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

HRID 1978592Notes

Reaction equation

HRID 1978592 reaction equation
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]([CH2:27][CH2:28][CH3:29])=[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>[CH2:27]([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)[CH2:28][CH3:29]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 21995732Methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylateHCID 867567754-Propylphenyl borate

Product 1

HCID 21995893Methyl 7-(4-propylphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylateYield 62.3%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 86587398Ethanol toluene waterSolvent

Procedure

Under argon atmosphere, a mixture of methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (0.80 g), 4-propylphenyl borate (0.435 g) and potassium carbonate (0.67 g) in toluene/ethanol/water (25/2.5/2.5 ml) was stirred at room temperature for 1 hour. To the mixture was added tetrakistriphenylphosphinepalladium (0.14 g), and the mixture was refluxed for 18 hours, cooled, extracted with ethyl acetate, washed with saturated brine, dried with magnesium sulfate and concentrated under reduced pressure. Precipitated crystals were collected by filtration and the crystals were washed with ethyl acetate, diisopropylether and hexane to give colorless crystals of methyl 7-(4-propylphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (557.2 mg).

Workup

  1. temperaturethe mixture was refluxed for 18 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. customPrecipitated crystals
  8. filtrationwere collected by filtration
  9. washthe crystals were washed with ethyl acetate, diisopropylether and hexane

Sources & evidence

ORD record
ord-4999cc22da26475d8779e621387d7f36
Source dataset
uspto-grants-2001_05
Patent number
US06235771B1

Reaction notes

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