Process for the preparation of benzoyl chloride

US4430181A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rainer Neumann · Krefeld, DE
• Karl Morgenstern · Krefeld, DE
• Karl-August Lipper · Krefeld, DE
• Friedrich Bruhne · Krefeld, DE
• Walter Bockmann · Krefeld, DE
• Clemens Casper · Krefeld, DE
• Siegfried Zingel · Krefeld, DE

Key dates

• Filing date: Oct 22, 1982
• Grant date: Feb 7, 1984
• Expiry date: Oct 22, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Benzoyl chloride is prepared by a process in which the high-boiling residue obtained in the catalytic oxidation of toluene with oxygen or oxygen-containing gases in the liquid phase is largely freed of heavy metal salts which are present, and is then chlorinated at elevated temperatures, optionally under the action of light, and the benzoyl chloride is then separated off.