Dimethylformamide → 5-Benzyloxy-3-methoxyxanthone
反応式
[CH2:1]([O:8][C:9]1[CH:22]=[CH:21][CH:20]=[C:19]2[C:10]=1[O:11][C:12]1[CH:13]=[C:14](Cl)[CH:15]=[CH:16][C:17]=1[C:18]2=[O:23])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].CN(C)[CH:29]=[O:30]>O>[CH2:1]([O:8][C:9]1[CH:22]=[CH:21][CH:20]=[C:19]2[C:10]=1[O:11][C:12]1[CH:13]=[C:14]([O:30][CH3:29])[CH:15]=[CH:16][C:17]=1[C:18]2=[O:23])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1参加物
5
実験手順
A mixture of 5-benzyloxy-3-chloroxanthone (8.5 g.), sodium hydride (3 g.), methaol (20 ml.) and dimethylformamide (100 ml.) is stirred at room temperature for 24 hours. The mixture is poured into water and the precipitate is filtered. The residue is recrystallised from isopropanol to give 5-benzyloxy-3-methoxyxanthone, m.p. 158° C.
後処理
- filtrationthe precipitate is filtered
- customThe residue is recrystallised from isopropanol
出典と根拠
- ORDレコード
- ord-794c8866182b47af8f365a9222060da1
- 出典データセット
- uspto-grants-1981_05
- 特許番号
- US04268514
反応ノート
読み込み中…