Sulfuric Acid → Sulfanilic acid

HRID 543591Notes

Reaction equation

HRID 543591 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH:8][S:9](O)(=[O:11])=[O:10]>S1(CCCC1)(=O)=O>[S:9]([OH:11])(=[O:10])([C:5]1[CH:6]=[CH:7][C:2]([NH2:1])=[CH:3][CH:4]=1)=[O:8]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 6115Aniline

Product 1

HCID 8479Sulfanilic acid

Reagents, catalysts & solvents 1

HCID 31347SulfolaneSolvent

Procedure

247.7 g (2.525 mols) of aniline are reacted in 500 ml of sulpholane with 245.3 g (2.50 mols) of 100% strength H2SO4, as described in Example 1. A yield of p-sulphanilic acid of 95.9% is obtained.

Sources & evidence

ORD record
ord-f6f04eab47ae43818eb066de7acabdb1
Source dataset
uspto-grants-1984_05
Patent number
US04447368

Reaction notes

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