Dimethylformamide → [3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acid

HRID 1295338Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1295338
[OH:1][C:2]1[C:6]([CH2:7][C:8]([O:10]C)=[O:9])=[CH:5][N:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]=1.Cl[CH2:19][C:20]1[CH:38]=[CH:37][C:23]([O:24][CH2:25][C:26]2[N:27]=[C:28]([C:32]3[O:33][CH:34]=[CH:35][CH:36]=3)[O:29][C:30]=2[CH3:31])=[C:22]([O:39][CH3:40])[CH:21]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[O:33]1[CH:34]=[CH:35][CH:36]=[C:32]1[C:28]1[O:29][C:30]([CH3:31])=[C:26]([CH2:25][O:24][C:23]2[CH:37]=[CH:38][C:20]([CH2:19][O:1][C:2]3[C:6]([CH2:7][C:8]([OH:10])=[O:9])=[CH:5][N:4]([C:12]4[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=4)[N:3]=3)=[CH:21][C:22]=2[O:39][CH3:40])[N:27]=1

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 223445974-(4-Chloromethyl-2-methoxyphenoxymethyl)-2-(2-furyl)-5-methyloxazoleHCID 178499543HCID 178499543, Verbindung

Produkt 1

HCID 69216430[3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acidAusbeute 88 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

A mixture of methyl (3-hydroxy-1-phenyl-1H-pyrazol-4-yl)acetate (406 mg), 4-(4-chloromethyl-2-methoxyphenoxymethyl)-2-(2-furyl)-5-methyloxazole (551 mg), potassium carbonate (484 mg) and N,N-dimethylformamide (10 ml) was stirred at 60° C. for 4 hrs. The reaction mixture was poured into water and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. A mixture of the obtained colorless crystals, 1N aqueous sodium hydroxide solution (2 ml), tetrahydrofuran (4 ml) and methanol (4 ml) was stirred at room temperature for 1 hr. 1N Hydrochloric acid (2 ml) was added to the reaction mixture and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. The obtained colorless crystals were collected by filtration to give [3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acid (748 mg, yield 88%). The crystals were recrystallized from ethyl acetate-hexane. melting point: 179–180° C.

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. additionA mixture of the obtained colorless crystals, 1N aqueous sodium hydroxide solution (2 ml), tetrahydrofuran (4 ml) and methanol (4 ml)
  6. stirringwas stirred at room temperature for 1 hr
  7. addition1N Hydrochloric acid (2 ml) was added to the reaction mixture
  8. extractionthe mixture was extracted with ethyl acetate
  9. washThe ethyl acetate layer was washed with saturated brine
  10. dry with materialdried (MgSO4)
  11. concentrationconcentrated
  12. filtrationThe obtained colorless crystals were collected by filtration

Quellen und Nachweise

ORD-Eintrag
ord-8da087c771574351839f606155092d9c
Quelldatensatz
uspto-grants-2007_07
Patentnummer
US07241785B2

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