Cinchomeronic acid → 1H,3H-furo(3,4-c)pyridine-1,3-dione
反応式
[N:1]1[CH:6]=[CH:5][C:4]([C:7]([OH:9])=O)=[C:3]([C:10]([OH:12])=[O:11])[CH:2]=1>C(OC(=O)C)(=O)C>[N:1]1[CH:6]=[CH:5][C:4]2[C:7]([O:12][C:10](=[O:11])[C:3]=2[CH:2]=1)=[O:9]参加物
3
実験手順
A mixture of pyridine 3,4-dicarboxylic acid (15.0 g) and acetic anhydride (30 mL) is refluxed for two hours. The excess acetic anhydride is removed by distillation and the anhydride is collected and purified by sublimation (123° C. at 3 mm Hg) to yield pyridine 3,4-dicarboxylic acid anhydride as a white solid (10.1 g).
後処理
- temperatureis refluxed for two hours
- customThe excess acetic anhydride is removed by distillation
- customthe anhydride is collected
- custompurified by sublimation (123° C. at 3 mm Hg)
出典と根拠
- ORDレコード
- ord-4dc1f62024d04909a387aae886214db3
- 出典データセット
- uspto-grants-1997_01
- 特許番号
- US05596097
反応ノート
読み込み中…