Cinchomeronic acid → 1H,3H-furo(3,4-c)pyridine-1,3-dione
반응식
[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]참가 물질
3
실험 절차
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).
후처리
- 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)
출처 및 근거
- ORD 기록
- ord-4dc1f62024d04909a387aae886214db3
- 출처 데이터셋
- uspto-grants-1997_01
- 특허 번호
- US05596097
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