Method of producing alkoxycinnamic acid ester

US6680404B1 · kind B1 · utility

Assignee

• Symrise GmbH & Co. KG · DE

Inventors

• Walter Kuhn · Holzminden, DE
• Werner Marks · Bodenwerder, DE
• Klaus Zahlmann · Holzminden, DE

Key dates

• Filing date: Nov 16, 2001
• Grant date: Jan 20, 2004
• Expiry date: Nov 16, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/343
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method of producing alkoxycinnamic acid ester (alkoxy cinnamate) by condensing C5-C8 acetic acid esters with C1-C4 alkoxybenzaldehyde in the presence of an alkaline and/or alkaline earth C1-C4 alcohalate and removing the C1-C4 alcohol that is produced by this reaction from the reaction mixture.