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Water → 2-cyclopropylmethyl-4-[2,2-di(tert-butoxycarbonyl)ethyl]-6-(3-fluoro-4-methoxyphenyl)-2H-pyridazin-3-one

HRID 8039
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 8039
[H-].[Na+].[C:3]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])(=[O:12])[CH2:4][C:5]([O:7][C:8]([CH3:11])([CH3:10])[CH3:9])=[O:6].Br[CH2:19][C:20]1[C:21](=[O:39])[N:22]([CH2:35][CH:36]2[CH2:38][CH2:37]2)[N:23]=[C:24]([C:26]2[CH:31]=[CH:30][C:29]([O:32][CH3:33])=[C:28]([F:34])[CH:27]=2)[CH:25]=1.O>CN(C)C=O>[CH:36]1([CH2:35][N:22]2[C:21](=[O:39])[C:20]([CH2:19][CH:4]([C:5]([O:7][C:8]([CH3:9])([CH3:10])[CH3:11])=[O:6])[C:3]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])=[CH:25][C:24]([C:26]3[CH:31]=[CH:30][C:29]([O:32][CH3:33])=[C:28]([F:34])[CH:27]=3)=[N:23]2)[CH2:38][CH2:37]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 962WaterHCID 24758Sodium hydrideHCID 68324Di-tert-butyl malonateHCID 219917104-bromomethyl-2-cyclopropylmethyl-6-(3-fluoro-4-methoxyphenyl)-2H-pyridazin-3-one

Produkt 1

HCID 219916102-cyclopropylmethyl-4-[2,2-di(tert-butoxycarbonyl)ethyl]-6-(3-fluoro-4-methoxyphenyl)-2H-pyridazin-3-oneAusbeute 61,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

After 55% sodium hydride (322 mg, 7.38 mmol) was added to a solution of di-tert-butyl malonate (970 mg, 4.48 mmol) in N,N-dimethylformamide (10 mL), 4-bromomethyl-2-cyclopropylmethyl-6-(3-fluoro-4-methoxyphenyl)-2H-pyridazin-3-one (1.8 g, 4.90 mmol) was added under ice-cold stirring. The reaction mixture was stirred at room temperature for 1 hour, poured into water, and extracted with ethyl acetate. The extract was washed with brine and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure. The residue was isolated and purified by column chromatography on silica gel (hexane/ethyl acetate=3/1) to yield the title compound as a yellow powder (yield: 1.39 mg, 61.8%).

Aufarbeitung

  1. additionwas added under ice-cold stirring
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customThe residue was isolated
  7. custompurified by column chromatography on silica gel (hexane/ethyl acetate=3/1)

Quellen und Nachweise

ORD-Eintrag
ord-64b894aee23246cebcc958882c411997
Quelldatensatz
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07087606B2

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