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Potassium Carbonate → Ethyl 7-(4-methylthiophenyl)-2,3-dihydro-1-benzoxepine-4-carboxylate

HRID 2228224
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2228224
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:11][CH2:10][CH2:9][C:8]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:7][C:6]=2[CH:17]=1.B([O-])([O-])O[C:20]1[S:21][CH:22]=[C:23]([CH3:25])[CH:24]=1.C(=O)([O-])[O-].[K+].[K+].[C:34]1(C)C(CCO)=CC=C[CH:39]=1.O>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:22][S:21][C:20]1[CH:39]=[CH:34][C:25]([C:2]2[CH:3]=[CH:4][C:5]3[O:11][CH2:10][CH2:9][C:8]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:7][C:6]=3[CH:17]=2)=[CH:23][CH:24]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 11430Potassium CarbonateHCID 10709089HCID 10709089, VerbindungHCID 66602552Toluene-ethanol waterHCID 867561744-Methyl-thiophenyl borate

Produkt 1

HCID 18472190Ethyl 7-(4-methylthiophenyl)-2,3-dihydro-1-benzoxepine-4-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 178418397
HCID 178418397, Verbindung
Katalysator
2×

Versuchsvorschrift

Under argon atmosphere, a solution of ethyl 7-bromo-2,3-dihydro-1-benzoxepine-4-carboxylate (1.0 g), 4-methyl-thiophenyl borate (622 mg) and potassium carbonate (0.93 g) in toluene-ethanol-water (30-3-3 ml) was stirred at room temperature for 1 hour. To the reaction mixture was added tetrakistriphenyl-phosphinepalladium (117 mg), and the mixture was refluxed for 16 hours. To the reaction mixture was added tetrakistriphenyl-phosphinepalladium (0.13 g), and the mixture was refluxed for 24 hours and cooled to room temperature. The organic layer was washed with saturated sodium chloride solution, dried with magnesium sulfate and concentrated under reduced pressure. The residue was separated and purified with column chromatography (ethyl acetate/hexane=1:10) to give ethyl 7-(4-methylthio-phenyl)-2,3-dihydro-1-benzoxepine-4-carboxylate (442 mg) as colorless crystals.

Aufarbeitung

  1. temperaturethe mixture was refluxed for 16 hours
  2. temperaturethe mixture was refluxed for 24 hours
  3. washThe organic layer was washed with saturated sodium chloride solution
  4. dry with materialdried with magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was separated
  7. custompurified with column chromatography (ethyl acetate/hexane=1:10)

Quellen und Nachweise

ORD-Eintrag
ord-c407a16fb19044d0ad5064b89c279149
Quelldatensatz
uspto-grants-2002_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06413947B1

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