Ethyl Acetate → N-(2-t-Butyl-5-carboxyphenyl)-3-(4-acetyl-2-methoxyphenyl)octanamide

HRID 1637544Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1637544
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]([O:13]C)=[O:12])=[CH:7][C:6]=1[NH:15][C:16](=[O:34])[CH2:17][CH:18]([C:24]1[CH:29]=[CH:28][C:27]([CH:30]=[O:31])=[CH:26][C:25]=1[O:32][CH3:33])[CH2:19][CH2:20][CH2:21][CH2:22][CH3:23])([CH3:4])([CH3:3])[CH3:2].[CH3:35][Mg]Br.[Cl-].[NH4+].C(OCC)(=O)C>O1CCCC1.CCCCCC>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]([OH:13])=[O:12])=[CH:7][C:6]=1[NH:15][C:16](=[O:34])[CH2:17][CH:18]([C:24]1[CH:29]=[CH:28][C:27]([C:30](=[O:31])[CH3:35])=[CH:26][C:25]=1[O:32][CH3:33])[CH2:19][CH2:20][CH2:21][CH2:22][CH3:23])([CH3:3])([CH3:2])[CH3:4]

Komponenten

7

Edukt 4

HCID 8857Ethyl AcetateHCID 25517Ammonium ChlorideHCID 19348464N-(2-t-butyl-5-methoxycarbonylphenyl)-3-(4-formyl-2-methoxyphenyl)octanamideHCID 178418573HCID 178418573, Verbindung

Produkt 1

HCID 19348740N-(2-t-Butyl-5-carboxyphenyl)-3-(4-acetyl-2-methoxyphenyl)octanamideAusbeute 86 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittel2×HCID 8058HexaneLösungsmittel

Versuchsvorschrift

A solution of 537 mg (1.15 mmol) of N-(2-t-butyl-5-methoxycarbonylphenyl)-3-(4-formyl-2-methoxyphenyl)octanamide (prepared as described in Preparation 63A) in 10 ml of tetrahydrofuran was cooled to -78° C., and 4.1 ml (3.9 mmol) of a 0.95 M solution of methylmagnesium bromide in tetrahydrofuran were added dropwise thereto over a period of 5 minutes. The reaction mixture was stirred at the same temperature for 1 hour and then at 0° C. for 90 minutes, after which a saturated aqueous solution of ammonium chloride was added to the mixture to terminate the reaction. The mixture was then extracting with ethyl acetate. The extract was washed with water and with a saturated aqueous solution of sodium chloride, after which it was dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, and the resulting residue was purified by column chromatography through 25 g of silica gel, using a gradient elution method, with mixtures of ethyl acetate and hexane ranging from 1:1 to 3:2 by volume, to give 479 mg (yield 86%) of the title compound as a foam-like substance.

Aufarbeitung

  1. waitat 0° C. for 90 minutes
  2. customto terminate
  3. customthe reaction
  4. extractionThe mixture was then extracting with ethyl acetate
  5. washThe extract was washed with water and with a saturated aqueous solution of sodium chloride
  6. dry with materialafter which it was dried over anhydrous magnesium sulfate
  7. customThe solvent was then removed by distillation under reduced pressure
  8. customthe resulting residue was purified by column chromatography through 25 g of silica gel
  9. washa gradient elution method

Quellen und Nachweise

ORD-Eintrag
ord-62470737e5664dbeb444d8df59052a56
Quelldatensatz
uspto-grants-2000_03
Patentnummer
US06040339

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