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Sodium hydride → Ethyl 2-[7-acetyl-7-(p-toluoylamino)heptyloxy]-2-methylpropionate

HRID 1794261
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1794261
[H-].[Na+].[C:3]1([CH3:16])[CH:8]=[CH:7][C:6]([C:9]([NH:11][CH2:12][C:13](=[O:15])[CH3:14])=[O:10])=[CH:5][CH:4]=1.I[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][O:24][C:25]([CH3:32])([CH3:31])[C:26]([O:28][CH2:29][CH3:30])=[O:27]>CN(C)C=O>[C:13]([CH:12]([NH:11][C:9]([C:6]1[CH:5]=[CH:4][C:3]([CH3:16])=[CH:8][CH:7]=1)=[O:10])[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][O:24][C:25]([CH3:31])([CH3:32])[C:26]([O:28][CH2:29][CH3:30])=[O:27])(=[O:15])[CH3:14]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 21866667Ethyl 2-(6-iodohexyloxy)-2-methylpropionateHCID 218667451-(p-Toluoylamino)-2-propanone

Produkt 1

HCID 21866665Ethyl 2-[7-acetyl-7-(p-toluoylamino)heptyloxy]-2-methylpropionateAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel
3×

Versuchsvorschrift

A suspension (70 ml) of 1.81 g of 60% sodium hydride in N,N-dimethylformamide was cooled to −18° C. with ice-sodium chloride bath, and 21 ml of a solution of 8.67 g of 1-(p-toluoylamino)-2-propanone in N,N-dimethylformamide was added slowly. After 1-hour-stirring, 21 ml of a solution of 14.10 g of ethyl 2-(6-iodohexyloxy)-2-methylpropionate in N,N-dimethylformamide was added dropwise slowly. The bath was removed and the mixture was stirred for additional-18 hours at room temperature. The reaction solution was, after addition of ice-cold water, extracted with ethyl acetate, washed with water and brine sequentially, dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (Wakogel® C-200, n-hexane:ethyl acetate=3:1) to provide 12.20 g of the objective compound as yellow crystals.

Aufarbeitung

  1. customThe bath was removed
  2. stirringthe mixture was stirred for additional-18 hours at room temperature
  3. additionafter addition of ice-cold water
  4. extractionextracted with ethyl acetate
  5. washwashed with water and brine sequentially
  6. dry with materialdried over anhydrous magnesium sulfate
  7. distillationthe solvent was distilled off under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (Wakogel® C-200, n-hexane:ethyl acetate=3:1)

Quellen und Nachweise

ORD-Eintrag
ord-2508acc8e9384b04b960d1b7037a1d43
Quelldatensatz
uspto-grants-2006_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07022723B2

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