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

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

C - Chemistry, Metallurgy

07

C

260/465.1

C07C 315/04 (2006.01) C07C 317/36 (2006.01) C07C 317/18 (2006.01)

Patent

CA 1321600

ABSTRACT OF THE DISCLOSURE: HOE 87/F 370K A process for the preparation of aminoaryl-.beta.-sulfatoethyl- sulfone compounds Aminoaryl-.beta.-sulfatoethylsulfone compounds, such as, for example 4-(.beta.-sulfatoethylsulfonyl)-aniline, can be pre- pared in a quick and easy manner from their corresponding .beta.-hydroxyethylsulfone compounds by sulfation by spraying a solution or suspension or paste of this aminoaryl-.beta.- hydroxyethylsulfone 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 pro- cedure, the drying, esterification reaction and the hydro- lysis of any acylamino group present takes place synchro- nously. The sulfato compound is preferably obtained in the form of granules.

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