Process for the preparation of aminoaryl .beta.-sulfatoethyl sul

Details Process for the preparation of aminoaryl .beta.-sulfatoethyl sul Process for the preparation of aminoaryl .beta.-sulfatoethyl sul

1994-09-06

1995-10-31

Richter, Johann

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

Organic compounds

Sulfate esters

558 25, C07C30518

Patent

active

054631009

ABSTRACT:
Aminoaryl .beta.-sulfatoethyl sulfone compounds, such as, for example 4-(.beta.-sulfatoethylsulfonyl)-aniline, can be prepared in a quick and easy manner from their corresponding .beta.-hydroxyethyl sulfone compounds by sulfation by spraying a solution or suspension or paste of this aminoaryl .beta.-hydroxyethyl sulfone compound or the acylamino compound thereof in sulfuric acid or aqueous sulfuric acid into a hot inert gas stream of a convection dryer. In this procedure, the drying, esterification reaction and the hydrolysis of any acylamino group present takes place synchronously. The sulfato compound is preferably obtained in the form of granules.

REFERENCES:
patent: 3135779 (1964-06-01), Hoyer et al.
patent: 4334076 (1982-06-01), Steuernagel et al.
patent: 4346046 (1982-08-01), Nishimura et al.
patent: 4482501 (1984-11-01), Nishimura et al.
Weissberger, Separation and Purification, Part I, pp. 821-822, (1956).

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