N-bromobutanimide → 1-Bromo-8-(4-fluoro-phenoxy)-4-hydroxy-isoquinoline-3-carboxylic acid methyl ester

HRID 2077129ノート

反応式

HRID 2077129 の反応式
[CH3:1][O:2][C:3]([C:5]1[N:6]=[CH:7][C:8]2[C:13]([C:14]=1[OH:15])=[CH:12][CH:11]=[CH:10][C:9]=2[O:16][C:17]1[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=1)=[O:4].[Br:24]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([Br:24])[C:8]2[C:13]([C:14]=1[OH:15])=[CH:12][CH:11]=[CH:10][C:9]=2[O:16][C:17]1[CH:18]=[CH:19][C:20]([F:23])=[CH:21][CH:22]=1)=[O:4]

参加物

5

反応物 2

HCID 67184N-bromobutanimideHCID 671104788-(4-Fluoro-phenoxy)-4-hydroxy-isoquinoline-3-carboxylic acid methyl ester

生成物 1

HCID 866170631-Bromo-8-(4-fluoro-phenoxy)-4-hydroxy-isoquinoline-3-carboxylic acid methyl ester収率 55.5%

試薬・触媒・溶媒 2

HCID 7187Benzoyl Peroxide触媒HCID 5943Carbon Tetrachloride溶媒

実験手順

A mixture of 8-(4-fluoro-phenoxy)-4-hydroxy-isoquinoline-3-carboxylic acid methyl ester (1.21 g, 3.87 mmol), N-bromosuccinimide (723 mg, 4.06 mmol) and benzoyl peroxide (47 mg, 0.19 mmol) in carbon tetrachloride (20 mL) was refluxed for 4 h before it was cooled to room temperature and partitioned between dichloromethane and water. The organic layer was washed with saturated aqueous sodium bicarbonate, brine, and was dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel with a gradient of dichloromethane and hexane to give the title compound as a pale yellow solid (843 mg): MS: (+) m/z 392.00, 393.93 (M+1, 79Br/81Br).

後処理

  1. temperaturewas refluxed for 4 h before it
  2. custompartitioned between dichloromethane and water
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate, brine
  4. dry with materialwas dried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by flash column chromatography on silica gel with a gradient of dichloromethane and hexane

出典と根拠

ORDレコード
ord-1a1951722dd4450f96d39ab7f67b1244
出典データセット
uspto-grants-2011_04
特許番号
US07928120B2

反応ノート

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