Sodium sulfate decahydrate → (2E)-3-{3-[(4-([2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}-2-propen-1-ol

HRID 2221818Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2221818
[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:41])=[C:9]([CH2:11][O:12][C:13]2[CH:38]=[CH:37][C:16]([CH2:17][O:18][C:19]3[C:23](/[CH:24]=[CH:25]/[C:26](OCC)=[O:27])=[CH:22][N:21]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)[N:20]=3)=[CH:15][C:14]=2[O:39][CH3:40])[N:10]=1.[H-].C([Al+]CC(C)C)C(C)C.O.O.O.O.O.O.O.O.O.O.S([O-])([O-])(=O)=O.[Na+].[Na+]>O1CCCC1.C(OCC)(=O)C>[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:41])=[C:9]([CH2:11][O:12][C:13]2[CH:38]=[CH:37][C:16]([CH2:17][O:18][C:19]3[C:23](/[CH:24]=[CH:25]/[CH2:26][OH:27])=[CH:22][N:21]([C:31]4[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=4)[N:20]=3)=[CH:15][C:14]=2[O:39][CH3:40])[N:10]=1

Komponenten

6

Edukt 3

HCID 62649Sodium sulfate decahydrateHCID 21225700DiisobutylaluminumhydrideHCID 86605776ethyl (2E)-3-{3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}-2-propenoate

Produkt 1

HCID 69218176(2E)-3-{3-[(4-([2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}-2-propen-1-olAusbeute 59 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a solution of ethyl (2E)-3-{3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}-2-propenoate (0.55 g) in tetrahydrofuran (50 mL) was added diisobutylaluminum hydride (0.95 M hexane solution, 6.3 mL) at 0° C., and the mixture was stirred at room temperature for 3 hrs. Sodium sulfate decahydrate (1.91 g) was added to the reaction mixture, and the mixture was stirred at room temperature for 30 min. The reaction mixture was diluted with ethyl acetate and the precipitate was filtered off, and the filtrate was concentrated. The residue was subjected to silica gel column chromatography to give (2E)-3-{3-[(4-([2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1-phenyl-1H-pyrazol-4-yl}-2-propen-1-ol as colorless crystals (0.30 g, yield 59%) from a fraction eluted with ethyl acetate-hexane (1:1, v/v). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 120-121° C.

Aufarbeitung

  1. stirringthe mixture was stirred at room temperature for 30 min
  2. filtrationthe precipitate was filtered off
  3. concentrationthe filtrate was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-1168821b6be34ae097e92ab27dcd4eb1
Quelldatensatz
uspto-grants-2008_05
Patentnummer
US07368578B2

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