Process for stabilizing cyclobutanone derivatives

US7504541B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Kerstin Bodmann · Marl, DE
• Manuela Imig · Alzenau, DE
• Marianne Omeis · Dorsten, DE

Key dates

• Filing date: Feb 27, 2008
• Grant date: Mar 17, 2009
• Expiry date: Feb 27, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C49/39
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for stabilizing cyclobutanone derivatives, comprising adding at least one of an alkali metal carbonate, alkali metal oxide, alkaline earth metal carbonate, and alkaline earth metal oxide as a stabilizer to at least one cyclobutanone derivative of the structurewhere R1, R2, R3, R4, R5 and R6 are each independently hydrogen or an alkyl, aralkyl, cycloalkyl, aryl, alkylaryl, hydroxyl, alkoxy, halogen, cyano or carboxyl group; and the correspondingly stabilized cyclobutanone derivatives.