Process for the preparation of aminoaryl-sulphonic acids

Details Process for the preparation of aminoaryl-sulphonic acids Process for the preparation of aminoaryl-sulphonic acids

1989-12-11

1990-11-06

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

562 61, 562 70, 562 72, 562 73, C07C14358, C07C14360

Patent

active

049688359

ABSTRACT:
Aminoaryl-sulphonic acids can be prepared by reaction of arylamines and sulphuric acid at elevated temperature and under pressure, where water formed and, where appropriate, water present as water of dilution, is left in the reaction mixture until the end of the reaction.

REFERENCES:
patent: 4435336 (1984-03-01), Emde et al.

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