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

HRID 1978582ノート

反応式

HRID 1978582 の反応式
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]([C:27]([CH3:30])([CH3:29])[CH3:28])=[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>[C: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)([CH3:30])([CH3:29])[CH3:28]

参加物

6

反応物 3

HCID 11430Potassium CarbonateHCID 21995732Methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylateHCID 867561654-Tert-butylphenyl borate

生成物 1

HCID 21995703Methyl 7-(4-tert-butylphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate収率 85.4%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 86587398Ethanol toluene water溶媒

実験手順

Under argon atmosphere, a mixture of methyl 7-bromo-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (0.80 g), 4-tert-butylphenyl borate (0.47 g) and potassium carbonate (0.67 g) in toluene/ethanol/water (30/3/3 ml) was stirred at room temperature for 1 hour. To the mixture was added tetrakistriphenylphosphinepalladium (0.14 g), and the mixture was refluxed for 16 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) and recrystallized from ethyl acetate/diisopropylether to give colorless crystals of methyl 7-(4-tert-butylphenyl)-1,1-dioxo-2,3-dihydro-1-benzothiepine-4-carboxylate (793.6 mg).

後処理

  1. temperaturethe mixture was refluxed for 16 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)
  8. customrecrystallized from ethyl acetate/diisopropylether

出典と根拠

ORDレコード
ord-8354f331bc5948889646319205f07484
出典データセット
uspto-grants-2001_05
特許番号
US06235771B1

反応ノート

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