Dimethyl acetylenedicarboxylate → Dimethyl 3-thienylaminobutenedioate
反応式
[NH2:1][C:2]1[CH:6]=[CH:5][S:4][CH:3]=1.[CH3:7][O:8][C:9]([C:11]#[C:12][C:13]([O:15][CH3:16])=[O:14])=[O:10]>CO>[S:4]1[CH:5]=[CH:6][C:2]([NH:1][C:11](=[CH:12][C:13]([O:15][CH3:16])=[O:14])[C:9]([O:8][CH3:7])=[O:10])=[CH:3]1参加物
4
実験手順
3-Aminothiophene is redissolved in methanol (500 mL) cooled in an ice bath and dimethylacetylenedicarboxylate (80 g; 0.50 mol) is added dropwise. The mixture is stirred at room temperature for 15 hours and 30 minutes, the methanol removed under reduced pressure and 1,2-dichloroethane is added. This solvent is also evaporated off to give dimethyl 3-thienylaminobutenedioate as an oil.
後処理
- temperaturecooled in an ice bath
- customthe methanol removed under reduced pressure and 1,2-dichloroethane
- additionis added
- customThis solvent is also evaporated off
出典と根拠
- ORDレコード
- ord-c2f9da94f0164059b226ff8a22801101
- 出典データセット
- uspto-grants-1987_10
- 特許番号
- US04701208
反応ノート
読み込み中…