Sulfuric Acid → 2-Methylchromone
反応式
S(=O)(=O)(O)O.[C:6]([CH2:9][C:10]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)=[O:11])(=[O:8])[CH3:7]>O>[CH3:7][C:6]1[O:8][C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][C:12]=2[C:10](=[O:11])[CH:9]=1参加物
4
実験手順
Concentrated sulphuric acid (30 g) is added to acetyl acetophenone (15 g) obtained as above described. After cooling at room temperature, water is added until precipitation of a white powder, which is isolated by filtration under vacuum and washed with cold water. 2-methyl-4H-1-benzopyran-4-one (10 g) is obtained (m.p.=71° C.; yield=74%).
後処理
- customobtained
- customwhich is isolated by filtration under vacuum
- washwashed with cold water
出典と根拠
- ORDレコード
- ord-d52e18c19c6645ee8409ed28a72c7be2
- 出典データセット
- uspto-grants-2002_09
- 特許番号
- US06455578B1
反応ノート
読み込み中…