Process for preparing substituted 1,4-quinone methides

US8212081B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Stefanie Rinker · Dorsten, DE
• Phillip R. James · Romsey, GB
• Manfred Neumann · Marl, DE
• Oliver Erpeldinger · Wülfrath, DE
• Frank Kraushaar · Essen, DE

Key dates

• Filing date: Apr 20, 2010
• Grant date: Jul 3, 2012
• Expiry date: Sep 16, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C50/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for preparing a substituted 1,4-quinone methide from a 3,5-disubstituted 4-hydroxybenzaldehyde is provided. Also provided is a method to prepare a 3,5-disubstituted 4-hydroxybenzaldehyde from the corresponding 2,6-disubstituted phenol.