Nitroanilinesulfonic acids and the preparation of phenylenediami

Details Nitroanilinesulfonic acids and the preparation of phenylenediami Nitroanilinesulfonic acids and the preparation of phenylenediami

1992-08-13

1993-11-09

Chan, Nicky

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

Organic compounds

Sulfonic acids or salts thereof

C07C30929

Patent

active

052604314

ABSTRACT:
Nitroanilinesulfonic acids of the formula ##STR1## where R is C.sub.1 -C.sub.4 -alkyl are prepared by sulfonation of 3-nitro-N-alkylanilines using oleum, and are reduced to 3-(N-alkylamino)aniline-4-sulfonic acids.

REFERENCES:
Analytische Methoden, pp. 360-365, vol. 11/1, H. Roth, "Analytik von Funktionellen Atomgruppen und Verbindungsklassen".

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