反応式
[O:1]1[C:9]2[CH2:8][CH2:7][N:6]([C:10](=[O:22])[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:5][C:4]=2[CH:3]=[CH:2]1.[CH2:23]([NH:25][CH2:26][CH3:27])[CH3:24].[CH2:28]=O>C(O)(=O)C>[CH2:23]([N:25]([CH2:28][C:2]1[O:1][C:9]2[CH2:8][CH2:7][N:6]([C:10](=[O:22])[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=3)[CH2:5][C:4]=2[CH:3]=1)[CH2:26][CH3:27])[CH3:24]参加物
5
反応条件
- 温度
- 100 °C
実験手順
To a solution of 0.347 g (1.167 mmol) of 1-(6,7-dihydro-4H-furo[3,2-c]pyridin-5-yl)-6-phenylhexan-1-one in 20 ml of acetic acid, 0.14 ml (1.4 mmol) of diethylamine and 0.11 g (1.4 mmol) of 37% aqueous formaldehyde were added, followed by stirring at 100° C. for 1.5 hours. After the solvent was distilled off under reduced pressure, the residual solution was alkalified with aqueous sodium hydroxide and extracted with dichloromethane 3 times. The combined organic layer was dried over anhydrous magnesium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=4/1) to yield the desired product.
後処理
- distillationAfter the solvent was distilled off under reduced pressure
- extractionextracted with dichloromethane 3 times
- dry with materialThe combined organic layer was dried over anhydrous magnesium sulfate
- distillationthe solvent was distilled off under reduced pressure
- customThe resulting crude product was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=4/1)
出典と根拠
- ORDレコード
- ord-31c751a3a023403987b928739f55f562
- 出典データセット
- uspto-grants-1999_12
- 特許番号
- US05998433
関連ノート
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