Acetone → 4-Bromo-2-{[(3,5-dichlorophenyl)amino]methyl}phenol

HRID 421015

反応式

HRID 421015 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:15]=[C:16]([Cl:18])[CH:17]=1)[N:5]=[CH:6][C:7]1[CH:12]=[C:11]([Br:13])[CH:10]=[CH:9][C:8]=1[OH:14].[BH4-].[Na+].CC(C)=O.O>O1CCCC1.C(O)C>[Br:13][C:11]1[CH:10]=[CH:9][C:8]([OH:14])=[C:7]([CH2:6][NH:5][C:4]2[CH:15]=[C:16]([Cl:18])[CH:17]=[C:2]([Cl:1])[CH:3]=2)[CH:12]=1

参加物

7

反応物 4

HCID 180AcetoneHCID 962WaterHCID 7101644-Bromo-2-{[(3,5-dichlorophenyl)imino]methyl}phenolHCID 4311764Sodium borohydride

生成物 1

HCID 6772974-Bromo-2-{[(3,5-dichlorophenyl)amino]methyl}phenol収率 93.3%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

3,5-Dichloro-N-(5-bromo-2-hydroxybenzylidene)aniline (1.04 g, 3 mmol) was dissolved in tetrahydrofuran (12 mL) and ethanol (6 mL). Sodium borohydride (113 mg, 3 mmol) was added under ice cooling and argon atmosphere, and the mixture was stirred at room temperature for 12 hours. Acetone (10 mL) was added to the reaction mixture, and the residue obtained by concentration under reduced pressure was added water and extracted with dichloromethane. After the dichloromethane layer was washed with water and brine one after another, dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure. The obtained residue was purified by column chromatography on silica gel (n-hexane:ethyl acetate=4:1) to give a light yellow viscous material. This was crystallized by n-hexane to give the title compound (971 mg, 93.3%) as a white crystal.

後処理

  1. customthe residue obtained by concentration under reduced pressure
  2. extractionextracted with dichloromethane
  3. washAfter the dichloromethane layer was washed with water and brine one after another,
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was evaporated under reduced pressure
  6. customThe obtained residue was purified by column chromatography on silica gel (n-hexane:ethyl acetate=4:1)
  7. customto give a light yellow viscous material
  8. customThis was crystallized by n-hexane

出典と根拠

ORDレコード
ord-f04ae2982aff4298935d24c12f2c64b8
出典データセット
uspto-grants-2012_01
特許番号
US08097759B2

関連ノート

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