Preparation of 3-acyloxy-2-methylbenzoic acids

US6891060B2 · kind B2 · utility

Assignee

• BayerAktiengesellschaft · DE

Inventors

• Johannes Scherer · Leverkusen, DE
• Horst Behre · Odenthal, DE
• Friedrich Muller-Hauck · Bendorf, DE

Key dates

• Filing date: Jun 10, 2003
• Grant date: May 10, 2005
• Expiry date: Aug 19, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/287
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an improved process for preparing 3-acyloxy-2-methylbenzoic acids by heating substituted naphthalenes in the presence of alkali metal hydroxides and subsequently acylating.