Methanol → HCID 20701369、化合物

HRID 428134ノート

反応式

HRID 428134 の反応式
C[O:2][C:3]1[CH:4]=[C:5]([CH:20]=[CH:21][C:22]=1[O:23]C)[CH2:6][CH2:7][N:8]([CH3:19])[C:9](=[O:18])/[CH:10]=[CH:11]/[C:12]1[CH:13]=[N:14][CH:15]=[CH:16][CH:17]=1.B(Br)(Br)Br.ClCCl.CO>ClCCl>[OH:2][C:3]1[CH:4]=[C:5]([CH:20]=[CH:21][C:22]=1[OH:23])[CH2:6][CH2:7][N:8]([CH3:19])[C:9](=[O:18])/[CH:10]=[CH:11]/[C:12]1[CH:13]=[N:14][CH:15]=[CH:16][CH:17]=1

参加物

5

反応物 3

HCID 887MethanolHCID 9818748Tjn-331HCID 22277759Boron tribromide dichloromethane

生成物 1

HCID 20701369HCID 20701369、化合物収率 90%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

(E)-N-(3,4-dimethoxyphenethyl)-N-methyl-3-(3-pyridyl)-2-propenoic acid amide (2.65 g, 8.31 mmol) obtained in Example 84 was dissolved in dichloromethane (66 ml) and 1M boron tribromide-dichloromethane solution (33 ml) was dropwise added under argon at −30° C. and stirred for 14 hours. After methanol was added at the same temperature to stop the reaction, the solvent was distilled out under reduced pressure and hydrogen chloride/methanol solution was added to the residue and heated and refluxed for 1 hour. The solvent was distilled out under reduced pressure and potassium hydroxide/methanol solution was added to the residue to neutralize. The precipitated inorganic salts were filtered out and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform:methanol=30:1) and recrystallized to yield the titled compound (2.19 g, 90%).

後処理

  1. customthe reaction
  2. distillationthe solvent was distilled out under reduced pressure and hydrogen chloride/methanol solution
  3. additionwas added to the residue
  4. temperatureheated
  5. temperaturerefluxed for 1 hour
  6. distillationThe solvent was distilled out under reduced pressure and potassium hydroxide/methanol solution
  7. additionwas added to the residue
  8. filtrationThe precipitated inorganic salts were filtered out
  9. concentrationthe filtrate was concentrated under reduced pressure
  10. customThe residue was purified by silica gel column chromatography (chloroform:methanol=30:1)
  11. customrecrystallized

出典と根拠

ORDレコード
ord-6d34257497f44e0db112a5c6184c70ad
出典データセット
uspto-grants-2001_11
特許番号
US06313153B1

反応ノート

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