Process for the preparation of aromatic methyl methoxycarboxylates

US5424479A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Rolf Muller · Karben, DE
• Thomas Wessel · Frankfurt, DE

Key dates

• Filing date: Aug 23, 1994
• Grant date: Jun 13, 1995
• Expiry date: Aug 23, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C65/11
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a preparation process for aromatic methyl methoxycarboxylates by reaction of aromatic hydroxycarboxylic acids in the form of a mixture with the methoxycarboxylic acids with dimethyl sulphate in water.