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Acetyl chloride → N-[1-(4-Chloro-benzoyl)-5-methoxy-2-methyl-1H-indol-3-ylmethyl]-N-hydroxy-acetamide

HRID 703223
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 703223
[Cl:1][C:2]1[CH:24]=[CH:23][C:5]([C:6]([N:8]2[C:16]3[C:11](=[CH:12][C:13]([O:17][CH3:18])=[CH:14][CH:15]=3)[C:10]([CH2:19][NH:20][OH:21])=[C:9]2[CH3:22])=[O:7])=[CH:4][CH:3]=1.[C:25]([O-])(=[O:27])[CH3:26].[Na+].C(Cl)(=O)C>O1CCOCC1.O.C(OCC)(=O)C>[Cl:1][C:2]1[CH:24]=[CH:23][C:5]([C:6]([N:8]2[C:16]3[C:11](=[CH:12][C:13]([O:17][CH3:18])=[CH:14][CH:15]=3)[C:10]([CH2:19][N:20]([OH:21])[C:25](=[O:27])[CH3:26])=[C:9]2[CH3:22])=[O:7])=[CH:4][CH:3]=1
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Komponenten

7

Edukt 3

HCID 6367Acetyl chloride2×HCID 517045Sodium AcetateHCID 150273901-(4-Chlorobenzoyl)-N-hydroxy-5-methoxy-2-methyl-1H-indole-3-methanamine

Produkt 1

HCID 15027391N-[1-(4-Chloro-benzoyl)-5-methoxy-2-methyl-1H-indol-3-ylmethyl]-N-hydroxy-acetamideAusbeute 47,6 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962
Water
Lösungsmittel
HCID 8857Ethyl AcetateLösungsmittel
HCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

To a suspension of 1-(4-chlorobenzoyl)-N-hydroxy-5-methoxy-2-methyl-1H-indole-3-methanamine (1,2 g, 3.5 mmol) and sodium acetate (730 mg, 8.9 mmol) in 120 ml of 1,4-dioxane and 30 ml of water is added dropwise acetyl chloride (420 μl, 5.9 mmol) at 0° C. After 10 minutes additional acetyl chloride (40 μl, 0.6 mmol) is added. The reaction mixture is stirred for 15 minutes, and then is diluted with ethyl acetate. It is washed once with a dilute solution of sodium bicarbonate, once with water, and a saturated solution of sodium chloride. The organic phase is further dried over magnesium sulfate, filtered, and concentrated in vacuo. The residue is purified by column chromatography on silica gel, eluting first with 1:4 ethyl acetate:methylene chloride then 1:1 ethyl acetate:methylene chloride. Recrystallization from isopropyl ether gives N-[[1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]methyl]-N-hydroxy-acetamide (645 mg, 47%); mp 160°-161° C.

Aufarbeitung

  1. washIt is washed once with a dilute solution of sodium bicarbonate, once with water
  2. dry with materialThe organic phase is further dried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue is purified by column chromatography on silica gel
  6. washeluting first with 1:4 ethyl acetate
  7. customRecrystallization from isopropyl ether

Quellen und Nachweise

ORD-Eintrag
ord-95e1fdd85b27457bbbeb0cf16eb81997
Quelldatensatz
uspto-grants-1991_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04981865

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