Water-soluble sulfonated diphosphines

US5274183A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Wolfgang Herrman · Freising, DE
• Christian Kohlpaintner · Kelkheim, DE
• Helmut Bahrmann · Hamminkeln, DE

Key dates

• Filing date: Sep 23, 1992
• Grant date: Dec 28, 1993
• Expiry date: Sep 23, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/5054
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The preparation of water-soluble diphosphines derived from biaryl compounds by reaction with a solution of SO.sub.3 in sulfuric acid.