Potassium Carbonate → Tert-butyl 1-methyl-7-(4-methylphenyl)-2,3-dihydro-1-benzoazepine-4-carboxylate

HRID 1277298Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1277298
B([O-])([O-])O[C:3]1[CH:8]=[CH:7][C:6]([CH3:9])=[CH:5][CH:4]=1.Br[C:13]1[CH:14]=[CH:15][C:16]2[N:22]([CH3:23])[CH2:21][CH2:20][C:19]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])=[CH:18][C:17]=2[CH:31]=1.C(=O)([O-])[O-].[K+].[K+]>O.C(O)C.C1(C)C=CC=CC=1.C(OCC)(=O)C>[CH3:23][N:22]1[C:16]2[CH:15]=[CH:14][C:13]([C:3]3[CH:8]=[CH:7][C:6]([CH3:9])=[CH:5][CH:4]=3)=[CH:31][C:17]=2[CH:18]=[C:19]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:20][CH2:21]1

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 18472450HCID 18472450, VerbindungHCID 866453334-Methylphenyl borate

Produkt 1

HCID 18472637Tert-butyl 1-methyl-7-(4-methylphenyl)-2,3-dihydro-1-benzoazepine-4-carboxylateAusbeute 72 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8857Ethyl AcetateLösungsmittelHCID 86587398Ethanol toluene waterLösungsmittel

Versuchsvorschrift

In water:ethanol:toluene (1:1:10, 18.0 ml) were dissolved 4-methylphenyl borate (276 mg) and tert-butyl 7-bromo-1-methyl-2,3-dihydro-1-benzoazepine-4-carboxylate (571 mg), and to the mixture was added potassium carbonate (560 mg). The mixture was stirred under argon atmosphere for 30 minutes, and to the mixture was added tetrakistriphenylphosphine palladium (78 mg). Under argon atmosphere, the mixture was refluxed for 19.5 hours. The mixture was diluted with ethyl acetate (300 ml) and washed with water (100 ml) and saturated brine (100 ml). The organic layer was dried with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified with silica gel column chromatography (120 g, hexane→hexane:ethyl acetate=10:1) to give tert-butyl 1-methyl-7-(4-methylphenyl)-2,3-dihydro-1-benzoazepine-4-carboxylate (422 mg, 72%).

Aufarbeitung

  1. temperatureUnder argon atmosphere, the mixture was refluxed for 19.5 hours
  2. washwashed with water (100 ml) and saturated brine (100 ml)
  3. dry with materialThe organic layer was dried with anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified with silica gel column chromatography (120 g, hexane→hexane:ethyl acetate=10:1)

Quellen und Nachweise

ORD-Eintrag
ord-35addf5e39ae4482b4d6b70e78206b34
Quelldatensatz
uspto-grants-2000_12
Patentnummer
US06166006

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