Sulfuric Acid → 4-Amino-1,3-benzenedisulfonic acid

HRID 1073355

反応式

HRID 1073355 の反応式
[S:1](=[O:5])(=[O:4])([OH:3])O.[NH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[NH2:6][C:7]1[C:12]([S:1]([OH:5])(=[O:4])=[O:3])=[CH:11][C:10]([S:1]([OH:3])(=[O:5])=[O:4])=[CH:9][CH:8]=1

参加物

3

反応物 2

HCID 1118Sulfuric AcidHCID 6115Aniline

生成物 1

HCID 673044-Amino-1,3-benzenedisulfonic acid

反応条件

温度
200 °C

実験手順

225.5 g (2.3 mol) of 100% strength sulphuric acid were added to 257.0 g (2.76 mol) of aniline in 460 ml of ortho oil. The suspension obtained was heated at 200° C. for 2.5 hours in a 1.3 1 enamel autoclave. After cooling, the mixture was filtered off with suction and the filter residue was dried. The 475.6 g of solid contained 80.7% of p-sulphanilic acid in addition to unchanged anilinium hydrogensulphate, based on the excess sulphuric acid employed. Aniline-2,4-disulphonic acid was not formed.

後処理

  1. customThe suspension obtained
  2. temperatureAfter cooling
  3. filtrationthe mixture was filtered off with suction
  4. customthe filter residue was dried
  5. additionin addition to unchanged anilinium hydrogensulphate

出典と根拠

ORDレコード
ord-ca6a5238a0aa4cb68d5a645a169b8984
出典データセット
uspto-grants-1990_11
特許番号
US04968835

関連ノート

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