Single-stage method for producing toluene derivatives

US6992226B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rolf Fischer · Heidelberg, DE
• Markus Rösch · Oppenheim, DE
• Norbert Gotz · Worms, DE

Key dates

• Filing date: Apr 24, 2002
• Grant date: Jan 31, 2006
• Expiry date: Apr 24, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B31/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing toluene derivatives of the formula I where R1, R2 and R3 are, independently of one another, hydrogen, alkyl radicals, hydroxyl groups and/or alkoxy groups, comprises reacting the corresponding benzoic acids, benzoic esters or benzoic anhydrides with hydrogen in the presence of a catalyst.