36][CH2:37][CH3:38])=[O:35])[C:31]([OH:39])=[N:30]1)[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:22]([N:29]1[CH:33]=[C:32]([C:34]([O:36][CH2:37][CH3:38])=[O:35])[C:31]([O:39][CH2:2][C:3]2[CH:21]=[CH:20][CH:19]=[C:5]([O:6][CH2:7][C:8]3[N:9]=[C:10]([C:14]4[O:15][CH:16]=[CH:17][CH:18]=4)[O:11][C:12]=3[CH3:13])[CH:4]=2)=[N:30]1)[C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 23076545HCID 23076545, VerbindungHCID 178469738HCID 178469738, Verbindung

Produkt 1

HCID 69217587ethyl 1-benzyl-3-[(3-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxylateAusbeute 79 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A mixture of 4-(3-chloromethylphenoxy)methyl-2-(2-furyl)-5-methyl-1,3-oxazole (2.04 g), ethyl 1-benzyl-3-hydroxy-1H-pyrazole-4-carboxylate (1.50 g), potassium carbonate (0.84 g) and N,N-dimethylformamide (50 mL) was stirred at 80° C. for 15 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography and eluted with ethyl acetate-hexane (1:2, v/v) to give ethyl 1-benzyl-3-[(3-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxylate as colorless crystals (2.46 g, yield 79%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 92-93° C.

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. washeluted with ethyl acetate-hexane (1:2

Quellen und Nachweise

ORD-Eintrag
ord-c2664293d1584a3284662cd485b5133d
Quelldatensatz
uspto-grants-2008_05
Patentnummer
US07368578B2

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