Water → Diethyl 2-acetamido-2-{2-[4-(1-oxo-5-phenylpentyl)phenyl]ethyl}malonate

HRID 1795707ノート

反応式

HRID 1795707 の反応式
[C:1]([NH:4][CH:5]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[C:6]([O:8][CH2:9][CH3:10])=[O:7])(=[O:3])[CH3:2].[O-]CC.[Na+].I[CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29](=[O:40])[CH2:30][CH2:31][CH2:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)=[CH:25][CH:24]=1.O>C(O)C.O1CCCC1>[C:1]([NH:4][C:5]([CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29](=[O:40])[CH2:30][CH2:31][CH2:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)=[CH:25][CH:24]=1)([C:11]([O:13][CH2:14][CH3:15])=[O:12])[C:6]([O:8][CH2:9][CH3:10])=[O:7])(=[O:3])[CH3:2]

参加物

7

反応物 4

HCID 962WaterHCID 14041Acetamidomalonic acid diethyl esterHCID 2723922Sodium ethoxideHCID 221784841-[4-(2-Iodoethyl)phenyl]-5-phenylpentan-1-one

生成物 1

HCID 22178485Diethyl 2-acetamido-2-{2-[4-(1-oxo-5-phenylpentyl)phenyl]ethyl}malonate収率 61.1%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

A solution of diethyl 2-acetamidomalonate (30.6 g), sodium ethoxide (7.6 g) and molecular sieves 3A (5.5 g) in ethanol (80 ml) was stirred at room temperature for 20 hours. A solution of 1-[4-(2-iodoethyl)phenyl]-5-phenylpentan-1-one (18.4 g) in tetrahydrofuran (60 ml) was added thereto over 10 minutes and the mixture was refluxed under heating for 15 hours. The reaction mixture was poured into water (200 ml) and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and the solvent was distilled away under reduced pressure to give a brown oily substance (40 g). The obtained brown oily substance was purified by silica gel column chromatography (eluent; hexane:ethyl acetate=2:1) to give diethyl 2-acetamido-2-{2-[4-(1-oxo-5-phenylpentyl)phenyl]ethyl}malonate (13.8 g) as a pale yellow oily substance.

後処理

  1. temperaturethe mixture was refluxed
  2. temperatureunder heating for 15 hours
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. distillationthe solvent was distilled away under reduced pressure
  7. customto give a brown oily substance (40 g)
  8. customThe obtained brown oily substance was purified by silica gel column chromatography (eluent; hexane:ethyl acetate=2:1)

出典と根拠

ORDレコード
ord-837d67f5e7734d9b857c520c73ce0d45
出典データセット
uspto-grants-2006_04
特許番号
USRE039072E1

反応ノート

読み込み中…