Method for the simultaneous production of tetrahydrofurans and pyrrolidones

US7193091B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rolf Fischer · Heidelberg, DE
• Markus Rösch · Oppenheim, DE
• Nils Bottke · Ludwigshafen am Rhein, DE
• Alexander Weck · Freinsheim, DE
• Gunther Windecker · Ludwigshafen, DE
• Michael Hesse · Westlake Village, US
• Holger Borchert · Offstein, DE
• Stephan Schlitter · Schifferstadt, DE

Key dates

• Filing date: Feb 28, 2003
• Grant date: Mar 20, 2007
• Expiry date: Mar 28, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C4-dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones.