Potassium Carbonate → HCID 18472441, 화합물

HRID 1277193노트

반응식

HRID 1277193 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-48d5a938daa24c9dbe4d891c12123f42
출처 데이터셋
uspto-grants-2000_12
특허 번호
US06166006

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