Imidazole → 3,4-Dimethoxy-5-triisopropylsilanyloxybenzaldehyde

HRID 1161508

反応式

HRID 1161508 の反応式
[OH:1][C:2]1[CH:3]=[C:4]([CH:7]=[C:8]([O:12][CH3:13])[C:9]=1[O:10][CH3:11])[CH:5]=[O:6].N1C=CN=C1.Cl[Si:20]([CH:27]([CH3:29])[CH3:28])([CH:24]([CH3:26])[CH3:25])[CH:21]([CH3:23])[CH3:22].O>CN(C=O)C.C(OCC)(=O)C>[CH3:13][O:12][C:8]1[CH:7]=[C:4]([CH:3]=[C:2]([O:1][Si:20]([CH:27]([CH3:29])[CH3:28])([CH:24]([CH3:26])[CH3:25])[CH:21]([CH3:23])[CH3:22])[C:9]=1[O:10][CH3:11])[CH:5]=[O:6]

参加物

7

反応物 4

HCID 795ImidazoleHCID 962WaterHCID 139400Triisopropylsilyl chlorideHCID 1415133,4-Dimethoxy-5-hydroxybenzaldehyde

生成物 1

HCID 866179213,4-Dimethoxy-5-triisopropylsilanyloxybenzaldehyde

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of 3.2 g of 3-hydroxy-4,5-dimethoxybenzaldehyde in 50 ml of DMF there were added 1.49 g of imidazole and 4.5 ml of chlorotriisopropylsilane. The mixture was stirred at room temperature for 21 hours and 30 minutes. Water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was washed with ice-cooled 1N hydrochloric acid, water, saturated aqueous sodium hydrogencarbonate, water and saturated brine in that order, and dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate-heptane) to give 3,4-dimethoxy-5-triisopropylsilanyloxybenzaldehyde (6.08 g) as a light yellow oil.

後処理

  1. washThe organic layer was washed with ice-
  2. temperaturecooled 1N hydrochloric acid, water, saturated aqueous sodium hydrogencarbonate, water and saturated brine in that order
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationThe desiccating agent was filtered off
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (ethyl acetate-heptane)

出典と根拠

ORDレコード
ord-ce3e7d53c13e4a0590460b96addc9d58
出典データセット
uspto-grants-2010_10
特許番号
US07816522B2

関連ノート

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