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

HRID 566034노트

반응식

HRID 566034 반응식
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[CH:25]=[CH:24][C:23]([S:26][CH3:27])=[CH:22][CH:21]=1.C(=O)([O-])[O-].[K+].[K+]>C1(C)C(CCO)=CC=CC=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>[CH3:27][S:26][C:23]1[CH:24]=[CH:25][C:20]([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:21][CH:22]=1

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 10709089HCID 10709089, 화합물HCID 1317222484-Methylthiophenyl borate

생성물 1

HCID 18472190Ethyl 7-(4-methylthiophenyl)-2,3-dihydro-1-benzoxepine-4-carboxylate수율 38.6%

시약·촉매·용매 2

HCID 178418397HCID 178418397, 화합물촉매2회HCID 66602552Toluene-ethanol water용매

실험 절차

Under argon atmosphere, a solution of ethyl 7-bromo-2,3-dihydro-1-benzoxepine-4-carboxylate (1.0 g), 4-methylthiophenyl 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-methylthiophenyl)-2,3-dihydro-1-benzoxepine-4-carboxylate (442 mg) as colorless crystals.

후처리

  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)

출처 및 근거

ORD 기록
ord-6a6d97f23d8c45ff8ed2b937f2fdb42e
출처 데이터셋
uspto-grants-2001_01
특허 번호
US06172061B2

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