Potassium Carbonate → 6-(2,6-Dimethoxyphenyl)-1,1,4,4-tetramethy-1,2,3,4-tetrahydronaphthalene

HRID 488823

반응식

HRID 488823 반응식
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[C:5]([O:9][CH3:10])[C:4]=1B(O)O.Br[C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[C:21]([CH3:26])([CH3:25])[CH2:20][CH2:19][C:18]2([CH3:28])[CH3:27].C(=O)([O-])[O-].[K+].[K+]>COCCOC.O.C(OCC)(=O)C.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][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[C:5]([O:9][CH3:10])[C:4]=1[C:24]1[CH:23]=[C:22]2[C:17](=[CH:16][CH:15]=1)[C:18]([CH3:28])([CH3:27])[CH2:19][CH2:20][C:21]2([CH3:26])[CH3:25]

참가 물질

8

반응물 3

HCID 11430Potassium CarbonateHCID 2266856-Bromo-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthaleneHCID 2734343(2,6-Dimethoxyphenyl)boronic acid

생성물 1

HCID 211069166-(2,6-Dimethoxyphenyl)-1,1,4,4-tetramethy-1,2,3,4-tetrahydronaphthalene수율 103.5%

시약·촉매·용매 4

HCID 178418397HCID 178418397, 화합물촉매HCID 962Water용매HCID 80711,2-Dimethoxyethane용매HCID 8857Ethyl Acetate용매

실험 절차

A mixture of 2,6-dimethoxy-phenylboronic acid (1.0 g, 5.48 mmol), 6-bromo-1,1,4,4 tetramethy 1,2,3,4-tetrahydronaphthalene (0.73 g, 2.74 mmol) and potassium carbonate (1.50 g, 10.96 mmol) in 1,2-dimethoxyethane (20 mL) and water (1.0 mL) was degassed with argon for 15 minutes. Tetrakis(triphenylphosphine)palladium(0) (0.60 g, 0.54 mmol) was added and the mixture heated at reflux under argon for 5 hours. The solution was cooled to room temperature, diluted with ethyl acetate and washed successively with water and brine, dried over anhydrous magnesium sulfate, filtered and evaporated. The residue was chromatographed on silica gel (eluent: ethyl acetate/hexane, 1:9) to give 0.92 g of 6-(2,6-Dimethoxyphenyl)-1,1,4,4-tetramethy-1,2,3,4-tetrahydronaphthlene.

후처리

  1. customwas degassed with argon for 15 minutes
  2. temperaturethe mixture heated
  3. temperatureat reflux under argon for 5 hours
  4. washwashed successively with water and brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was chromatographed on silica gel (eluent: ethyl acetate/hexane, 1:9)

출처 및 근거

ORD 기록
ord-5cd3d5092cda4ff0ace1b642d279ab91
출처 데이터셋
uspto-grants-2005_12
특허 번호
US06974826B2

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