Potassium Carbonate → HCID 18472441, 화합물

HRID 1387948노트

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HRID 1387948 반응식
[CH3:1][N:2]([O:11][CH3:12])[C:3]([C:5]1[O:6][C:7](Br)=[CH:8][CH:9]=1)=[O:4].B([O-])([O-])O[C:15]1[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=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>[CH3:1][N:2]([O:11][CH3:12])[C:3]([C:5]1[O:6][C:7]([C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=2)=[CH:8][CH:9]=1)=[O:4]

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 18472462HCID 18472462, 화합물HCID 866453334-Methylphenyl borate

생성물 1

HCID 18472441HCID 18472441, 화합물수율 91.3%

시약·촉매·용매 2

HCID 178418397HCID 178418397, 화합물촉매HCID 66602552Toluene-ethanol water용매

실험 절차

Under argon atmosphere, a solution of N-methyl-N-methoxy-5-bromofuran-2-carboxamide (2.77 g), 4-methylphenyl borate (1.93 g) and potassium carbonate (3.27 g) in toluene-ethanol-water (110-11-11 ml) was stirred at room temperature for 1 hour. To the reaction mixture was added tetrakistriphenylphosphinepalladium (0.41 g), and the mixture was refluxed for 20 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=1:5→1:2→1:1) to give N-methyl-N-methoxy-5-(4-methylphenyl)furan-2-carboxamide (2.65 g) as colorless crystals.

후처리

  1. temperaturethe mixture was refluxed for 20 hours
  2. washThe organic layer was washed with saturated sodium chloride solution
  3. dry with materialdried with magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was separated
  6. custompurified with column chromatography (ethyl acetate/hexane=1:5→1:2→1:1)

출처 및 근거

ORD 기록
ord-a53a162d8a024cb580bfe2caa460f8dc
출처 데이터셋
uspto-grants-2001_07
특허 번호
US06268354B1

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