Production of tertiary methylphosphine oxides

US4020110A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Bernd Lippsmeier
• Klaus Hestermann · Lechenich, DE
• Martin Reuter · Dachau, DE

Key dates

• Filing date: Mar 20, 1975
• Grant date: Apr 26, 1977
• Expiry date: Mar 20, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/5004
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Production of tertiary methylphosphine oxides of the general formula ##STR1## in which R and R' each stand for identical or different, branched or unbranched, substituted or unsubstituted alkyl, cycloalkyl, aralkyl or aryl groups having from 1 to 18 carbon atoms. The compounds are produced by subjecting tertiary hydroxymethylphosphines of the general formula ##STR2## in which R and R' have the meanings given above, to a thermal rearrangement reaction at temperatures higher than about 90.degree. C or, in the presence of a catalyst, at temperatures within the range -10 and +250.degree. C.