反応式
[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][C:9]#[N:10].[CH3:11]I.[H-].[Na+]>CN(C)C=O>[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]([CH3:11])[C:9]#[N:10]参加物
実験手順
18.9 g (96.41 mmol) of (2-bromophenyl)-acetonitrile and 31.41 g (221.74 mmol) of methyl iodide are dissolved in 150 ml of N,N-dimethylformamide. At 0° C., 8.87 g (221.74 mmol) of sodium hydride (as 60% suspension in oil) is added in portions, and the batch is stirred overnight at room temperature. The reaction mixture is poured into ice water and worked up as usual. Since the compound that is isolated after chromatography (20.9 g) still contains 2-(2-bromophenyl)-propionitrile in addition to the desired product, the entire amount is reacted another time with the same amounts of reagent. This reaction also yields only material that still contains mono-methyl compound. After another alkylation with 15 g of methyl iodide and 4.45 g of sodium hydride in 150 ml of N,N-dimethylformamide, 18.57 g of the desired compound is isolated.
出典と根拠
- ORDレコード
- ord-72074b593b8447779b110b9e02c36afc
- 出典データセット
- uspto-grants-2010_02
- 特許番号
- US07659297B2
関連ノート
読み込み中…