Dimethylformamide → methyl 3-[1-[4-[5-methyl-2-(2-thienyl)-4-oxazolylmethoxy]benzyl]-3-phenyl-1H-pyrazol-4-yl]propionate

HRID 350102Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 350102
Cl[CH2:2][C:3]1[N:4]=[C:5]([C:9]2[S:10][CH:11]=[CH:12][CH:13]=2)[O:6][C:7]=1[CH3:8].[OH:14][C:15]1[CH:38]=[CH:37][C:18]([CH2:19][N:20]2[CH:24]=[C:23]([CH2:25][CH2:26][C:27]([O:29][CH3:30])=[O:28])[C:22]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)=[N:21]2)=[CH:17][CH:16]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH3:8][C:7]1[O:6][C:5]([C:9]2[S:10][CH:11]=[CH:12][CH:13]=2)=[N:4][C:3]=1[CH2:2][O:14][C:15]1[CH:16]=[CH:17][C:18]([CH2:19][N:20]2[CH:24]=[C:23]([CH2:25][CH2:26][C:27]([O:29][CH3:30])=[O:28])[C:22]([C:31]3[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=3)=[N:21]2)=[CH:37][CH:38]=1

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 50764914-(Chloromethyl)-5-methyl-2-(thiophen-2-yl)-1,3-oxazoleHCID 23024960methyl 3-[1-(4-hydroxybenzyl)-3-phenyl-1H-pyrazol-4-yl]propionate

Produkt 1

HCID 69423000methyl 3-[1-[4-[5-methyl-2-(2-thienyl)-4-oxazolylmethoxy]benzyl]-3-phenyl-1H-pyrazol-4-yl]propionateAusbeute 93,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of 4-chloromethyl-5-methyl-2-(2-thienyl)oxazole (338 mg), methyl 3-[1-(4-hydroxybenzyl)-3-phenyl-1H-pyrazol-4-yl]propionate (500 mg), potassium carbonate (397 mg) and N,N-dimethylformamide (7 ml) was stirred at room temperature for 18 hours. The reaction mixture was poured into water, which was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), then concentrated. The residue was subjected to silica gel column chromatography, and methyl 3-[1-[4-[5-methyl-2-(2-thienyl)-4-oxazolylmethoxy]benzyl]-3-phenyl-1H-pyrazol-4-yl]propionate (715 mg, yield: 88%) was obtained as a colorless oily substance from the fraction eluted with ethyl acetate-hexane (2:3, volume ratio).

Aufarbeitung

  1. extractionwas extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated aqueous sodium chloride solution
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-e3c534f2d8004f70a18799d4d26fa3bd
Quelldatensatz
uspto-grants-2007_02
Patentnummer
US07179823B1

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