Production of cyclic carbonates

US5153333A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Frank Schubert · Neukirchen-Vluyn, DE
• Rolf Herzog · Winterthur, CH
• Bert Meier · Wesel, DE
• Jurgen Zehrfeld · Voerde, DE

Key dates

• Filing date: Sep 17, 1991
• Grant date: Oct 6, 1992
• Expiry date: Sep 17, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D317/36
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of 2-oxo-1, 3-dioxolanes comprises reacting an epoxy compound having at least one functional epoxy group in the optional presence of an inert solvent with carbon dioxide at 60.degree. C. to 200.degree. C. at normal pressure in the presence of a quaternary phosphonium compound as catalyst and novel quaternary phosphonium compounds useful as catalysts in the said process.