Cesium carbonate → 4-chloro-1-(4-methoxybutyl)-2-phenyl-1H-imidazole-5-carbaldehyde

HRID 1184212ノート

反応式

HRID 1184212 の反応式
[Cl:1][C:2]1[N:3]=[C:4]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[NH:5][C:6]=1[CH:7]=[O:8].CS(O[CH2:20][CH2:21][CH2:22][CH2:23][O:24][CH3:25])(=O)=O.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C(=O)C.O>[Cl:1][C:2]1[N:3]=[C:4]([C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=2)[N:5]([CH2:20][CH2:21][CH2:22][CH2:23][O:24][CH3:25])[C:6]=1[CH:7]=[O:8]

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 116870064-Methoxybutyl methanesulfonateHCID 178520008HCID 178520008、化合物

生成物 1

HCID 583555004-chloro-1-(4-methoxybutyl)-2-phenyl-1H-imidazole-5-carbaldehyde収率 99.1%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 31374Dimethylacetamide溶媒

反応条件

温度
90 °C

実験手順

To a solution of 4-chloro-2-phenyl-1H-imidazole-5-carbaldehyde (500 mg) and 4-methoxybutyl methanesulfonate (660 mg) in N,N-dimethylacetamide (10 ml) was added cesium carbonate (2.4 g), and the mixture was stirred at 90° C. for 7 hr. After cooling to room temperature, the reaction mixture was diluted with water and extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate-hexane (5:95-3:7) was concentrated under reduced pressure to give the object product (702 mg).

後処理

  1. temperatureAfter cooling to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. washa fraction eluted with ethyl acetate-hexane (5:95-3:7)
  7. concentrationwas concentrated under reduced pressure

出典と根拠

ORDレコード
ord-70ef542e49fb43afae81acff5e9b016f
出典データセット
uspto-grants-2014_03
特許番号
US08664380B2

反応ノート

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