1-Bromo-3-chloropropane → 1-(3-Chloropropyl)indolin-2-one
反応式
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH2:3][C:2]1=[O:10].Br[CH2:12][CH2:13][CH2:14][Cl:15].C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[Cl:15][CH2:14][CH2:13][CH2:12][N:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH2:3][C:2]1=[O:10]参加物
5
実験手順
Reflux together oxindole (2.66 g, 20.0 mmol), 1-bromo-3-chloropropane (2.56 mL, 26.0 mmol) and potassium carbonate (5.52 g, 40.0 mmol) in acetonitrile (300 mL) under nitrogen for 16 h. Cool the suspension to room temperature and filter off the precipitate. Concentrate the filtrate in vacuo and purify the crude mixture by chromatography on silica gel eluting with isohexane/EtOAc (1:0 to 3:2 gradient over 40 min) to give the title compound as an orange oil (1.65 g, 39%). MS (ES+) m/z: 210 (M+H)+.
後処理
- filtrationfilter off the precipitate
- concentrationConcentrate the filtrate in vacuo
- custompurify the crude mixture by chromatography on silica gel eluting with isohexane/EtOAc (1:0 to 3:2 gradient over 40 min)
出典と根拠
- ORDレコード
- ord-3de14430f73942abbb0af95598742218
- 出典データセット
- uspto-grants-2011_09
- 特許番号
- US08022062B2
反応ノート
読み込み中…