Sulfuric Acid → 4-Amino-1,3-benzenedisulfonic acid
反応式
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[S:8](=[O:12])(=[O:11])([OH:10])O>ClC1C=CC=CC=1Cl>[NH2:1][C:2]1[C:7]([S:8]([OH:12])(=[O:11])=[O:10])=[CH:6][C:5]([S:8]([OH:10])(=[O:12])=[O:11])=[CH:4][CH:3]=1参加物
4
実験手順
186.2 g (2 mols) of aniline are initially introduced into 500 ml of 1,2-dichlorobenzene and 208.3 g (2.04 mols) of 96% strength sulphuric acid are added dropwise. The mixture is heated for 8 hours at the boil under a water separator, during which period distillate passes over at a rate of 700 ml per hour, cooled and filtered with suction. After it has been dried, the precipitate weighs 338.5 g and contains 86.1% of p-sulphanilic acid (84.2% of the theoretical yield) and 11.2% of aniline-2,4-disulphonic acid (7.5%, relative to aniline).
後処理
- additionare added dropwise
- temperatureThe mixture is heated for 8 hours at the boil under a water separator
- temperatureduring which period distillate passes over at a rate of 700 ml per hour, cooled
- filtrationfiltered with suction
- customAfter it has been dried
出典と根拠
- ORDレコード
- ord-742a82d786254592a9c68381ff0db8a4
- 出典データセット
- uspto-grants-1984_03
- 特許番号
- US04435336
反応ノート
読み込み中…