Hydrogen Bromide → HCID 178514854、化合物
反応式
Br.C[O:3][C:4]1[C:5](=[O:23])[C:6]2[C:14](=[CH:15][C:16]=1[O:17]C)[C:13]1[C:8](=[CH:9][C:10]([O:21]C)=[C:11]([O:19]C)[CH:12]=1)[CH:7]=2>C(O)(=O)C>[OH:3][C:4]1[C:5](=[O:23])[C:6]2[C:14](=[CH:15][C:16]=1[OH:17])[C:13]1[C:8](=[CH:9][C:10]([OH:21])=[C:11]([OH:19])[CH:12]=1)[CH:7]=2参加物
4
実験手順
To a mixed solution of acetic acid (20 ml) and 47% hydrobromic acid (10 ml), 2,3,6,7-tetramethoxyfluorenone (8.0 g) was added and the mixture was refluxed for 15 hours. After cooling, the precipitated crystals were filtered, washed with water and then recrystallized from water-containing ethanol to give 5.0 g of 2,3,6,7-tetrahydroxyfluorenone as a claret powder.
後処理
- temperaturethe mixture was refluxed for 15 hours
- temperatureAfter cooling
- filtrationthe precipitated crystals were filtered
- washwashed with water
- customrecrystallized from water-
- additioncontaining ethanol
出典と根拠
- ORDレコード
- ord-7588242036fc4364854fefaa810271f3
- 出典データセット
- uspto-grants-1999_08
- 特許番号
- US05942641
反応ノート
読み込み中…