Potassium Carbonate → Methyl 7-(4-butoxyphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate

HRID 1978598Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1978598
Br[C:2]1[CH:3]=[CH:4][C:5]2[S:11](=[O:13])(=[O:12])[CH2:10][CH2:9][C:8]([C:14]([O:16][CH3:17])=[O:15])=[CH:7][C:6]=2[CH:18]=1.B([O-])([O-])O[C:21]1[CH:26]=[CH:25][C:24]([O:27][CH2:28][CH2:29][CH2:30][CH3:31])=[CH:23][CH:22]=1.C(=O)([O-])[O-].[K+].[K+]>C1(C)C=CC=CC=1.C(O)C.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>[CH2:28]([O:27][C:24]1[CH:25]=[CH:26][C:21]([C:2]2[CH:3]=[CH:4][C:5]3[S:11](=[O:13])(=[O:12])[CH2:10][CH2:9][C:8]([C:14]([O:16][CH3:17])=[O:15])=[CH:7][C:6]=3[CH:18]=2)=[CH:22][CH:23]=1)[CH2:29][CH2:30][CH3:31]

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 21995732Methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylateHCID 86756778HCID 86756778, Verbindung

Produkt 1

HCID 21995746Methyl 7-(4-butoxyphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylateAusbeute 79,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 86587398Ethanol toluene waterLösungsmittel

Versuchsvorschrift

Under argon atmosphere, a mixture of methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (0.70 g), 4-butoxyphenyl borate (0.45 g) and potassium carbonate (0.58 g) in toluene/ethanol/water (20/2/2 ml) was stirred at room temperature for 1 hour. To the mixture was added tetrakistriphenylphosphinepalladium (0.12 g), and the mixture was refluxed for 20 hours, cooled, extracted with ethyl acetate, washed with saturated brine, dried with magnesium sulfate and concentrated under reduced pressure. The residue was purified with column chromatography (ethyl acetate/hexane=1:1) to give colorless crystals of methyl 7-(4-butoxyphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (672.6 mg).

Aufarbeitung

  1. temperaturethe mixture was refluxed for 20 hours
  2. temperaturecooled
  3. extractionextracted with ethyl acetate
  4. washwashed with saturated brine
  5. dry with materialdried with magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified with column chromatography (ethyl acetate/hexane=1:1)

Quellen und Nachweise

ORD-Eintrag
ord-519ecddd43c24273ba124cfd5f4d259a
Quelldatensatz
uspto-grants-2001_05
Patentnummer
US06235771B1

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