HCID 135696401、化合物 → HCID 135665331、化合物
反応式
[N:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[NH:3][C:2]=1[C:10]1[CH:15]=[C:14]([N+:16]([O-:18])=[O:17])[C:13]([OH:19])=[C:12]([O:20]C)[CH:11]=1>C(O)(=O)C.Br>[N:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[NH:3][C:2]=1[C:10]1[CH:11]=[C:12]([OH:20])[C:13]([OH:19])=[C:14]([N+:16]([O-:18])=[O:17])[CH:15]=1参加物
4
実験手順
A suspension of 860.1 mg of 4-(2-benzimidazolyl)-2-methoxy-6-nitrophenol in 10 ml of glacial acetic acid and 10 ml of 48 percent hydrobromic acid is heated to boiling under reflux for 72 hours. The mixture is then evaporated and the residue is treated four times with 50 ml of toluene each time, which is again distilled each time. There is obtained 5-(2-benzimidazolyl)-3-nitropyrocatechol of m.p. >300° (from acetone/water).
後処理
- temperatureis heated
- temperatureunder reflux for 72 hours
- customThe mixture is then evaporated
- additionthe residue is treated four times with 50 ml of toluene each time, which
- distillationis again distilled each time
出典と根拠
- ORDレコード
- ord-18b1afdd15b74c7fba38994bdfd9cc12
- 出典データセット
- uspto-grants-1995_02
- 特許番号
- US05389653
反応ノート
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