Process for the preparation of sulfonated aryl phosphine

US4483802A · kind A · utility

Assignee

• Ruhrchemie Aktiengesellschaft · DE

Inventors

• Roderich Gartner · Dinslaken, DE
• Boy Cornils · Dinslaken, DE
• Helmut Springer · Dinslaken, DE
• Peter Lappe · Dinslaken, DE

Key dates

• Filing date: Sep 20, 1983
• Grant date: Nov 20, 1984
• Expiry date: Sep 20, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/5095
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of mono, di or trisulfonated aryl phosphines whereby triaryl phosphine is sulfonated with oleum at 0.degree. to 40.degree. C. After dilution of the reaction product with water, the sulfonated triaryl phosphine is extracted with an amine dissolved in an organic solvent; both the amine and organic solvent being insoluble in water. From the organic phase the sulfonated phosphine is transferred to the aqueous phase by treatment with an aqueous solution of a base.