Process for the preparation of 2-alkylamino-4-aminobenzenesulfon

Details Process for the preparation of 2-alkylamino-4-aminobenzenesulfon Process for the preparation of 2-alkylamino-4-aminobenzenesulfon

1990-09-20

1991-08-20

Dees, Jose G.

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

Organic compounds

Sulfonic acids or salts thereof

C07C14358

Patent

active

050416316

ABSTRACT:
A process for the preparation of 2-alkylamino-4-aminobenzenesulfonic acids by acylation of 2,4-diaminobenzenesulfonic acid followed by alkylation of the resulting 4-acylamino-2-aminobenzenesulfonic acid and, finally, removal of the acyl group by hydrolysis.

REFERENCES:
patent: 2575027 (1949-10-01), Schmidt
patent: 2687431 (1950-10-01), Marschall
patent: 2727062 (1955-12-01), Tulagin
patent: 3223727 (1965-12-01), Stryker
Organikum 17th Ed., p. 201, 1988.
Methoden der Organischen Chemie, vol. 11/1; pp. 207-212, H. Glaser et al., "Stickstoff-Verbindungen II", 1957.

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