Dichloromethane → 2-Chloro-3,4-dihydroxybenzaldehyde
反応式
[Cl:1][C:2]1[C:9]([OH:10])=[C:8]([O:11]C)[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5].C(Cl)Cl.B(Br)(Br)Br>CO>[Cl:1][C:2]1[C:9]([OH:10])=[C:8]([OH:11])[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5]参加物
5
実験手順
To a stirred solution of 25 g. (0.134 m.) of 2-chloroisovanillin in 80 ml. of methylene chloride at 0°C. is added dropwise 19 ml. (0.2 m.) of boron tribromide and the mixture is stirred at 25°C. for 3 hours. Methanol (100 ml.) is added and the solution is concentrated to give 2-chloroprotocatechualdehyde, m.p. 193°-195°C.
後処理
- concentrationthe solution is concentrated
出典と根拠
- ORDレコード
- ord-bf9933328a3f48abadf48c4b2bc089d5
- 出典データセット
- uspto-grants-1976_08
- 特許番号
- US03976695
反応ノート
読み込み中…