Process for the preparation of 2,4,4,7-tetramethyl-oct-6-en-3-one and its use as an aroma substance

US6252120A · kind A · utility

Assignee

• Haarmann & Reimer Corporation · DE

Inventors

• Erich Dilk · Holzminden, DE
• Peter Worner · Holzminden, DE

Key dates

• Filing date: Oct 9, 1996
• Grant date: Jun 26, 2001
• Expiry date: Oct 9, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C49/203
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

2,4,4,7-Tetramethyl-oct-6-en-3-one, as a perfume component, imparts new smell facets to perfume compositions. It can be prepared in a good yield by prenylation of 1-chloro-3-methyl-2-butene in a 2-phase process.