Triethylamine → Ethyl p-chlorobenzalpyruvate
反応式
[Cl:1][C:2]1[CH:14]=[CH:13][C:5]([CH:6]=[CH:7][C:8](=[O:12])[C:9]([OH:11])=[O:10])=[CH:4][CH:3]=1.[CH2:15](N(CC)CC)[CH3:16]>C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:6]=[CH:7][C:8](=[O:12])[C:9]([O:11][CH2:15][CH3:16])=[O:10])=[CH:13][CH:14]=1参加物
4
実験手順
To the p-chlorobenzalpyruvic acid from step A in wet ethyl acetate was added triethylamine (11.1 g, 0.11 moL) at a rate less than 0.5 mL/min followed by azeotropic removal of water. Ethyl chloroformate (11.9 g, 0.11 moL) was then added at room temperature over a one hour period and the batch aged one hour to effect complete reaction. Workup followed, as in Example 1, to afford ethyl p-chlorobenzalpyruvate in 99% yield.
後処理
- customfollowed by azeotropic removal of water
- additionEthyl chloroformate (11.9 g, 0.11 moL) was then added at room temperature over a one hour period
- customreaction
出典と根拠
- ORDレコード
- ord-175cd20443e9451c9c4ef28cd610ad24
- 出典データセット
- uspto-grants-1990_09
- 特許番号
- US04956490
反応ノート
読み込み中…