Ethyl Acetate → 8-(5-Fluoro-2-methylphenoxymethyl)-7-(2-methoxy-4-trifluoromethoxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

HRID 1038491ノート

反応式

HRID 1038491 の反応式
Br[C:2]1[C:11]([CH2:12][O:13][C:14]2[CH:19]=[C:18]([F:20])[CH:17]=[CH:16][C:15]=2[CH3:21])=[C:10]2[C:5]([NH:6][C:7]([CH3:25])([CH3:24])[C:8](=[O:23])[N:9]2[CH3:22])=[CH:4][CH:3]=1.[CH3:26][O:27][C:28]1[CH:33]=[C:32]([O:34][C:35]([F:38])([F:37])[F:36])[CH:31]=[CH:30][C:29]=1B(O)O.C(=O)([O-])[O-].C(OCC)(=O)C>CN(C)C=O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O>[F:20][C:18]1[CH:17]=[CH:16][C:15]([CH3:21])=[C:14]([CH:19]=1)[O:13][CH2:12][C:11]1[C:2]([C:29]2[CH:30]=[CH:31][C:32]([O:34][C:35]([F:37])([F:38])[F:36])=[CH:33][C:28]=2[O:27][CH3:26])=[CH:3][CH:4]=[C:5]2[C:10]=1[N:9]([CH3:22])[C:8](=[O:23])[C:7]([CH3:25])([CH3:24])[NH:6]2

参加物

8

反応物 4

HCID 8857Ethyl AcetateHCID 19660Carbonate IonHCID 22490042(2-Methoxy-4-(trifluoromethoxy)phenyl)boronic acidHCID 247811517-Bromo-8-(5-fluoro-2-methylphenoxymethyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

生成物 1

HCID 576719048-(5-Fluoro-2-methylphenoxymethyl)-7-(2-methoxy-4-trifluoromethoxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one収率 83.3%

試薬・触媒・溶媒 3

HCID 178418476HCID 178418476、化合物触媒HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

A mixture of 7-bromo-8-(5-fluoro-2-methylphenoxymethyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one (Reference Compound No. 8-1, 49.7 mg, mmol), 2-methoxy-4-trifluoromethoxyphenylboronic acid (58.1 mg, 0.246 mmol), cessium carbonate (119 mg, 0.36 mmol) and bis(triphenylphosphin)palladium (II) dichloride (12.0 mg, 0.0171 mmol) was suspended in anhydrous N,N-dimethylformamide (0.5 ml) and stirred at 80° C. for 2 hours under argon atomosphere. After cooling down, ethyl acetate (100 mL) and water (100 mL) was added and partitioned. The organic layer was washed with saturated brine (50 mL), dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled compound (52.7 mg) as a colorless amorphous product. (Yield 58%)

後処理

  1. temperatureAfter cooling down
  2. custompartitioned
  3. washThe organic layer was washed with saturated brine (50 mL)
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was removed under reduced pressure
  6. customThe obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate)

出典と根拠

ORDレコード
ord-b051aac8d18546b9be61ee08efe55b26
出典データセット
uspto-grants-2013_10
特許番号
US08551991B2

反応ノート

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